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Hi, I have a 5 bus system with one infinite machine and one type 4 wind farm equivalent generator with WT4G1 and WT4E1 models. I am using the PLBVFU1 model for the infinite machine and I also have created a .plb file to apply a step change at 1 second in the .plb file to see the response of WT4E1. There is a GSU transformer (0.8:35kV) for the wind turbine and a 35 kV to 345 kV transformer to connect to the grid. I don't see any change in my MVAR or voltage after 1 second which I was expecting to see from the playback file. Here is the .plb file content:

1,1.03,60,0,0 1.0 ,0.95,60,0,0 2 ,0.95,60,0,0

Does anyone have any idea why .plb file is not working? I couldn't find PLBVFU1 in the Models.pdf document for PSSE 34.0.1. Does it mean I don't have playback in my PSS/E library? Thank you for the help!