Hello dear friends

I work on power system stability. I have designed a power system stabilizer using fuzzy logic for damping of low frequency oscillation. Because it is difficult to directly measure the change in rotor speed (Dw), it is suitable to calculate the Dw from the change in the electrical power (DPe) output. In my test system there are a few faults for study of effectiveness of my PSS.

The electrical output power is clear before of fault (from output synchronous generator model in matlab simulink). Now, I want to determine (DPe) that is different in electrical output power before and after the fault in matlab. How can I obtain this signal for my input of PSS?

Any comment will be appreciated

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