How to add model "VTGTPAT"

asked 2021-07-06 20:39:36 -0500

penny870718 gravatar image

updated 2021-07-06 20:40:45 -0500

Hello everyone: Now I'm trying to simulate the renewable stored energy's low voltage ride through function. I use REGCAU1、REPCAU1、REECAU1 to simulated the renewable stored energy, and VTGTPAT to simulate low voltage ride through function. I want the renewable stored energy can still working for 1 sec when voltage drop to 0.5pu, but it doesn't work.

This is my python code. My enewable stored energy's bus number is "1", and bus code is "1", too.


Could someone tell me where is my problem, please. Sincerely, thanks.

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What do you mean with "it doesn't work"? Does model VTGTPAT trip the generator?

perolofl gravatar imageperolofl ( 2021-07-07 04:51:02 -0500 )edit

Oops!!! I find the mistake that I didn't notice. Thank you.

penny870718 gravatar imagepenny870718 ( 2021-07-07 07:08:16 -0500 )edit

Could I ask what is the different between "Relay pickup time" and "Breaker time" ?

penny870718 gravatar imagepenny870718 ( 2021-07-07 07:10:42 -0500 )edit

Relay pickup time is the time the voltage must be over/under the limit to activate trip signal to the breaker. Breaker time is the time the breaker needs to open.

perolofl gravatar imageperolofl ( 2021-07-08 03:41:35 -0500 )edit

For example, if VL=0.8pu, Pickup time=2sec, Breaker time=0.1sec, the relay will start to work when voltage below 0.8pu over 2sec, then the breaker will trip the generator after 0.1sec. Is this correct?

penny870718 gravatar imagepenny870718 ( 2021-07-08 04:44:30 -0500 )edit