ABB REC 670 Synchrocheck

8/10/2019 ABB REC 670 Synchrocheck

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1

AB

B

PowerTechnologiesAB,

2005

2005-03-04 Substation Automation Products Training

Substation

Automation Products

Training

Control IED

REC 670

Synchrocheck


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B


2005


Contents

Synchrocheck and energizing check

Application Functionality

Voltage selection

Function block

Settings

Interaction with apparatus control


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The main purpose of the SCfunction is to provide control

of the CB closing in order toprevent closing if conditionsfor synchronism are not

detected.

Synchrocheck (SC/VC) Application


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Synchronism Check

, f, U and Uhigh

are within set values

SC/VC

25

AB

ILoad

UA UB

UAL

d

dU

Icap


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The main purpose of the ECfunction is to facilitate the

controlled re-connection ofdisconnected lines andbusses to energized lines and

busses.

Energizing Check Application


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Energizing Check

The dead line and Live

bus conditions arechecked.

Uhigh and Ulow areverified

SC/VC

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AB

ILoad

UA UB

Ulow

Uhigh

Inductive and Capacitive

charging of dead line


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Synchrocheck Voltage selection

SYN1SYN1 SYN2

1 U 1 U1 U

IED

3 U

1 U

3 U

B2QB1Q

UB1 UB2

ULN1

ULN1

UB1 UB2

LN1Q

Single Breaker Double Breaker

IED


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SYN1

IED 1

SYN1

IED 2

SYN1

IED 3

1 U

1 U3 U

3 U

SYN1

IED

SYN2

3 U

1 U

1 U

1 U

1 U

1 U

1 U

1 U

B2Q

UB1UB2

ULN1

LN1Q

LN2Q

ULN2 UB2

B1Q


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SYN1

REC670

SYN2

SYN3

3 U

3 U

1 U

1 U


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Synchrocheck Function block

Fuse fail on sel fuse

Information that the voltageis included in the

synchrocheck

Information that the

conditions for voltage, diff

voltage phase angle diff etc

are out of limit

Conditions for AR

Conditions for Man close

Test conditions fulfilled

DS Bus 1 at DB arrangement

DS Bus 2 at DB arrangement

DS Line at 1 1/2 arrangement

DS alt Line at 1 1/2 arrangement

Bus1 VT Fuse fail alt. OK

Bus2 VT Fuse fail alt. OK

Line 1 VT Fuse fail alt. OK

Line 2 VT Fuse fail alt. OK

Block inputs

Analogue inputs

Test mode inputs


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Synchrocheck CAP-config


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13/2113

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Synchrocheck PST

Selection of measuring phase, wich can be a

single-phase or phase-phase voltage

Type of voltage selection

Base voltage

Compensation for a phase shift caused by a

line transformer between the twomeasurement points for bus voltage and line

voltage.

Uratio=bus voltage/l ine voltage

Compensation for voltage difference


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Synchrocheck - PST

Setting for voltage difference between line andbus

The frequency difference level

The phase angle difference level

Voltage level in relation to bus/line network

voltage

Timer delay settings is to ensure that the

synchro check conditions remains constant


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Synchrocheck - PST

Energizing directions

Voltage level in relation to bus/line network

voltage

Timer delay settings is to ensure that the

energ. check conditions remains constant

Manual closing is enabled when DBDL

conditions are detected

Block the closing when the voltage is above

the set value


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REC670 can handle up to6 SC functions!

Synchrocheck


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Synchrocheck & Apparatus Control

SynchroCheck

OR

SCSWI SXCBR

CLOSE

SYNC_OK

EXE_CL

Synchronizingfunction

.

SY_INPRO

START_SY

CLOSE CB

SECRSYN

Interaction with synchrocheck and synchronizing functions


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Exercise time

Exercise 10

Synchrocheck and energizing check


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Documents

ABB REC 670 Synchrocheck