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Software Vendors: J. J. Sanchez-Gasca, Jay Senthil, Jamie Weber, Pouya Zadkhast
EPRI: Deepak Ramasubramanian, Anish Gaikwad
PEACE®: Pouyan Pourbeik
WECC MVS Virtual MeetingAugust 24th – 27th, 2020
Benchmarking of REGC_B +
REEC_D modelsStatus update
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Test Protocol…Test number Description
Test 1
A-a/b
To test the voltage source interface, apply an X=0.005pu fault on
Bus 2 for 8 cycles
X10004-20004 = 0.106pu
B-a/b X10004-20004 = 0.206pu
C-a/b X10004-20004 = 0.406pu
D-a/b X10004-20004 = 0.706pu
Test 2 A-a/b X10004-20004 = 0.706pu, GENMVA = 100.0, H=2.5
▪ Preliminary model benchmarking of REGC_B + REEC_D beta models has been progressing.▪ Beta models developed in the software.▪ In Test 1 and Test 2, a represents use of REGC_A model while b represents use of REGC_B
Test Number Flag Setting DescriptionTest 3 PfFlag=1; VFlag = 0; QFlag=0;
Vcmpflag=1; PFlag=0Step change of 0.1pu in Vref0,
X10004-20004 = 0.106pu, GENMVA = 10000.0, H=5.0
Test 4Ai PfFlag=0; VFlag = 1; QFlag=1; Vcmpflag=0; PFlag=0
Step change of 0.2pu in QextX10004-20004 = 0.106pu, GENMVA =
10000.0, H=5.0
Test 4Aii PfFlag=0; VFlag = 1; QFlag=1; Vcmpflag=0; PFlag=0
Step change of 0.2pu in QextX10004-20004 = 0.706pu, GENMVA =
100.0, H=2.5
Test 4Bi PfFlag=0; VFlag = 1; QFlag=1; Vcmpflag=1; PFlag=0
Step change of 0.2pu in QextX10004-20004 = 0.106pu, GENMVA =
10000.0, H=5.0
Test 4Bii PfFlag=0; VFlag = 1; QFlag=1; Vcmpflag=1; PFlag=0
Step change of 0.2pu in QextX10004-20004 = 0.706pu, GENMVA =
100.0, H=2.5
Test 5i PfFlag=0; VFlag = 1; QFlag=1; Vcmpflag=1; PFlag=0
Step change of 0.2pu in Paux, X10004-20004 = 0.106pu, GENMVA =
10000.0, H=5.0Test 5ii PfFlag=0; VFlag = 1; QFlag=1;
Vcmpflag=1; PFlag=0Step change of 0.2pu in Paux,
X10004-20004 = 0.706pu, GENMVA = 100.0, H=2.5
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Summary of results and outcome…
▪ Overall, performance of both REGC_B and REEC_D across all four software platforms is consistent for all tests.
▪ Few points to be noted regarding these tests:
– The values of parameters chosen for the models are not necessarily representative of a realistic set. They were chosen to stress the models
– Due to various timers and voltage thresholds involved, numerical precision of the solvers can play a huge role in the dynamic behavior
– The behavior of the REGC_B model is dependent on the behavior of the network solution solver (which is slightly different in each software)
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Results of all tests
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Test1Aa
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Test1Ab
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Test1Ba
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Test1Bb
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Test1Ca
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Test1Cb
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Test1Da
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Test1Db
*Few minor modifications are still being carried out in PowerWorld’s representation of the model
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Test2Aa
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Test2Ab
*Few minor modifications are still being carried out in PowerWorld’s representation of the model
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Test3
*PowerWorld does not provide an option to introduce step change in Vref0
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Test4Ai
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Test4Aii
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Test4Bi
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Test4Bii
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Test5i
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Test5ii
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Together…Shaping the Future of Electricity
