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Has anyone checked the damping ratios from the channels in the .out files?

asked 2021-09-24 12:49:40 -0600

pSguy gravatar image

updated 2021-09-24 12:52:29 -0600

ERCOT's Planning Guide says to "ensure that power oscillation within the range of 0.2 Hz to 2 Hz decays with a minimum 3% damping ratio." (S 4.1.1.6) Does anyone know how to check for the freq. range above and the damping ratio for a large number of .out files containing many channels? I'm using PSS/E.

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answered 2021-10-21 15:22:47 -0600

jconto gravatar image

updated 2021-10-24 18:26:48 -0600

Check the post "Channels - tool to process outs files"

The channels tool was developed in python 2.7 and tested with PSSe v 33 and v.34. Instructions in the readme file will show how to run it with the demo data set included.

Channels has a function to evaluate the damping ratio of power system signals (for a demo, use the file "chan_Pe_dmp.ini" as input to channels"). For a list of OUT files and a list of channels, it uses Matrix Pencil algorithms to calculate the damping ratio of each signal, producing a CSV file with output data and plots of original and re-composed signals.

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answered 2021-10-23 20:08:09 -0600

likethevegetable gravatar image

updated 2021-10-23 20:14:49 -0600

Sure have and sure do.

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answered 2021-09-27 00:40:16 -0600

cresg gravatar image

updated 2021-09-27 00:40:37 -0600

You can use PSSPLT to perform modal analysis. Please read PSSPLT Program Manual, Ch. 4.13.3 for a detailed explanation.

For multiple .out files, you can create .idv file inside PSSPLT and run it in Python.

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Asked: 2021-09-24 12:49:40 -0600

Seen: 236 times

Last updated: Oct 24