The document describes the tests that will be performed for ...

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File: 3024661_8.docx; 7 Saved Date: 2020-02-25 11:55; Template: 1MRK3-490_AFL TEST SPECIFICATION.DOTX

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The document describes the tests that will be performed for the application functionPowerSwingDet_se95_B, ZMRPSB. All tests will be carried out using RTDS (Real Time DigitalSimulator) to evaluate the performance of application under dynamic system conditions.

Document Review Summary

Reviewer Role Reviewer Name Organization Review Date Review Status

Peer Review Bjorn Westman SEAPR 2019-05-xx No remarks

To be revised

Peer Review Sachin Srivastava IDC/PGGAP 2019-05-xx No remarks

To be revised

Product Application Specialist

Zoran Gajic SEAPR 2019-05-xx No remarks

To be revised


Hamdy Faramawy SEAPR 2019-05-xx No remarks

To be revised


Marco Kovacic SEAPR 2019-05-xx No remarks

To be revised

Product Manager Patrick Cost SEAPR 2019-05-xx No remarks

To be revised

Review comments are in Appendix Document Review comments

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test32 Acceptance recordResp. (division/department) Document id. Rev. Lang. Page



TABLE OF CONTENTS

1 Function introduction .............................................................................................. 3

1.1 Function name ............................................................................................. 31.2 Reference documents .................................................................................. 31.3 Abbreviations and definitions ........................................................................ 3

2 Function interfaces .................................................................................................. 3

2.1 Extra interface descriptions for test .............................................................. 4

3 Tests to be included in RTDS .................................................................................. 5

3.1 PLN Indonesia Network ................................................................................ 53.1.1 Testing of power swing unblocking with single transmission line model ........ 63.1.2 Testing of power swing unblocking with double transmission line model ...... 63.2 IEC 60255 – 121 power network .................................................................. 73.3 Special cases ............................................................................................. 11

4 Test SETUP ............................................................................................................ 11

4.1 System for test ........................................................................................... 114.2 Information of product to be used for test ................................................... 11

Appendix ........................................................................................................................ 11

A. Document Review comments ............................................................................... 11

TABLES

Table 1 - Function name ................................................................................................... 3Table 2 - Reference documents ........................................................................................ 3Table 3 - Abbreviations and definitions .............................................................................. 3Table 4 – Extra interface descriptions ............................................................................... 4Table 5 - Common parameters and settings .................................................................... 11

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1 Function introduction

Power swings may occur after disconnection of heavy loads or trip of big generation plants. Faultoccurrences may take place during power swings. At this condition, reliable phase selection isutmost important and therefore, distance measuring zones must be released for operation instead ofblocking.

So, new solution based on delta-based detection logic using Moving window Averaging (MA)principle has been implemented in an existing ZMRPSB (Power swing blocking) function to accountfor reliable phase selection for faults during power swings. As an overall, ZMRPSB applicationincludes both power swing blocking and unblocking features. Power swing unblocking feature can beenabled/disabled using a setting parameter.

1.1 Function name

Table 1 - Function name

Full name PowerSwingDet_se95_B, ZMRPSB

Component Impedance Protection

1.2 Reference documents

Documents that are of interest for understanding the function and for testing the function

Table 2 - Reference documents

Ref.no. Document identity Document title

1 Req. ID. 85248 Detecting faults during power swing

2 1MRG032254 Implementation Proposal for Power Swing Blocking andUnblocking

1.3 Abbreviations and definitions

Abbreviations and terms used in this document shall be described

Table 3 - Abbreviations and definitions

Term Definition

2 Function interfaces

Functional block diagram of ZMRPSB is shown below.

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Setting parameters are as follows:

2.1 Extra interface descriptions for test

Description of function inputs, for example analogue inputs, binary inputs, mA-inputs etc.

Table 4 – Extra interface descriptions

Interface Name Data type Description

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Interface Name Data type Description

3 Tests to be included in RTDS

The following tests should be run in RTDS.

3.1 PLN Indonesia Network

The power system model is shown below.

Pedan Bus Kediri Bus

ESPZSP1 ESK

ZSP0

Line 1

ZSK1

ZSK0

Line 2

A B

CB1 CB2

CB3 CB4

CT1

CVT1 CVT2

CT2

Load

500 kV Transmission Line

Load current

Shunt

Reactor

Tx Tx

Rx Rx

FB_2FB_1

F2_00 F2_50F2_100

F1_00

F1_10 F1_50 F1_64 F1_88

F1_100

L = 202 km

System details are as follows:

PEDAN KEDIRICT ratio 2000/1 A 2000/1 APT ratio 500 kV / 100 V 500 kV / 100 VFrequency 50 Hz

PEDAN Source (W)

ZSp

(Back power impedance at Pedan) Short Circuit Fault Levels

ZSP1 = 5.5 + j 35.5 WZSP0 = 14 + j 76.75 WIsc 3p = 7799.78 AIsc 1p = 4489.49 A

KEDIRI Source (W)ZS K (Back power impedance at Kediri) Short Circuit Fault Levels

ZSK1 = 5 + j 40.25 WZSK0 = 17.25 + j 82.75 WIsc 3p = 7340.44 AIsc 1p = 5396.41 A

Pedan - Kediri Transmission line impedances (W) (Line Length 202 km)

ZL (Line Impedance)

ZL1=5.221+j 58.406 W ZL0=36.421+j 175.219 WZL0m= 32.2319 +j 103.8959 W

Shunt Reactors at Pedan Line end

SR PED L1 & SR PED L2, each: 100 MVALoad Impedance at Pedan(MVA)

Load: (1141+ j181) MVA @ 500kV Nom.

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3.1.1 Testing of power swing unblocking with single transmission line model

To perform testing, CB3 and CB4 indicated in figure 1 will be in open state so that Line 2 isdisconnected. Following table shows the test coverage for different types of fault, various faultlocations during power swing and the slip frequency between two sources would be varied in therange of ±1.0 Hz with reference to nominal frequency of 50.0 Hz. Pre-fault load will be maintainedbefore initiation of power swing in the system.

Test Index

Fault Type

Fault Location

Phase-N Resistance

Phase-PhaseResistance

Flt Time (Cycle)

Load Change

Open Phase B (Kediri Breaker)

TransmissionLine Models

5101 AN F1_00 0.04 0.04 10 NO NO Single

5102 AB F1_00 0.04 0.04 10 NO NO Single

5103 ABN F1_00 0.04 0.04 10 NO NO Single

5104 ABC F1_00 0.04 0.04 10 NO NO Single

5105 AN F1_10 0.04 0.04 10 NO NO Single

5106 AB F1_10 0.04 0.04 10 NO NO Single

5107 ABN F1_10 0.04 0.04 10 NO NO Single

5108 ABC F1_10 0.04 0.04 10 NO NO Single

5109 AN F1_50 0.04 0.04 10 NO NO Single

5110 AB F1_50 0.04 0.04 10 NO NO Single

5111 ABN F1_50 0.04 0.04 10 NO NO Single

5112 ABC F1_50 0.04 0.04 10 NO NO Single

5113 AN F1_64 0.04 0.04 10 NO NO Single

5114 AB F1_64 0.04 0.04 10 NO NO Single

5115 ABN F1_64 0.04 0.04 10 NO NO Single

5116 ABC F1_64 0.04 0.04 10 NO NO Single

5117 AN F1_100 0.04 0.04 10 NO NO Single

5118 AB F1_100 0.04 0.04 10 NO NO Single

5119 ABN F1_100 0.04 0.04 10 NO NO Single

5120 ABC F1_100 0.04 0.04 10 NO NO Single

3.1.2 Testing of power swing unblocking with double transmission line model

Power system shown in Figure will be simulated to perform testing of power swing unblocking.Following tables shows the test coverage for different types of fault including evolving faults,various fault locations during power swing and the slip frequency between two sources would bevaried in the range of ±1.0 Hz with reference to nominal frequency of 50.0 Hz. Pre-fault load willbe maintained before initiation of power swing in the system.

TestIndex

Fault Type

Fault Location

Phase-N Resistance

Phase-Phase Resistance

Flt Time (Cycle)

Load Change



5301 AN F1_00 0.04 0.04 10 NO NO Double

5302 AB F1_00 0.04 0.04 10 NO NO Double

5303 ABN F1_00 0.04 0.04 10 NO NO Double

5304 ABC F1_00 0.04 0.04 10 NO NO Double

5305 AN F1_10 0.04 0.04 10 NO NO Double

5306 AB F1_10 0.04 0.04 10 NO NO Double

5307 ABN F1_10 0.04 0.04 10 NO NO Double

5308 ABC F1_10 0.04 0.04 10 NO NO Double

5309 AN F1_50 0.04 0.04 10 NO NO Double

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Evolving faults

3.2 IEC 60255 – 121 power network

The power system model based on IEC 60255 – 121 standard is shown below. Two relays,designated as Z<psb:1 and Z<psb:2, on both ends of Line 1 will be used for testing power swingunblocking function.

Source L Source R

Line 1

Line 2

Z<psb:1 Z<psb:2

5310 AB F1_50 0.04 0.04 10 NO NO Double

5311 ABN F1_50 0.04 0.04 10 NO NO Double

5312 ABC F1_50 0.04 0.04 10 NO NO Double

5313 AN F1_64 0.04 0.04 10 NO NO Double

5314 AB F1_64 0.04 0.04 10 NO NO Double

5315 ABN F1_64 0.04 0.04 10 NO NO Double

5316 ABC F1_64 0.04 0.04 10 NO NO Double

5317 AN F1_100 0.04 0.04 10 NO NO Double

5318 AB F1_100 0.04 0.04 10 NO NO Double

5319 ABN F1_100 0.04 0.04 10 NO NO Double

5320 ABC F1_100 0.04 0.04 10 NO NO Double

TestIndex

Fault Type

Fault Location

Phase-N Resistance

Phase-Phase Resistance

Flt Time (Cycle)

Load Change



EvolvingTime

(second)

5201 ANtoBN F1_36F1_36 0.04 0.04 10 NO NO Double 0.02

5202 ANtoABN F1_36F1_36 0.04 0.04 10 NO NO Double 0.02



5205 ANtoBN F2_100FB_2 0.04 0.04 10 NO NO Double 0.02

5206 ANtoABN F2_100FB_2 0.04 0.04 10 NO NO Double 0.02

5207 ANtoBN FB_1F2_00 0.04 0.04 10 NO NO Double 0.02

5208 ANtoABN FB_1F2_00 0.04 0.04 10 NO NO Double 0.02









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System details are as follows:

CT ratio 1200/1 APT ratio 400 kV / 100 VFrequency 50 Hz, 60 Hz

Transmission line data:

Z1L= Z2L= (0.03184 + j0.3636) Ω/km

Z0L = (0.1274 + j1.4552) Ω /km

Line length = 100.0 km and 5.0 km

Long line testing: (Both end relays to be tested)

SIR L SIR R Source impedance (L) in primary ohm Line impedance reach (80% of linelength) in primary ohm

Z1S (ohm) Z0S (ohm) Z1reach (ohm) Z0reach (ohm)

0.2 5.0 0.51 + j5.82 2.04 + j23.28 2.55 + j29.09 10.19 + j116.42

0.5 0.8 1.27 + j14.54 5.1 + j58.21 2.55 + j29.09 10.19 + j116.42

Short line testing: (Both end relays to be tested)

SIR L SIR R Source impedance (right) in primary ohm

Line impedance reach (80% of linelength) in primary ohm

Z1S (ohm) Z0S (ohm) Z1reach (ohm) Z0reach (ohm)

5.0 30.0 3.81 + j43.63 15.3 + j174.6 0.127 + j1.454 0.51 + j5.82

Test scenarios to be considered while testing for long and short lines:

· Slip frequency variation of +/- (0.2 Hz, 1 Hz, 5 Hz) of nominal frequency at 50 Hz, 60 Hz

· Testing with heavily loaded and no-loaded (i.e. import and export conditions are coveredwhen two relays on Line 1 are used)

· Point of fault inception in swing period (Near swing centre, ¼th of swing, peak (1/2 ofswing)

· Symmetrical and asymmetrical faults

o For +0.2 Hz slip frequency - 11 types of faults (L1E, L2E, L3E, L1L2E, L2L3E,L3L1E, L1L2, L2L3, L3L1, L1L2L3E and L1L2L3)

o For other slip frequency - 4 types of faults (L1E, L2L3E, L3L1, and L1L2L3)

· Fault inception angles – 0 and 90 deg

· Fault location – 0.5%, 20%, 36%, 64%, 80% and 99.5%

· Fault resistance variation (0.0, 10.0 and 50.0 ohm for earth faults, 0.0 and 5.0 ohms forphase faults)

· Fault duration is transient and consider 5 cycles fault duration and clear the faultthereafter

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Evolving faults (only one line effected):

Evolving faults (both lines effected):

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3.3 Special cases

In IEC network,

· protected line L2 is switched off from the network after power swing period and thenswitches onto fault

· When protected line is opened due to phase-to-earth fault, create a fault in other twophases during 1-pole auto-reclosing period

4 Test SETUP

4.1 System for test

It will be specified in RTDS test report document.

4.2 Information of product to be used for test

ProductVer: 2.2.3.300

Product Variant: REL670

4.2.1 Parameters common to all tests

Table 5 - Common parameters and settings

Appendix

A. Document Review comments

Rev. ind.

Page (P)Chapt (C) Description Issuer C

lassification

Decision

A Page 5 Chapt. 3.1.1, 3.1.2

Consider slip frequency of 1.0 Hz onlyfor PLN network and no need to test inthe range of +5 Hz to -10 Hz slipfrequency.

HF,SS

I Ok. Slip frequency of 1.0 Hz will onlybe considered for PLN network whileperforming RTDS testing.

A Page 7 Chapt. 3.2

Consider short line length as 5.0 kminstead of 20.0 km.

HF,SS

I Ok.

A Page 7 Chapt. 3.2

For long line, limit SIRs to 0.2 and 5.0and for short line, limit SIRs to 5.0 and30.0

HF,SS,HJ

I Ok.

A Page 7 Chapt. 3.2

For long line, consider (SIRA, SIRB)à (0.2, 5.0), (5, 0.2) and (0.5 and 0.8)instead of (0.1, 1.0), (1.0,1.0),(5.0,1.0)

HF,SS,HJ

I Ok.

A Page 7Chapt.3.2

For short line, consider (SIRA, SIRB)à (5, 30.0), and (30 and 5)

HF,SS,HJ

I Ok.

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A Page 8Chapt.3.2

Limit slip frequency variation to ±(0.2Hz, 1.0 Hz and 5.0 Hz) instead of±10% with 0.5 Hz variation at nominalfrequency of 50 and 60 Hz

HF,SS,HJ

I Ok.

A Page 8Chapt.3.2

Point of fault inception in swing period(Near swing Centre, ¼ th of swing,peak (1/2 of swing), 3/4th swingperiods) à may not be possible to do it

HF,HJ

? If possible, do it.

A Page 8Chapt.3.2

Consider all types of faults i.e. 11 faulttypes

HF M2 Ok.

A Page 8Chapt.3.2

Fault inception angles 0, 30, 60, 90,135 deg à may not be possible to doit

HF,HJ

? If possible, do it.

A Page 8Chapt.3.2

For PE faults, consider faultresistances as 0.0, 10.0 and 50.0Ohm and for PP faults, 0.0 and 5.0ohm and not needed to test in therange of (0-50) ohms

SS I Ok.

A Page 8Chapt.3.2

Fault duration can be considered as atransient and upto 5 cycles instead of5 cycles and permanent

HF,SS

I Ok.

A Page 7Chapt.3.2

IEC network is to be modified to showtwo relays under test on Line 1 toreduce runtime of RTDS testing.

HF,SS,HJ

? Ok.

A Page 8Chapt.3.2

For long line, consider (SIRA, SIRB)à (0.2, 5.0) and (0.5 and 0.8) afterconsidering two relays for testing onLine 1

HF,SS,HJ

? Ok.

A Page 8Chapt.3.2

For short line, consider (SIRA, SIRB)à (5.0, 30.0) only when two relaysare used for testing on Line 1

HF,SS,HJ

? Ok.

A Page 8Chapt.3.2

No need to consider point of faultinception at 3/4th swing period

HF,SS,HJ

M1 Ok.

A Page 8Chapt.3.2

No need to test all types of fault forcomplete test speicifation. So,consider symmetrical andasymmetrical faults :

· For +0.2 Hz slip frequency -11 types of faults (L1E, L2E,L3E, L1L2E, L2L3E, L3L1E,L1L2, L2L3, L3L1, L1L2L3Eand L1L2L3)

· For other slip frequency - 4types of faults (L1E, L2L3E,L3L1, and L1L2L3)

HF,SS,HJ

M1 Ok.

A Page 8Chapt.3.2

Fault inception angle should be limitedto 0 and 90 deg instead

HF,SS,HJ

? Ok.

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A Page 8Chapt.3.2

Consider fault location – 0.5%, 20%,36%, 64%, 80% and 99.5% instead of0.5%, 20%, 50%, 64%, 80% and 95%.So, performance of two relays can beevaluated.

HF,SS,HJ

M1 Ok.

Classification:· N = New

· M1 = Major remark

· M2 = Minor remark

· I = Improvement, suggestion

· ? = Question

Decision:· NA = No action

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REVISION

Rev.ind. Page (P)

Chapt. (C)

Description

Date

Dept./Name

A All Initial Document 2019/05/09IDC/PGGAP/SureshMaturu

A Page 7 and 8 Chapt. 3.2

1st round review comments updated and captured in review table

2019/05/17IDC/PGGAP/SureshMaturu

A

Page 7 and 8 Chapt. 3.2

2 nd round review comments updated 2019/05/27IDC/PGGAP/SureshMaturu