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| 2022-07-27 07:29:14 -0500 | asked a question | REGCA1 generator and branch VAR mismatch Hi, This is a problem in PSSE V34 dynamic simulation. I have a PV farm at bus 1. The PV farm is modeled by REPCA1+REECA1+REGCA1. A transformer branch connect bus 1 to bus 2. In the initial condition, Qpvfarm (the MVAR output of the PV farm)=Qbranch (branch MVAR flow from bus1 to bus2), which is okay. I applied a contingency to change a STATCOM output of the system (the STATCOM is not related to PV farm). After the contigency, Qpvfarm is significantly different from Qbranch, which seems to be a bug of the software. A hint for this mismatch, my PV farm has 0 MVAR output, should not have the capability to regulate its terminal voltage. But the resulting terminal voltage after contingency is a ramping pattern (should be a step in this case). Did anyone meet the same problem? Or have any idea for this? Thanks |
| 2022-07-27 06:03:35 -0500 | answered a question | REGCA1 dynamic behaviour - bug I meet exactly the same problem. The VAR output of REGCA1 is zero, but the model is still trying to regulate its terminal voltage. Please let me know if you solved the problem |
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