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Relion 615 series

Voltage Protection and ControlREU615

Application Manual


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Document ID: 1MRS757054

Issued: 2010-09-24

Revision: C

Product version: 3.0

Copyright 2010 ABB. All rights reserved


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CopyrightThis document and parts thereof must not be reproduced or copied without written

permission from ABB, and the contents thereof must not be imparted to a thirdparty, nor used for any unauthorized purpose.

The software or hardware described in this document is furnished under a license

and may be used, copied, or disclosed only in accordance with the terms of such

license.

TrademarksABB and Relion are registered trademarks of ABB Group. All other brand or

product names mentioned in this document may be trademarks or registered

trademarks of their respective holders.

WarrantyPlease inquire about the terms of warranty from your nearest ABB representative.

ABB Oy

Distribution Automation

P.O. Box 699

FI-65101 Vaasa, Finland

Telephone: +358 10 2211

Facsimile: +358 10 22 41094

http://www.abb.com/substationautomation
http://http//WWW.ABB.COM/SUBSTATIONAUTOMATION


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DisclaimerThe data, examples and diagrams in this manual are included solely for the concept

or product description and are not to be deemed as a statement of guaranteedproperties. All persons responsible for applying the equipment addressed in this

manual must satisfy themselves that each intended application is suitable and

acceptable, including that any applicable safety or other operational requirements

are complied with. In particular, any risks in applications where a system failure and/

or product failure would create a risk for harm to property or persons (including but

not limited to personal injuries or death) shall be the sole responsibility of the

person or entity applying the equipment, and those so responsible are hereby

requested to ensure that all measures are taken to exclude or mitigate such risks.

This document has been carefully checked by ABB but deviations cannot be

completely ruled out. In case any errors are detected, the reader is kindly requested

to notify the manufacturer. Other than under explicit contractual commitments, in

no event shall ABB be responsible or liable for any loss or damage resulting from

the use of this manual or the application of the equipment.


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ConformityThis product complies with the directive of the Council of the European

Communities on the approximation of the laws of the Member States relating toelectromagnetic compatibility (EMC Directive 2004/108/EC) and concerning

electrical equipment for use within specified voltage limits (Low-voltage directive

2006/95/EC). This conformity is the result of tests conducted by ABB in

accordance with the product standards EN 50263 and EN 60255-26 for the EMC

directive, and with the product standards EN 60255-1 and EN 60255-27 for the low

voltage directive. The IED is designed in accordance with the international

standards of the IEC 60255 series.


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Table of contentsSection 1 Introduction.......................................................................3

This manual........................................................................................3

Intended audience..............................................................................3

Product documentation.......................................................................4

Product documentation set............................................................4

Document revision history.............................................................5

Related documentation..................................................................6

Symbols and conventions...................................................................6

Safety indication symbols..............................................................6

Manual conventions.......................................................................7

Functions, codes and symbols......................................................7

Section 2 REU615 overview...........................................................11Overview...........................................................................................11

Product version history................................................................11

PCM600 and IED connectivity package version..........................11

Operation functionality......................................................................12

Optional functions........................................................................12

Physical hardware............................................................................12

Local HMI.........................................................................................14Display.........................................................................................14

LEDs............................................................................................15

Keypad........................................................................................15

Web HMI...........................................................................................16

Authorization.....................................................................................17

Communication.................................................................................18

Section 3 REU615 standard configurations...................................21Standard configurations....................................................................21

Connection diagrams........................................................................24Presentation of standard configurations...........................................27

Standard configuration A..................................................................28

Applications.................................................................................28

Functions.....................................................................................29

Default I/O connections..........................................................30

Default disturbance recorder settings.....................................31

Functional diagrams....................................................................32

Functional diagrams for protection.........................................32

Functional diagram for disturbance recorder..........................38

Functional diagrams for control and interlocking....................40

Table of contents

REU615 1Application Manual


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Standard configuration B..................................................................43

Applications.................................................................................43

Functions.....................................................................................44

Default I/O connections..........................................................45Default disturbance recorder settings.....................................47

Functional diagrams....................................................................47

Functional diagrams for protection.........................................48

Functional diagrams for disturbance recorder and

supervision functions..............................................................51

Functional diagrams for control and interlocking ...................53

Section 4 Requirements for measurement transformers................59Current transformers........................................................................59

Current transformer requirements for non-directional

overcurrent protection..................................................................59

Current transformer accuracy class and accuracy limit

factor......................................................................................59

Non-directional overcurrent protection...................................60

Example for non-directional overcurrent protection................61

Section 5 IED physical connections...............................................63Inputs................................................................................................63

Energizing inputs.........................................................................63

Phase currents.......................................................................63

Residual current.....................................................................63Phase voltages.......................................................................63

Residual voltage.....................................................................64

RTD/mA inputs............................................................................64

Auxiliary supply voltage input......................................................65

Binary inputs................................................................................65

Outputs.............................................................................................67

Outputs for tripping and controlling..............................................67

Outputs for signalling...................................................................67

IRF...............................................................................................68

Section 6 Glossary.........................................................................69

Table of contents

2 REU615Application Manual


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Section 1 Introduction

1.1 This manualThe application manual contains application descriptions and setting guidelines

sorted per function. The manual can be used to find out when and for what purpose

a typical protection function can be used. The manual can also be used when

calculating settings.

1.2 Intended audienceThis manual addresses the protection and control engineer responsible for

planning, pre-engineering and engineering.

The protection and control engineer must be experienced in electrical power

engineering and have knowledge of related technology, such as communication

and protocols.

1MRS757054 C Section 1Introduction



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1.3 Product documentation1.3.1 Product documentation set

Planning&purchase

Engineering

Installing

Commissioning

Operation

Maintenance

Decommissioning

deinstalling&disposal

Application manual

Operation manual

Installation manual

Service manual

Engineering manual

Commissioning manual

Communication protocolmanual

Technical manual

Planning&purchase

Engineering

Installing

Commissioning

Operation

Maintenance

Decommissioning


Planning&purchase

Engineering

Installing

Commissioning

Operation

Maintenance

Decommissioning


Application manualApplication manual

Operation manualOperation manual

Installation manualInstallation manual

Service manualService manual

Engineering manualEngineering manual

Commissioning manualCommissioning manual

Communication protocolmanualCommunication protocolmanual

Technical manualTechnical manual

en07000220.vsd

IEC07000220 V1 EN

Figure 1: The intended use of manuals in different lifecycles

The engineering manual contains instructions on how to engineer the IEDs using

the different tools in PCM600. The manual provides instructions on how to set up a

PCM600 project and insert IEDs to the project structure. The manual also

recommends a sequence for engineering of protection and control functions, LHMI

functions as well as communication engineering for IEC 61850 and othersupported protocols.

The installation manual contains instructions on how to install the IED. The

manual provides procedures for mechanical and electrical installation. The chapters

are organized in chronological order in which the IED should be installed.

The commissioning manual contains instructions on how to commission the IED.

The manual can also be used by system engineers and maintenance personnel for

assistance during the testing phase. The manual provides procedures for checking

of external circuitry and energizing the IED, parameter setting and configuration as

Section 1 1MRS757054 CIntroduction



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well as verifying settings by secondary injection. The manual describes the process

of testing an IED in a substation which is not in service. The chapters are organized

in chronological order in which the IED should be commissioned.

The operation manual contains instructions on how to operate the IED once it hasbeen commissioned. The manual provides instructions for monitoring, controlling

and setting the IED. The manual also describes how to identify disturbances and

how to view calculated and measured power grid data to determine the cause of a

fault.

The service manual contains instructions on how to service and maintain the IED.

The manual also provides procedures for de-energizing, de-commissioning and

disposal of the IED.

The application manual contains application descriptions and setting guidelines

sorted per function. The manual can be used to find out when and for what purpose

a typical protection function can be used. The manual can also be used when

calculating settings.

The technical manual contains application and functionality descriptions and lists

function blocks, logic diagrams, input and output signals, setting parameters and

technical data sorted per function. The manual can be used as a technical reference

during the engineering phase, installation and commissioning phase, and during

normal service.

The communication protocol manual describes a communication protocol

supported by the IED. The manual concentrates on vendor-specific implementations.

The point list manual describes the outlook and properties of the data points

specific to the IED. The manual should be used in conjunction with the

corresponding communication protocol manual.

Some of the manuals are not available yet.

1.3.2 Document revision historyDocument revision/date Product version HistoryA/2010-06-11 3.0 First release

B/2010-06-29 3.0 Terminology corrected

C/2010-09-24 3.0 Content corrected

Download the latest documents from the ABB web site http://

www.abb.com/substationautomation.


http://http//WWW.ABB.COM/SUBSTATIONAUTOMATIONhttp://http//WWW.ABB.COM/SUBSTATIONAUTOMATIONhttp://http//WWW.ABB.COM/SUBSTATIONAUTOMATION


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1.3.3 Related documentationName of the document Document IDModbus Communication Protocol Manual 1MRS756468

DNP3 Communication Protocol Manual 1MRS756709

IEC 60870-5-103 Communication Protocol Manual 1MRS756710

IEC 61850 Engineering Guide 1MRS756475

Engineering Manual 1MRS757121

Installation Manual 1MRS756375

Operation Manual 1MRS756708

Technical Manual 1MRS756887

1.4 Symbols and conventions1.4.1 Safety indication symbols

The electrical warning icon indicates the presence of a hazard

which could result in electrical shock.

The warning icon indicates the presence of a hazard which could

result in personal injury.

The caution icon indicates important information or warning related

to the concept discussed in the text. It might indicate the presence

of a hazard which could result in corruption of software or damage

to equipment or property.

The information icon alerts the reader to important facts and

conditions.

The tip icon indicates advice on, for example, how to design your

project or how to use a certain function.

Although warning hazards are related to personal injury, it should be understood

that operation of damaged equipment could, under certain operational conditions,

result in degraded process performance leading to personal injury or death.

Therefore, comply fully with all warning and caution notices.




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1.4.2 Manual conventionsConventions used in IED manuals. A particular convention may not be used in this

manual.

Abbreviations and acronyms in this manual are spelled out in the glossary. The

glossary also contains definitions of important terms.

Push button navigation in the LHMI menu structure is presented by using the

push button icons, for example:

To navigate between the options, use and .

HMI menu paths are presented in bold, for example:

Select Main menu/Settings.

LHMI messages are shown in Courier font, for example:

To save the changes in non-volatile memory, select Yes and press .

Parameter names are shown in italics, for example:

The function can be enabled and disabled with the Operation setting.

Parameter values are indicated with quotation marks, for example:

The corresponding parameter values are "On" and "Off".

IED input/output messages and monitored data names are shown in Courier

font, for example:

When the function starts, the START output is set to TRUE.

1.4.3 Functions, codes and symbolsTable 1: REU615 Functions, codes and symbolsFunction IEC 61850 IEC 60617 IEC-ANSIProtectionThree-phase non-directional

overcurrent protection, low stage,

instance 1

PHLPTOC1 3I> (1) 51P-1 (1)

Three-phase non-directional

overcurrent protection, high stage,

instance 1

PHHPTOC1 3I>> (1) 51P-2 (1)


overcurrent protection,

instantaneous stage, instance 1

PHIPTOC1 3I>>> (1) 50P/51P (1)

Residual overvoltage protection,

instance 1ROVPTOV1 Uo> (1) 59G (1)





Three-phase undervoltage

protection, instance 1PHPTUV1 3U< (1) 27 (1)





Table continues on next page




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Function IEC 61850 IEC 60617 IEC-ANSIThree-phase overvoltage

protection, instance 1PHPTOV1 3U> (1) 59 (1)

Three-phase overvoltage

protection, instance 2

PHPTOV2 3U> (2) 59 (2)


protection, instance 3PHPTOV3 3U> (3) 59 (3)

Positive-sequence undervoltage

protection, instance 1PSPTUV1 U1< (1) 47U+ (1)


protection, instance 2PSPTUV2 U1< (2) 47U+ (2)

Negative-sequence overvoltage

protection, instance 1NSPTOV1 U2> (1) 47O- (1)


protection, instance 2NSPTOV2 U2> (2) 47O- (2)

Frequency protection, instance 1 FRPFRQ1 f>/f/f/f/f/f/fT 49T

Master trip, instance 1 TRPPTRC1 Master Trip (1) 94/86 (1)


Arc protection, instance 1 ARCSARC1 ARC (1) 50L/50NL (1)



Multi-purpose protection, instance

11)MAPGAPC1 MAP (1) MAP (1)





Load shedding and restoration,

instance 1LSHDPFRQ1 UFLS/R (1) 81LSH (1)









ControlCircuit-breaker control CBXCBR1 I O CB I O CB





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Function IEC 61850 IEC 60617 IEC-ANSIDisconnector position indication,

instance 1DCSXSWI1 I O DC (1) I O DC (1)

Disconnector position indication,

instance 2

DCSXSWI2 I O DC (2) I O DC (2)


instance 3DCSXSWI3 I O DC (3) I O DC (3)

Earthing switch indication ESSXSWI1 I O ES I O ES

Tap changer position indication TPOSSLTC1 TPOSM 84M

Tap changer control with voltage

regulatorOLATCC1 COLTC 90V

Synchronism and energizing check SECRSYN1 SYNC 25

Condition monitoringTrip circuit supervision, instance 1 TCSSCBR1 TCS (1) TCM (1)

Trip circuit supervision, instance 2 TCSSCBR2 TCS (2) TCM (2)

Current circuit supervision CCRDIF1 MCS 3I MCS 3I

Fuse failure supervision SEQRFUF1 FUSEF 60

MeasurementDisturbance recorder RDRE1 - -

Three-phase current

measurement, instance 1CMMXU1 3I 3I

Sequence current measurement CSMSQI1 I1, I2, I0 I1, I2, I0

Three-phase voltage measurement VMMXU1 3U 3U

Residual voltage measurement RESVMMXU1 Uo Vn

Sequence voltage measurement VSMSQI1 U1, U2, U0 U1, U2, U0

Three-phase power and energy

measurement, including power

factor

PEMMXU1 P, E P, E

RTD/mA measurement XRGGIO130 X130 (RTD) X130 (RTD)

Frequency measurement FMMXU1 f f

1) Multi-purpose protection is used for, for example, RTD/mA based protection.




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Section 2 REU615 overview

2.1 OverviewThe voltage protection and control IED, REU615 is available in two standard

configurations, denoted A and B. Configuration A is preadapted for voltage and

frequency-based protection schemes in utility and industrial power systems and

distribution systems including networks with distributed power generation. The B

configuration is designed for automatic voltage regulation of power transformers

equipped with an on-load tap-changer. Both configurations also feature additional

CB control, measuring and supervising functions. REU615 is a member of ABBs

Relion product family and part of its 615 protection and control product series.

The 615 series IEDs are characterized by their compactness and withdrawableunit

design.

Re-engineered from the ground up, the 615 series has been designed to unleash the

full potential of the IEC 61850 standard for communication and interoperability

between substation automation devices. Once the standard configuration IED has

been given the application-specific settings, it can directly be put into service.

The 615 series IEDs support a range of communication protocols including IEC

61850 with GOOSE messaging, IEC 60870-5-103, Modbus

and DNP3.

2.1.1 Product version historyProduct version Product history3.0 Product released

2.1.2 PCM600 and IED connectivity package version Protection and Control IED Manager PCM600 Ver. 2.3 or later

REU615 Connectivity Package Ver. 3.0 or later

Parameter Setting

Firmware Update

Disturbance Handling

Signal Monitoring

Lifecycle Traceability

Signal Matrix

Communication Management

IED Configuration Migration

Configuration Wizard

Label Printing

1MRS757054 C Section 2REU615 overview



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IED User Management

Application Configuration

Graphical Display Editor

Download connectivity packages from the ABB web site http://

www.abb.com/substationautomation

2.2 Operation functionality2.2.1 Optional functions

Arc protection (configuration A only)

Modbus TCP/IP or RTU/ASCII

IEC 60870-5-103

DNP3 TCP/IP or serial

RTD/mA measurements and multi-purpose protection (configuration B only)

2.3 Physical hardwareThe IED consists of two main parts: plug-in unit and case. The content depends onthe ordered functionality.

Table 2: Plug-in unit and caseMain Slot ID Content optionsPlug-in

unit

- HMI Small (4 lines, 16 characters)

Large (8 lines, 16 characters)

X100 Auxiliary power/BO

module

48-250V DC/100-240 V AC; or 24-60 V DC

2 normally-open PO contacts

1 change-over SO contacts

1 normally open SO contact

2 double-pole PO contacts with TCS

1 dedicated internal fault output contact

X110 BIO module 8 binary inputs

4 signal output contacts

X120 AI/BI module Only with configuration B:

3 phase current inputs (1/5 A)

1 residual current input (1/5 A)

3 phase voltage inputs (60-210 V)


Section 2 1MRS757054 CREU615 overview

http://http//WWW.ABB.COM/SUBSTATIONAUTOMATIONhttp://http//WWW.ABB.COM/SUBSTATIONAUTOMATION


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Main Slot ID Content optionsCase X130 AI/BI module Only with configuration A:

3 phase voltage inputs (60-210 V)

1 residual voltage input (60-210 V)

1 reference voltage input for SECRSYN1 (60-210 V)

4 binary inputs

Optional RTD/mA module Optional for configuration B:

2 generic mA inputs

6 RTD sensor inputs

Optional BIO module Optional for configuration B:

6 binary inputs

3 signal output contacts

X000 Optional communication

module

See technical manual for details about different

type of communication modules.

Rated values of the current and voltage inputs are basic setting parameters of the

IED. The binary input thresholds are selectable within the range 18176 V DC by

adjusting the binary input setting parameters.

The rated input levels are selected in the IED software for phase current and

ground current. The binary input thresholds 18...176 V DC are selected by

adjusting the IED's parameter settings.

The optional BIO module can be added in the IED to all standard

configurations.

The connection diagrams of different hardware modules are presented in this manual.

See the installation manual for more information about the case and

the plug-in unit.

T ab le 3: N um be r of p hysica l co nne ction s in sta nda rd co nfig ura tio nsConf. Analog channels Binary channels CT VT RTD/mA BI BO

A - 5 - 12 10

B 4 3- 8 (14)1) 10 (13)1)

6/22) 8 10

1) With optional BIO module

2) With optional RTD/mA module




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2.4 Local HMI

REF615

Overcurrent

Dir. earth-fault

Voltage protection

Phase unbalance

Thermal overload

Breaker failure

Disturb. rec. Triggered

CB condition monitoring

Supervision

Arc detected

Autoreclose shot in progr.

A070704 V3 EN

Figure 2: Example of 615 series LHMI

The LHMI of the IED contains the following elements:

Display

Buttons

LED indicators

Communication port

The LHMI is used for setting, monitoring and controlling.

2.4.1 DisplayThe LHMI includes a graphical display that supports two character sizes. The

character size depends on the selected language. The amount of characters and

rows fitting the view depends on the character size.




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Table 4: Characters and rows on the viewCharacter size Rows in view Characters on rowSmall, mono-spaced (6x12

pixels)

5 rows

10 rows with large screen

20

Large, variable width (13x14

pixels)

4 rows

8 rows with large screen

min 8

The display view is divided into four basic areas.

1 2

3 4

A070705 V2 EN

Figure 3: Display layout

1 Header

2 Icon

3 Content

4 Scroll bar (displayed when needed)

2.4.2 LEDsThe LHMI includes three protection indicators above the display: Ready, Start and

Trip.

There are also 11 matrix programmable LEDs on front of the LHMI. The LEDs

can be configured with PCM600 and the operation mode can be selected with the

LHMI, WHMI or PCM600.

2.4.3 KeypadThe LHMI keypad contains push-buttons which are used to navigate in different

views or menus. With the push-buttons you can give open or close commands to

one object in the primary circuit, for example, a circuit breaker, a contactor or a

disconnector. The push-buttons are also used to acknowledge alarms, reset

indications, provide help and switch between local and remote control mode.




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A071176 V1 EN

Figure 4: LHMI keypad with object control, navigation and command push-

buttons and RJ-45 communication port

2.5 Web HMIThe WHMI enables the user to access the IED via a web browser. The supported

web browser version is Internet Explorer 7.0 or later.

WHMI is disabled by default.

WHMI offers several functions.

Programmable LEDs and event lists

System supervision

Parameter settings

Measurement display

Disturbance records

Phasor diagram

Single-line diagram

The menu tree structure on the WHMI is almost identical to the one on the LHMI.




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A070754 V3 EN

Figure 5: Example view of the WHMI

The WHMI can be accessed locally and remotely.

Locally by connecting your laptop to the IED via the front communication port.

Remotely over LAN/WAN.

2.6 AuthorizationThe user categories have been predefined for the LHMI and the WHMI, each with

different rights and default passwords.

The default passwords can be changed with Administrator user rights.

User authorization is disabled by default but WHMI always uses

authorization.




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Table 5: Predefined user categoriesUsername User rightsVIEWER Read only access

OPERATOR Selecting remote or local state with (only locally) Changing setting groups

Controlling

Clearing indications

ENGINEER Changing settings

Clearing event list

Clearing disturbance records

Changing system settings such as IP address, serial baud rate

or disturbance recorder settings

Setting the IED to test mode

Selecting language

ADMINISTRATOR All listed above

Changing password Factory default activation

For user authorization for PCM600, see PCM600 documentation.

2.7 CommunicationThe IED supports a range of communication protocols including IEC 61850, IEC

60870-5-103, Modbus and DNP3. Operational information and controls are

available through these protocols. However, some communication functionality,

for example, horizontal communication between the IEDs, is only enabled by the

IEC 61850 communication protocol.

The IEC 61850 communication implementation supports all monitoring and

control functions. Additionally, parameter settings, disturbance recordings and

fault records can be accessed using the IEC 61850 protocol. Disturbance recordings

are available to any Ethernet-based application in the standard COMTRADE file

format. The IED can send and receive binary signals from other IEDs (so calledhorizontal communication) using the IEC61850-8-1 GOOSE profile, where the

highest performance class with a total transmission time of 3 ms is supported.

Further, the IED supports sending and receiving of analog values using GOOSE

messaging. The IED meets the GOOSE performance requirements for tripping

applications in distribution substations, as defined by the IEC 61850 standard. The

IED can simultaneously report events to five different clients on the station bus.

The IED can support five simultaneous clients. If PCM600 reserves one client

connection, only four client connections are left, for example, for IEC 61850 and

Modbus.




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All communication connectors, except for the front port connector, are placed on

integrated optional communication modules. The IED can be connected to Ethernet-

based communication systems via the RJ-45 connector (100Base-TX) or the fibre-

optic LC connector (100Base-FX).

Managed Ethernet switch

with RSTP support

Managed Ethernet switch

with RSTP support

RED615 REF615 RET615 REU615 REM615

Client BClient A

Network

Network

GUID-AB81C355-EF5D-4658-8AE0-01DC076E519C V1 EN

Figure 6: Self-healing Ethernet ring solution

The Ethernet ring solution supports the connection of up to thirty

615 series IEDs. If more than 30 IEDs are to be connected, it is

recommended that the network is split into several rings with no

more than 30 IEDs per ring.




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20


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Section 3 REU615 standard configurations

3.1 Standard configurationsREU615 is available in two standard configurations. The standard signal

configuration can be altered by means of the graphical signal matrix or the optional

graphical application functionality of the Protection and Control IED Manager

PCM600. Further, the application configuration functionality of PCM600 supports

the creation of multi-layer logic functions using various logical elements, including

timers and flip-flops. By combining protection functions with logic function

blocks, the IED configuration can be adapted to user-specific application

requirements.

Table 6: Standard configurationsDescription Std.conf.Voltage and frequency based protection and measurement functions, synchrocheck

and load sheddingA

Automatic voltage regulator B

Table 7: Supported functionsFunctionality A BProtection1)Three-phase non-directional overcurrent protection, low stage, instance 1 -

Three-phase non-directional overcurrent protection, high stage, instance 1 -

Three-phase non-directional overcurrent protection, instantaneous stage, instance 1 -

Residual overvoltage protection, instance 1 2) -



Three-phase undervoltage protection, instance 1



Three-phase overvoltage protection, instance 1



Positive-sequence undervoltage protection, instance 1 -

Positive-sequence undervoltage protection, instance 2 -

Negative-sequence overvoltage protection, instance 1 -

Negative-sequence overvoltage protection, instance 2 -


1MRS757054 C Section 3REU615 standard configurations



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Functionality A BFrequency protection, instance 1 -

Frequency protection, instance 2 -





Three-phase thermal overload protection for power transformers, two time constants -

Master trip, instance 1

Master trip, instance 2

Arc protection, instance 1 o3) -



Multi-purpose protection, instance 14) - o



Load shedding and restoration, instance 1 -





ControlCircuit-breaker control

Disconnector position indication, instance 1



Earthing switch indication

Tap changer position indication -

Tap changer control with voltage regulator -

Synchronism and energizing check -

Condition MonitoringTrip circuit supervision, instance 1 Trip circuit supervision, instance 2

Current circuit supervision -

Fuse failure supervision -

MeasurementDisturbance recorder

Three-phase current measurement, instance 1 -

Sequence current measurement -

Three-phase voltage measurement


Section 3 1MRS757054 CREU615 standard configurations



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Functionality A BResidual voltage measurement -

Sequence voltage measurement

Three-phase power and energy measurement, including power factor -

RTD/mA measurement - o

Frequency measurement -

= included, o = optional at the time of order

1) Note that all directional protection functions can also be used in non-directional mode.

2) Uo selectable by parameter, Uo measured as default.

3) Light only.

4) Multi-purpose protection is used for, for example, RTD/mA based protection.




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3.2 Connection diagrams

GUID-E8E4A6F1-57F5-4E53-AACF-FA95E7D92D83 V1 EN

Figure 7: Connection diagram for the A configuration




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GUID-46B7ECD1-0F3F-4DCA-8144-8A485D02061A V1 EN

Figure 8: Connection diagram for the A configuration (voltage protection with

phase-to-earth voltage measurement)




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GUID-64ADD3D1-99D0-458B-8E28-5023277CFD6C V1 EN

Figure 9: Connection diagram for the B configuration




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GUID-AE8916E5-D21C-4C90-B38A-C93EDE80FF2E V1 EN

Figure 10: Connection diagram for the B configuration (on load tap changer

control with phase-to-earth voltage measurement)

3.3 Presentation of standard configurationsFunctional diagramsThe functional diagrams describe the IED's functionality from the protection,

measuring, condition monitoring, disturbance recording, control and interlocking

perspective. Diagrams show the default functionality with simple symbol logics




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forming principle diagrams. The external connections to primary devices are also

shown, stating the default connections to measuring transformers. The positive

measuring direction of directional protection functions is towards the outgoing feeder.

The functional diagrams are divided into sections with each section constitutingone functional entity. The external connections are also divided into sections. Only

the relevant connections for a particular functional entity are presented in each

section.

Protection function blocks are part of the functional diagram. They are identified

based on their IEC 61850 name but the IEC based symbol and the ANSI function

number are also included. Some function blocks, such as PHHPTOC, are used

several times in the configuration. To separate the blocks from each other, the IEC

61850 name, IEC symbol and ANSI function number are appended with a running

number, that is an instance number, from one upwards. If the block has no suffix

after the IEC or ANSI symbol, the function block has been used, that is,instantiated, only once. The IEDs internal functionality and the external

connections are separated with a dashed line presenting the IEDs physical casing.

Signal Matrix and Application ConfigurationWith Signal Matrix and Application Configuration in PCM600, it is possible to

modify the standard configuration according to the actual needs. The IED is

delivered from the factory with default connections described in the functional

diagrams for binary inputs, binary outputs, function-to-function connections and

alarm LEDs. The Signal Matrix is used for GOOSE signal input engineering and

for making cross-references between the physical I/O signals and the function

blocks. The Signal Matrix tool cannot be used for adding or removing functionblocks, for example, GOOSE receive function blocks. The Application

Configuration tool is used for these kind of operations. If a function block is

removed with Application Configuration, the function related data disappears from

the menus as well as from the 61850 data model, with the exception of some basic

function blocks, which are mandatory and thus cannot be removed from the IED

configuration by removing them from the Application Configuration.

3.4 Standard configuration A3.4.1 Applications

The standard configuration is intended for voltage protection and synchronism

check in medium voltage networks. The standard configuration handles fault

conditions originating from abnormal voltages in the power system. Also the

synchronism and energizing check can be handled for two galvanically

interconnected networks.

The IED with a standard configuration is delivered from the factory with default

settings and parameters. The end-user flexibility for incoming, outgoing and




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internal signal designation within the IED enables this configuration to be further

adapted to different primary circuit layouts and the related functionality needs by

modifying the internal functionality using PCM600.

3.4.2 FunctionsTable 8: Functions included in the standard configuration AFunctionality IEC 61850 IEC 60617 IEC-ANSIProtectionResidual overvoltage protection,

instance 1

ROVPTOV1 Uo> (1) 59G (1)


instance 2



instance 3




PHPTUV1 3U< (1) 27 (1)



PHPTUV2 3U< (2) 27 (2)



PHPTUV3 3U< (3) 27 (3)



PHPTOV1 3U> (1) 59 (1)



PHPTOV2 3U> (2) 59 (2)



PHPTOV3 3U> (3) 59 (3)



PSPTUV1 U1< (1) 47U+ (1)



PSPTUV2 U1< (2) 47U+ (2)



NSPTOV1 U2> (1) 47O- (1)



NSPTOV2 U2> (2) 47O- (2)

Frequency protection, instance 1 FRPFRQ1 f>/f/f/f/f/f/f


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Functionality IEC 61850 IEC 60617 IEC-ANSILoad shedding and restoration,

instance 1

LSHDPFRQ1 UFLS/R (1) 81LSH (1)


instance 2



instance 3



instance 4



instance 5




instance 1


Disconnector position indication,instance 2



instance 3



Synchronism and energizing check SECRSYN1 SYNC 25





Residual voltage measurement RESVMMXU1 Uo Vn


Frequency measurement FMMXU1 f f

3.4.2.1 Default I/O connectionsTable 9: Default connections for binary inputsBinary input Default usage Connector pinsX110-BI1 Setting group change X110-1,2

X110-BI2 Manual restore group 1 X110-3,4

X110-BI3 Manual restore group 2 X110-5,6

X110-BI4 X110-7,6

X110-BI5 Voltage transformer truck in indication X110-8,9

X110-BI6 Voltage transformer truck out indication X110-10,9

X110-BI7 Earth switch closed indication X110-11,12

X110-BI8 Earth switch open indication X110-13,12





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Binary input Default usage Connector pinsX130-BI1 Blown primary fuse indication X130-1,2

X130-BI2 Line voltage transformer MCB open X130-2,3

X130-BI3 Bus voltage transformer MCB open X130-4,5

X130-BI4 Lockout reset X130-5,6

Table 10: D efault connections for binary outputsBinary output Default usage Connector pinsX100-PO1 X100-6,7

X100-PO2 In synchronism for close X100-8,9

X100-SO1 General start indication X100-10,11,(12)

X100-SO2 General operate indication X100-13,14

X100-PO3 Open circuit breaker/trip coil 1 X100-15-19

X100-PO4 Open circuit breaker/trip coil 2 X100-20-24

X110-SO1 Load shedding group 1 X110-14,15,16

X110-SO2 Load shedding group 2 X110-17,18,19

X110-SO3 Load restore group 1 X110-20,21,22

X110-SO4 Load restore group 2 X110-23,24

Table 11: Default connections for LEDsLED Default usage1 Overvoltage protection operated

2 Undervoltage protection operated

3 Residual voltage protection operated

4 Sequence voltage protection operated

5 Frequency protection operated

6 Load shedding operated

7 Disturbance recorder triggered

8 Systems synchronized

9 Voltage transformer secondary MCB open

10 Arc fault detected

11 Primary voltage transformer fuse blown

3.4.2.2 Default disturbance recorder settings




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T ab le 12 : D efa ult ana lo g ch an nel se le ction an d tex t s ettin gsChannel Selection and text1 Uo

2 U13 U2

4 U3

5 U1B

6 -

7 -

8 -

9 -

10 -

11 -

12 -

Additionally, all the digital inputs that are connected by default are also enabled

with the setting. Default triggering settings are selected depending on the

connected input signal type. Typically all protection START signals are selected to

trigger the disturbance recorded by default.

3.4.3 Functional diagramsThe functional diagrams describe the default input, output, alarm LED and function-

to-function connections. The default connections can be viewed and changed with

PCM600 according to the application requirements, if necessary.

The analog channels, measurements from voltage transformers, have fixed

connections towards the different function blocks inside the IEDs standard

configuration. Exceptions from this rule are the eight analog channels available for

the disturbance recorder function. These channels are freely selectable and a part of

the disturbance recorders parameter settings.

The analog channels are assigned to different functions. The common signal

marked with 3U represents the three phase voltages. The signal marked with Uorepresents the measured residual voltage via open-delta connected voltage

transformers.

3.4.3.1 Functional diagrams for protectionThe functional diagrams describe the IEDs protection functionality in detail and

picture the factory set default connections.




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GUID-4071AE4F-377A-4D4A-A506-B5A55C840C74 V1 EN

Figure 11: Overvoltage protection

Three overvoltage protection stages (PHxPTOV) protect against abnormal phase

voltage conditions in the power system. The operation of voltage functions is

connected to alarm LED 1.

Depending on the selected operation mode, the active setting group can be changed

either with a parameter or via binary input.

All operate signals are connected to the Master Trip and also to the alarm LEDs.

LED 1 indicates operation of overvoltage and LED 2 operation of undervoltage

protection functions. LED 3 indicates operation of residual overvoltage and LED 4

voltage unbalance protection. LED 5 indicates operation of frequency protection.




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GUID-BBD0D81F-5F94-4E97-8CF5-560F9EA9562F V1 EN

Figure 12: Undervoltage protection

Three undervoltage protection stages (PHxPTUV) protect against abnormal phase

voltage conditions in the power system. The operation of voltage functions is

connected to alarm LED 2. An external supervision device detects failures in

primary high voltage fuses and the activation is connected to binary input

X130:BI1. Activating the binary input to avoid faulty undervoltage tripping blocks

the undervoltage protection functions.

GUID-6A4FADFD-F55D-433D-894F-370CF538F902 V1 EN

Figure 13: Residual overvoltage protection




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The residual overvoltage protection (ROVPTOV) provides earth-fault protection

by detecting abnormal level of residual voltage. It can be used, for example, as a

nonselective backup protection for the selective directional earth-fault

functionality. The operation signal is connected to alarm LED 3.

GUID-98C7A5F0-B1A7-4008-92D2-FBACE327C843 V1 EN

Figure 14: Positive and negative sequence voltage protection

Four unbalance voltage protection functions are offered: two stages of negative-

sequence overvoltage protection (NSPTOV1) and two stages positive-sequence

undervoltage protection (PSPTUV1) functions. NSPTOV1 and PSPTUV1 are

blocked in case a blown primary fuse is detected.




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GUID-0F39CC9C-7388-47F5-89F3-666E4D0D42CB V1 EN

Figure 15: Frequency protection

The selectable underfrequency or overfrequency protection (FRPFRQ) prevents

damage to network components under unwanted frequency conditions.




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The function contains a selectable rate of change of the frequency (gradient)

protection to detect an increase or decrease in the fast power system frequency at

an early stage. This can be used as an early indication of a disturbance in the

system. The operation signal is connected to alarm LED 5.

GUID-3B69C572-5221-4320-850C-DD1DB0933037 V2 EN

Figure 16: Load shedding and restoration

Five load shedding and restoration stages are offered in the standard configuration.

The load shedding and restoration function (LSHDPFRQ) is capable of shedding

load based on underfrequency and the rate of change of the frequency. The load

that is shed during the frequency disturbance can be restored once the frequency is

stabilized to the normal level. Also manual restore commands can be given via

binary inputs.




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In this standard configuration two restore stages are implemented. Depending on

input and output usage, it is possible to take other stages into use as well. The

operation signal is connected to the alarm LED 6.

GUID-ACA8588C-03FB-4389-B559-92CB612C6F8A V1 EN

Figure 17: Arc protection

Arc protection (ARCSARC1...3) is included as an optional function.

The arc protection offers individual function blocks for three arc sensors that can

be connected to the IED. The arc protection in this standard configuration detects

an arc flash and supplies the information for the operating arc protection unit,

which de-energizes the faulty area by opening the circuit breaker. It is possible to

use, for example, fast GOOSE communication to route the detected information to

the circuit breaker.

The alarm LED 10 is used as a common arc detected indication.

3.4.3.2 Functional diagram for disturbance recorder




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GUID-95F1202A-A4AD-46C5-B059-B36F02FB2951 V1 EN

Figure 18: Disturbance recorder

All start and operate signals from the protection stages are routed to trigger the

disturbance recorder or alternatively only to be recorded by the disturbance

recorder depending on the parameter settings. Additionally, the ARC protection,

synchrocheck and voltage measuring circuit related signals are also connected.




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3.4.3.3 Functional diagrams for control and interlocking

GUID-4F3709BF-87AC-4EB7-86AE-0FD490AA925A V1 EN

Figure 19: Synchronism and energizing check

The synchronism and energizing check (SECRSYN) function is offered in the

standard configuration. It is used for interconnecting two separate power system

network parts. The standard configuration is implemented to be used as continuous

mode by default. The permission signal for circuit breaker closing is connected to

X100:PO2 and it can be used in series in circuit breaker closing circuit. Theinformation that systems are synchronous to be interconnected is connected to LED

8.

SECRSYN is blocked if primary voltage transformer fuse is blown (X130:BI1) or

if the miniature circuit breaker failure is detected from the line or bus-side

secondary voltage measuring circuit (X130:BI2 or X130:BI3).




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GUID-134FABAF-FD7D-4CDF-A47A-B6E9D988065E V1 EN

Figure 20: Master Trip

The operate signals from the protections are connected to the two trip output

contacts PO3 (X100:15-19) and PO4 (X100:20-24) via the corresponding Master

Trips TRPPTRC1 and TRPPTRC2.

TRPPTRC1 and 2 provide the lockout/latching function, event generation and the

trip signal duration setting. If the lockout operation mode is selected, one binary

input can be reassigned to the RST_LKOUT input of the Master Trip to enable

external reset with a push button.




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GUID-1CF419D7-518A-431F-BCAB-02413BE39E22 V1 EN

Figure 21: Disconnector position indication

The voltage transformer truck position indication is done with DCSXSWI1

function block. There are three disconnector status blocks (DCSXSWI13)

available in the IED. The remaining two not described in the functional diagram

are available in PCM600 for connection where applicable.

The binary inputs X110:5 and X110:6 are used for connection of voltage

transformer truck position. The inputs are connected to DCSXSWI1.

T ab le 13 : D ev ice pos itio ns ind ic ate d b y b in ary inp uts 5 a nd 6Primary device position Input to be energized

Input 5 (X110:8-9) Input 6 (X110:10-9)

Busbar disconnector closed x

Busbar disconnector open x

Voltage transformer truck in service

position

x

Voltage transformer truck in test position x

The binary inputs X110:7 and X110:8 are used for the position indication of thebusbar-side earth switch.




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GUID-02E97DB4-8623-4B39-A38A-589778A9186A V1 EN

Figure 22: Common alarm/indication 1 and 2

The signal outputs from the IED are connected to give dedicated information on:

Start of any protection function SO1 (X100:10-12)

Operation (trip) of any protection function SO2 (X100: 13-15)

TPGAPC are timers and used for setting the minimum pulse length for the outputs.

There are four generic timers (TPGAPC1..4) available in the IED. The remaining

ones not described in the functional diagram are available in PCM600 for

connection where applicable.

3.5 Standard configuration B3.5.1 Applications

The standard configuration is intended for automatic voltage regulation of power

transformers equipped with an on-load tap changer. It also features three-stage three-




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phase non-directional overcurrent protection, three-phase under and overvoltage

protection. The IED also incorporates a thermal overload protection function,

which supervises the thermal stress of the transformer windings to prevent

premature aging of the winding's insulation.

The RTD/mA input module is optional in the standard configuration. When using

the RTD/mA input module it is possible to have the tap changer position indication

as an mA signal, ambient temperature of the power transformer can be used in

thermal protection and the multi-purpose protection functions are available. The

multi-purpose protection function enables protection based on analog values from

the IEDs RTD/mA input module, or from other IEDs using analog horizontal

GOOSE messaging.

The IED with a standard configuration is delivered from the factory with default

settings and parameters. The end-user flexibility for incoming, outgoing and

internal signal designation within the IED enables this configuration to be furtheradapted to different primary circuit layouts and the related functionality needs by

modifying the internal functionality using PCM600.

3.5.2 FunctionsT ab le 14 : F unc tio ns in clu de d in th e s ta nda rd co nfig ura tion BFunctionality IEC 61850 IEC 60617 IEC-ANSIProtectionThree-phase non-directional

overcurrent protection, low stage,

instance 1

PHLPTOC1 3I> (1) 51P-1 (1)


overcurrent protection, high stage,

instance 1

PHHPTOC1 3I>> (1) 51P-2 (1)


overcurrent protection,

instantaneous stage, instance 1

PHIPTOC1 3I>>> (1) 50P/51P (1)



PHPTUV1 3U< (1) 27 (1)



PHPTUV2 3U< (2) 27 (2)



PHPTUV3 3U< (3) 27 (3)



PHPTOV1 3U> (1) 59 (1)



PHPTOV2 3U> (2) 59 (2)



PHPTOV3 3U> (3) 59 (3)

Three-phase thermal overload

protection for power transformers,

two time constants

T2PTTR1 3Ith>T 49T






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Functionality IEC 61850 IEC 60617 IEC-ANSIMaster trip, instance 2 TRPPTRC2 Master Trip (2) 94/86 (2)

Multi-purpose protection, instance 1 MAPGAPC1 MAP (1) MAP (1)





instance 1



instance 2



instance 3



Tap changer position indication TPOSSLTC1 TPOSM 84M

Tap changer control with voltage

regulator

OLATCC1 COLTC 90V



Current circuit supervision CCRDIF1 MCS 3I MCS 3I

Fuse failure supervision SEQRFUF1 FUSEF 60


Three-phase current measurement,

instance 1

CMMXU1 3I 3I

Sequence current measurement CSMSQI1 I1, I2, I0 I1, I2, I0



Three-phase power and energy

measurement, including power

factor

PEMMXU1 P, E P, E

RTD/mA measurement XRGGIO130 X130 (RTD) X130 (RTD)

3.5.2.1 Default I/O connectionsTable 15: Default connections for binary inputsBinary input Default usage Connector pinsX110-BI1 Tap changer operates X110-1,2

X110-BI2 Voltage transformer secondary MCB open X110-3,4

X110-BI3 Lower local request X110-5,6

X110-BI4 Raise local request X110-7,6





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Binary input Default usage Connector pinsX110-BI5 Activate parallel operation X110-8,9

X110-BI6 Activate automatic mode X110-10,9

X110-BI7 Circuit breaker closed indication X110-11,12

X110-BI8 Circuit breaker open indication X110-13,12

Tab le 16 : Defau lt connec tions for bina ry inpu ts (a lterna tive to the RTD ca rd )Binary input Default usage Connector pinsX130-BI1 BCD sign bit (tap changer position) X130-1,2

X130-BI2 BCD bit 1 MSB X130-2,3

X130-BI3 BCD bit 2 X130-4,5

X130-BI4 BCD bit 3 X130-5,6

X130-BI5 BCD bit 4 X130-7,8

X130-BI6 BCD bit 5 LSB X130-8,9

Table 17: Default connections for RDT/m A inputsRTD/mA input Default usage Connector pinsX130-AI1 Tap changer position X130-1,2

X130-AI2 X130-3,4

X130-AI3 Transformer ambient temperature X130-5,6,11c

X130-AI4 X130-7,8,11c

X130-AI5 X130-9,10,11c

X130-AI6 X130-13,14,12c

X130-AI7 X130-15,16,12c

X130-AI8 X130-17,18,12c

Table 18: D efault connections for binary outputsBinary output Default usage Connector pinsX100-PO1 Lower own command X100-6,7

X100-PO2 Raise own command X100-8,9

X100-SO1 General start indication X100-10,11,(12)

X100-SO2 General operate indication X100-13,14

X100-PO3 Master trip X100-15-19

X100-PO4 Close circuit breaker X100-20-24

X110-SO1 Tap changer control alarm X110-14,15,16

X110-SO2 Overcurrent operate alarm X110-17,18,19

X110-SO3 Voltage protection operate alarm X110-20,21,22

X110-SO4 Overload protection operate alarm X110-23,24




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Table 19: Default connections for LEDsLED Default usage1 Overcurrent protection operated

2 Overvoltage protection operated3 Undervoltage protection operated

4 Thermal overload protection operated

5 Raise own

6 Lower own

7 Disturbance recorder triggered

8 Tap changer control alarm

9 Supervision

10 Tap changer operates

11

3.5.2.2 Default disturbance recorder settingsT ab le 20: D efau lt a nalog ch ann el se lec tio n a nd te xt se tting sChannel Selection and text1 IL1

2 IL2

3 IL3

4 Io5 U1

6 U2

7 U3

8 -

9 -

10 -

11 -

12 -

Additionally, all the digital inputs that are connected by default are also enabled

with the setting. Default triggering settings are selected depending on the

connected input signal type. Typically all protection START signals are selected to

trigger the disturbance recorded by default.

3.5.3 Functional diagrams




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The functional diagrams describe the default input, output, alarm LED and function-

to-function connections. The default connections can be viewed and changed with

PCM600 according to the application requirements, if necessary.

The analog channels, measurements from current transformers and voltagetransformers, have fixed connections towards the different function blocks inside

the IEDs standard configuration. Exceptions from this rule are the eight analog

channels available for the disturbance recorder function. These channels are freely

selectable and a part of the disturbance recorders parameter settings.

The analog channels are assigned to different functions. The common signal

marked with 3I represents the three phase currents and 3U represents the three

phase voltages. The signal marked with Uo represents the measured residual

voltage via open-delta connected voltage transformers. The signal marked with Io

represents the measured residual current, via a sum connection of second current

transformer cores of the phase current transformers.

3.5.3.1 Functional diagrams for protectionThe functional diagrams describe the IEDs protection functionality in detail and

picture the factory set default connections.

GUID-2125AE49-AD79-460A-AF83-3965D2F06F2F V1 EN

Figure 23: Overcurrent protection




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Three overcurrent stages (PHLPTOC1, PHHPTOC1 and PHIPTOC1) are offered

for overcurrent and short-circuit protection. LED 1 is used for indicating the

operation of overcurrent and short circuit functions. Also the same alarm

information is connected to the binary output SO2 (X110:17-19).

All operate signals are connected to the Master Trip and also to the alarm LEDs.

LED 1 indicates operation of overcurrent and LED 2 operation of overvoltage

protection functions. LED 3 indicates operation of undervoltage and LED 4

thermal overload protection.

GUID-C07A4101-8768-4365-BB4F-17CF3CF3D075 V1 EN

Figure 24: Thermal overload protection

Three-phase thermal overload protection (T2PTTR1) provides indication onoverload situations. The operate signal of the thermal overload protection is

connected to the Master Trip and also to an alarm LED 4.

If the RTD/mA input module is included in the IED, the ambient temperature of

the power transformer is connected from the RTD channel to the thermal overload

function.




56/80

GUID-3EC07F90-DCAB-436A-B36F-965BD8AAB645 V1 EN

Figure 25: Overvoltage protection

Three overvoltage protection stages (PHPTOV1, PHPTOV2 and PHPTOV3) offer

protection against abnormal overvoltage conditions in the power system. LED 2

indicates the operation of PHPTOV. The same alarm information is connected to

the binary output SO3 (X110:20-22).




57/80

GUID-CA6719A8-E586-4B52-80F2-9504EA0CCA26 V1 EN

Figure 26: Undervoltage protection

Three undervoltage protection stages (PHPTUV1, PHPTUV2 and PHPTUV3)

offer protection against abnormal undervoltage conditions in the power system.

LED 3 indicates the operation of PHPTUV. The same alarm information is

connected to the binary output SO3 (X110:20-22).

3.5.3.2 Functional diagrams for disturbance recorder and supervisionfunctions




58/80

GUID-F538B88A-B5BB-4DB8-8364-06E7CF14239C V1 EN

Figure 27: Disturbance recorder

All start and operate signals from the protection stages are routed to trigger the

disturbance recorder or alternatively only to be recorded by the disturbance

recorder depending on the parameter settings. Additionally, the supervision related

signals, tap changer control signals and circuit breaker position indications are also

connected.




59/80

GUID-E7EAE99F-92BC-4192-B485-EB1677BA407D V1 EN

Figure 28: Trip circuit supervision

Two separate trip circuit supervision functions are included, TCSSCBR1 for PO3

(X100:15-19) for Master trip and TCSSCBR2 for PO4 (X100:20-24) for circuit

breaker closing. The trip circuit supervision 1 is blocked by the Master Trip

(TRPPTRC1) and the circuit-breaker open position signal. The trip circuit

supervision 2 is blocked by the circuit breaker closed position signal. The trip

circuit supervision alarm indication is connected to LED 9.

The fuse failure supervision SEQRFUF1 detects failures in voltage measurement

circuits. Failures, such as open miniature circuit breaker, are detected and the alarm

is connected to supervision alarm LED 9.

Failures in current measuring circuits are detected by CCRDIF. The alarm signal isconnected to the supervision alarm LED 9.

3.5.3.3 Functional diagrams for control and interlocking




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GUID-73D10A91-CE58-4368-9C88-39D2268580E6 V1 EN

Figure 29: Master Trip

The operate signals from the protections are connected to the trip output contact

PO3 (X100:15-19) via the corresponding Master Trip TRPPTRC1.

TRPPTRC provides the lockout/latching function, event generation and the trip

signal duration setting. If the lockout operation mode is selected, one binary input

can be reassigned to the RST_LKOUT input of the Master Trip to enable external

reset with a push button.

GUID-E4270342-93C0-4C06-B8F2-297E24A434FE V1 EN

Figure 30: On load tap changer control

The on load tap changer control functionality is provided with the OLATCC1

function. Both manual and automatic controlling of the on load tap changer is done

via OLATCC. The external push button controlling of the local tap changer can be

wired to binary inputs, BI3 (X110:5-6) for lower request and BI4 (X110:7-6) for

raise request. Also it is possible to set the function into parallel mode with

activating the BI5 (X110:8-9) input and to the automatic mode with BI6 (X110:10-9).




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The tap changer operating information can be connected to the binary input BI1

(X110:1-2).

OLATCC is blocked in automatic mode as a default setting if the LTC_BLOCK

input is active. The activation of the input fuse failure or current circuit failure isdetected.

The output commands are routed to the binary outputs and programmable LEDs.

The raise command is connected to PO2 (X100:8-9) and to the alarm LED 5. The

lower command is connected to PO1 (X100:6-7) and to the alarm LED 6.

The common alarm signal of OLATCC1 is connected to SO1 (X110:14-16) and to

the alarm LED 8.

GUID-61FA8F81-6848-4DBE-83B8-0750C33AA255 V1 EN

Figure 31: Circuit breaker control and interlocking

The ENA_CLOSE input, which enables the closing of the circuit breaker, is a

status of the Master Trip in the breaker control function block CBXCBR. The open

operation is always enabled.

If the ENA_CLOSE signal is completely removed from the breaker

control function block CBXCBR with PCM600, the function

assumes that the breaker close commands are allowed continuously.




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GUID-A6A3A186-BAC4-4609-B163-E13A00C528D6 V1 EN

Figure 32: Tap changer position indication

The tap changer position indication (TPOSSLTC1) can be made by using binary

coded information or an mA signal. It depends on the selected IED hardware. By

using the mA/RTD input module in the X130 slot, the tap changer position can be

connected as an mA signal. If the binary input output card is selected in the X130

slot, the position indication can be made with binary coded information.

When the mA/RTD card is used, the ambient temperature of the power transformer

is connected from first RTD channel to the thermal overload protection function.




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GUID-160A639B-35DA-446D-B176-D606EBE3FDB9 V1 EN

Figure 33: Common alarm/indication 1-5

The signal outputs from the IED are connected to give dedicated information on:

Start of any protection function SO1 (X100:10-12)

Operation (trip) of any protection function SO2 (X100:13-14)

Operation of overcurrent protection function SO2 (X110:17-19)

Operation of voltage protection function SO3 (X110:20-22)

Operation of thermal overload protection SO4 (X110:23-24)

TPGAPC are timers and used for setting the minimum pulse length for the outputs.

There are four generic timers (TPGAPC1..4) available in the IED. The remaining

ones not described in the functional diagram are available in PCM600 for

connection where applicable.




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58


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Section 4 Requirements for measurementtransformers

4.1 Current transformers4.1.1 Current transformer requirements for non-directionalovercurrent protection

For reliable and correct operation of the overcurrent protection, the CT has to bechosen carefully. The distortion of the secondary current of a saturated CT may

endanger the operation, selectivity, and co-ordination of protection. However,

when the CT is correctly selected, a fast and reliable short circuit protection can be

enabled.

The selection of a CT depends not only on the CT specifications but also on the

network fault current magnitude, desired protection objectives, and the actual CT

burden. The protection settings of the IED should be defined in accordance with

the CT performance as well as other factors.

4.1.1.1 Current transformer accuracy class and accuracy limit factorThe rated accuracy limit factor (Fn) is the ratio of the rated accuracy limit primary

current to the rated primary current. For example, a protective current transformer

of type 5P10 has the accuracy class 5P and the accuracy limit factor 10. For

protective current transformers, the accuracy class is designed by the highest

permissible percentage composite error at the rated accuracy limit primary current

prescribed for the accuracy class concerned, followed by the letter "P" (meaning

protection).

Table 21: L imits o f errors according to IEC 60044-1 for protect ive current transformersAccuracy class Current error at

rated primarycurrent (%)Phase displacement at rated primarycurrent

Composite error atrated accuracy limitprimary current (%)inutes centiradians

5P 1 60 1.8 5

10P 3 - - 10

The accuracy classes 5P and 10P are both suitable for non-directional overcurrent

protection. The 5P class provides a better accuracy. This should be noted also if

there are accuracy requirements for the metering functions (current metering,

power metering, and so on) of the IED.

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The CT accuracy primary limit current describes the highest fault current

magnitude at which the CT fulfils the specified accuracy. Beyond this level, the

secondary current of the CT is distorted and it might have severe effects on the

performance of the protection IED.

In practise, the actual accuracy limit factor (Fa) differs from the rated accuracy

limit factor (Fn) and is proportional to the ratio of the rated CT burden and the

actual CT burden.

The actual accuracy limit factor is calculated using the formula:

F FS S

S Sa n

in n

in

+

+

A071141 V1 EN

Fn the accuracy limit factor with the nominal external burden Sn

Sin the internal secondary burden of the CT

S the actual external burden

4.1.1.2 Non-directional overcurrent protectionThe current transformer selection

Non-directional overcurrent protection does not set high requirements on the

accuracy class or on the actual accuracy limit factor (Fa) of the CTs. It is, however,recommended to select a CT with Fa of at least 20.

The nominal primary current I1n should be chosen in such a way that the thermal

and dynamic strength of the current measuring input of the IED is not exceeded.

This is always fulfilled when

I1n > Ikmax / 100,

Ikmax is the highest fault current.

The saturation of the CT protects the measuring circuit and the current input of the

IED. For that reason, in practice, even a few times smaller nominal primary current

can be used than given by the formula.

Recommended start current settingsIf Ikmin is the lowest primary current at which the highest set overcurrent stage is to

operate, the start current should be set using the formula:

Current start value < 0.7 x (Ikmin / I1n)

I1n is the nominal primary current of the CT.

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The factor 0.7 takes into account the protection IED inaccuracy, current

transformer errors, and imperfections of the short circuit calculations.

The adequate performance of the CT should be checked when the setting of the

high set stage overcurrent protection is defined. The operate time delay caused bythe CT saturation is typically small enough when the overcurrent setting is

noticeably lower than Fa.

When defining the setting values for the low set stages, the saturation of the CT

does not need to be taken into account and the start current setting is simply

according to the formula.

Delay in operation caused by saturation of current transformersThe saturation of CT may cause a delayed IED operation. To ensure the time

selectivity, the delay must be taken into account when setting the operate times of

successive IEDs.

With definite time mode of operation, the saturation of CT may cause a delay that

is as long as the time the constant of the DC component of the fault current, when

the current is only slightly higher than the starting current. This depends on the

accuracy limit factor of the CT, on the remanence flux of the core of the CT, and

on the operate time setting.

With inverse time mode of operation, the delay should always be considered as

being as long as the time constant of the DC component.

With inverse time mode of operation and when the high-set stages are not used, the

AC component of the fault current should not saturate the CT less than 20 times thestarting current. Otherwise, the inverse operation time can be further prolonged.

Therefore, the accuracy limit factor Fa should be chosen using the formula:

Fa > 20*Current start value / I1n

The Current start value is the primary pickup current setting of the IED.

4.1.1.3 Example for non-directional overcurrent protectionThe following figure describes a typical medium voltage feeder. The protection isimplemented as three-stage definite time non-directional overcurrent protection.

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A071142 V1 EN

Figure 34: Example of three-stage overcurrent protection

The maximum three-phase fault current is 41.7 kA and the minimum three-phase

short circuit current is 22.8 kA. The actual accuracy limit factor of the CT is

calculated to be 59.

The start current setting for low-set stage (3I>) is selected to be about twice the

nominal current of the cable. The operate time is selected so that it is selective with

the next IED (not visible in the figure above). The settings for the high-set stage

and instantaneous stage are defined also so that grading is ensured with the

downstream protection. In addition, the start current settings have to be defined sothat the IED operates with the minimum fault current and it does not operate with

the maximum load current. The settings for all three stages are as in the figure above.

For the application point of view, the suitable setting for instantaneous stage (I>>>)

in this example is 3 500 A (5.83 x I2n). For the CT characteristics point of view, the

criteria given by the current transformer selection formula is fulfilled and also the

IED setting is considerably below the Fa. In this application, the CT rated burden

could have been selected much lower than 10 VA for economical reasons.

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Section 5 IED physical connections

5.1 Inputs5.1.1 Energizing inputs5.1.1.1 Phase currents

The IED can also be used in single or two-phase applications by

leaving one or two energizing inputs unoccupied. However, at leastterminals X120/7-8 must be connected.

T ab le 2 2: P ha se cu rre nt in pu ts inc lu de d in co nfigu ra tio n BTerminal DescriptionX120-7, 8 IL1

X120-9, 10 IL2

X120-11, 12 IL3

5.1.1.2 Residual currentT ab le 23: R esidu al cu rr

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ABB Reles de Frecuencia