In PSS®E version 36.2, if you are encountering issues with plotting frequency in absolute terms rather than per unit, it could be due to how the software is configured or how the frequency plotting function is set up. To display frequency in absolute terms (e.g., 50 Hz), you may need to adjust the settings or the plotting function. Here are some steps you can try:
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Check the Plot Settings: Ensure that the plot settings are configured to display frequency in Hertz. Go to the plot setup menu and look for any options related to frequency display.
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Modify the Output: If the older method 50*(1+a) worked, try to use a similar expression to convert the per unit value back into Hertz. You can apply this conversion in the plot setup to adjust the scale.
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Consult the Manual or Help Files: Review the PSS®E Xplore 36.2 documentation or help files for any updates or changes in frequency plotting functions. There might be new methods introduced in this version.
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Contact Support: If the problem persists, consider reaching out to the software support team or forums for guidance on this specific version.
These steps should help you configure your plot to display frequency in absolute Hertz instead of per unit.