How to describe a load with time-varying active power by Python in PSS/E simulation?

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How to describe a load with time-varying active power by Python in PSS/E simulation? I want to make a test,that I want some of the load,may be one of the load that its active power is time varying in the dynamic simulation,How can I do ,Could you tell me how to write the Python script for this PSS/E simulation? Thanks a lot!

Bob

asked 2013-09-16 20:38:54 -0500

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How exactly is your load varying with time?

EBahr (2013-09-17 12:46:16 -0500) edit

I want to decribe wind machine as a time-varying load,is that OK?

Bob (2013-09-25 20:35:35 -0500) edit

Dynamic studies are normally on the order of 10-30 seconds long. Do people normally alter system conditions like that during the simulation?

JervisW (2013-09-28 02:56:07 -0500) edit

Yes, one example is load shedding.

yfwing (2013-09-29 12:11:58 -0500) edit

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Depends on the characteristic of the time-varying load, there could be two ways to implement in dynamics simulation. If it is a very simple piece-wise loads (active power vs time), then just altr the load at specific time. If the load is a complex function of time, then the best way is to write a user defined model for the load.

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yfwing

answered 2013-09-28 01:08:06 -0500

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Mr yfwing what do u mean in "complex function of time"?

in my case i need to vary the demand load through the day depending on consumption>> is this considered as your description "complex load" ?

Mr. @yfwing

Eng. HAMZA

answered 2014-04-09 21:41:18 -0500

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"to vary the load demand through the day" would not be suitable for dynamic simulation (10 to 30 sec time-domain simulation). It seems yours is a steady-state process with load values being updated every so often for a day. BTW Some wind models allows simulations of gust-wind periods.

jconto (2014-04-09 23:23:27 -0500) edit

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How to describe a load with time-varying active power by Python in PSS/E simulation? edit

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