Communication in Substations: IEC61850 Energy … networkof innovation EA IM2, März.2005 1 Power Transmission and Distribution Power Automation Progress. It‘sthatsimple. Communication

Global network of innovation

EA IM2, März.2005 1

Power Transmission and Distribution

Power AutomationProgress. It‘s that simple.

Communication in Substations:IEC61850

Clemens Hoga Siemens PTD

Global network of innovationGlobal network of innovation

Energy Automation

IEC 61850 – Impacts on protection and automation devices

Clemens Hoga PTD EA IM2

PTD EA IM2, 2005-03 2


Today‘s zoo of protocols

PTD EA IM2, 2005-03 3


The world has changed

IEC 61850 One World

One Technology One Standard

PTD EA IM2, 2005-03 4


IEC 61850, just another way of transferring data?What‘s different, what‘s new?

„GOOSE?“

LOGICAL NODES?

SUBSTATIONCONFIGURATIONLANGUAGE?

PTD EA IM2, 2005-03 5


First of all: Does IEC 61850 require totally new devices?

• IEC 60870-5-103 + VDEW Extension

• Modbus• DNP 3.0

• Profibus DP• Profibus FMS

• IEC 61850

NO, modular concepts offer IEC61850 expandability

But what is the real impact on the devices?

PTD EA IM2, 2005-03 6


Impacts on devices: Overview

Set the Ethernet

Note the LOGICAL NODE

Use the GOOSE

Engineering shrinks

Test is best

Conclusion

Face the Use Case, Outlook

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Get used to Ethernet and IP

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Get your IED connected to Ethernet

Parallel running services:

Data-highway:

100 MBit/sEthernet

IEC 61850Info – Report

Parameter Setting

IEC 61850GOOSE

Web - Monitor

IEC 61850time sync SNTP

Port B

Electrical Ethernet moduleElectrical Ethernet module

Optical moduleOptical module

PTD EA IM2, 2005-03 9


Provide Redundancy

Bay 1

62,5µ or 50µ FO switch

Station Controller

Bay 2

FOFOCUCU

device 1

device 2

device 4device 3

Multimode fiber Multimode fiber

PatchPatch--cablecable

StandbyStandby

InterfaceInterfaceelectricalelectrical

MobileMobileaccessaccess

WirelessWirelessLANLAN

PTD EA IM2, 2005-03 10


Connect the IED to the 100MBit/s Fat Communication Pipe

Best Performance by 100Mbit/s

Multiple Services using one connection

Time Sync supported

Redundancy Strategies required

PTD EA IM2, 2005-03 11


Dealing with Logical Nodes

IEC

618

50 S

yste

m

IEC 61850recent

Mapping

IEC 61850server interface

specified byPICS, MICS

PIXIT

Internal functions

example:to fulfill mandatoryIEC 61850-modelsinternal signals haveto be added/modified

PTD EA IM2, 2005-03 12


Get familiar with the Logical Node System

Composed to real devicesPool of about 90 Logical Nodes

LN XCBR

LN CSWI

LN PTOC

LN CSWI

LN PDIS

IED Ae.g.7SA6

LN CSWI

LN PTOC

IED Be.g.7SJ6

PTD EA IM2, 2005-03 13


Modelling Example

Example: Bay unit with time over current protection, control, measurement

IED3

IED1

Phys. device name

IED2

IED1

PTOC

GGIO

CSWI

MMXU

LD EXT: Siemens-specific indications

LD CTRL: Switch Control

LD MEAS: Measurement

Unit

LD PROT: Time Over Current

TCTR

Non conventional Current

Transducer

XCBRLD CTRL: Circuit

Breaker

IED - Intelligent Electronic Device (each device with a communication interface)

PTD EA IM2, 2005-03 14


IEC 61850 server interface definition

Each IED has to be mapped toan IEC 61850 server interface

The interface is described by

MICS Model Implementation Conformance Statement

PICS Protocol Implementation Conformance Statement

PIXIT Protocol Implementation Extra Information

ICD-File IED Configuration LanguageThe self description file forthe Substation Configuration Language

PTD EA IM2, 2005-03 15


Use the GOOSE

GOOSE transmitterDevice X

GOOSE receiverdevice Y

GOOSE receiverdevice Z

A device sends information by multicasting. Only devices which are subscribers receive this message.In the example, Receiver Z receives the message. Receiver Y is not a subscriber.

EXAMPLE:

GO

OSE

mes

sage

e.ge.g..5050--1 1 pickedpicked up c/gup c/g

Ethe

rnet

GOOSE (Generic Object Oriented Substation Event)

PTD EA IM2, 2005-03 16


Example on IEC 61850–GOOSETopology of Ethernet Station-bus

IEC61850 station

outgoing feeders

62,5µ or 50µ optical fibreOSM-switch

DIGSI 4 Central device withtime synchronisation

incomingfeeder

opticaloptical

electricalelectrical

OC-Feed1

OC-Feed2

OC-Feed3OC-Feed4

ANSIANSI5050--1 1 pickedpicked upupIECIECI> I> pickedpicked upup

OCOC--Feed1Feed15050--1 1 pickedpicked upup-- F1F1

OCOC--Feed2Feed25050--1 1 pickedpicked upup––F2F2 OCOC--Feed3Feed3

5050--1 1 pickedpicked upup-- F3F3

OC-Feed4ANSI>Block 50-2IEC>I>> Block

outgoing feeder

PTD EA IM2, 2005-03 17


Interlocking at local operation, recent solution

DIGSI 4

Localoperation

Interlocking byComputing in theSubstation Controller

Enab

led?

Interlocking

InformationEnab

led!

IEC61850 Stations - Bus

PTD EA IM2, 2005-03 18


GOOSE

Application changed by using GOOSE

DIGSI 4

IEC61850 Stations - Bus

Localoperation

Interlocking Control by IED itself

Benefits:+ Speed+ Security+ Lower expenditure

Change whereautomation islocated

PTD EA IM2, 2005-03 19


Impact of Use of GOOSE

GOOSE shifts the location of computing, IEDshave to prepare themselves

GOOSE requires additional mechanisms in Engineering

GOOSE improves system security by preventingformer bottlenecks due to one centralsubstation controller

GOOSE may lead to devices with fewer I/Os

GOOSE leads to new, innovative applications

PTD EA IM2, 2005-03 20


Engineering-process in the past

Typ devicedescriptionVendor B

Device Configuration

Vendor B

Typ devicedescriptionVendor A


Vendor A

Manual Exchange of IED Description A & B


Vendor A


Vendor B

Vendor specifictool

Project specificprocess

PTD EA IM2, 2005-03 21


Engineering - Process acc. IEC 61850

devicelibraries

System Configuration

Vendor B


Vendor BSystem

Description


Vendor A

Device descriptionVendor A

Device descriptionVendor B


Vendor A

devicelibraries


Vendor BDevice descriptionVendor X

Standardized file

Vendor-specific tool

PTD EA IM2, 2005-03 22


Engineering Process according to IEC 61850: Today‘s Solution

Devicedescription

Manufacturer X

System description

System configuration

Siprotecdevicelibrary

Device configuration

Manufacturer X

Device configuration

SIPROTEC

Basic data

Station controller

PTD EA IM2, 2005-03 23


Impact on Engineering

IEC 61850 clearly offers big benefits in terms of interoperability

The Substation Configuration Language SCLoffers the basis for it

The SCL/XML is not the user interface; itworks behind the scenes

Proper Engineering tools may make use ofe.g self discovery mechanisms

Future developments will show further benefits

PTD EA IM2, 2005-03 24


GOOSE Replaces Binary I/O

Direct bus connection limits relay test efforts

Substation Network

GOOSETest Set

Protection Relay

Hard -wiredAnalog Signals

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Testing by accreddited test labs ensuresinteroperability

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Impact of testing

IEC 61850 Part 10 specifies the test cases for type conformance testing

The UCAinternational users groupprovides accreditation to labs conformant toIEC 61850

Moreover, the UCAinternational ensures both long-term improvement and technicalprogress by running the„Tissues Process“

PTD EA IM2, 2005-03 27


What is required for IEC 61850; Conclusion

Ethernet-Hardware

Computing power for the communication stack

Mapping Logical Nodes to internal functions

Possible new localization of functions(Use the GOOSE)

Engineering Tool providing SCL-capabilities

Fulfill the test spec of IEC 61850 part 10 and the respective conformance tests

PTD EA IM2, 2005-03 28


Bay Units forGeneral Reports

IEC 60870-5-101

Station Bus Ethernet TCP/IP - IEC61850

Station Bus Ethernet TCP/IP -IEC61850

Switchgear - 110kV

Substation ControllerSystem Visualization

Station

ControlControl CentreCentre

Switchgear - 25/6kV Switchgear - 6kV

IEC 60870-5-101

4 RTU

HV Feeder Main Switchgear MV MV Distribution

Operator StationOffice-PC

10kmConnection to TransformerMonitoring



A real existing example

PTD EA IM2, 2005-03 29


OUTLOOK

IEC 61850 applications are in operation

Lots of benefits are emerging today

Additional benefits are expected

Future developments head towards theprocess bus and harmonization of communication between theControl Center and the substation

Documents

Communication in Substations: IEC61850 Energy … networkof innovation EA IM2, März.2005 1 Power Transmission and Distribution Power Automation Progress. It‘sthatsimple. Communication