Revision history  [back]

Perform frequency scan using Thevenin impedance

Hello everyone,

My question here lies on the method to change the parameters corresponding to the interested frequency:

1. Export to raw then change parameters corresponding to the interested frequency in raw. Then import to PSSE and get Thevenin impedance.
2. Change the parameters in PSSE, then get Thevenin impedance.

I have tried the 1st one, but it took about 20s to execute a scan (one N-0 loadflow case of about 500 buses, scan in range of 5 to 50, step 0.5). It seems forever when you want to do N-1 and N-1-1 analysis.

Which way is better, in your opinion? Do you have another way to do the job? Anyone has a benmark or test system to validate the results?