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Switched shunt

asked 2020-04-21 05:59:44 -0500

EM gravatar image

Is it possible somehow to plot in dynamics simulation curve of switched shunt reactive power? Model is CSSCST

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VAR(L+2) for this model can be included in your output simulation channels. find the VAR number for this VAR(L+2) of the model via DOCU/DLST and add it as a channel. This is the admittance (Y) of the switched shunt and you may want to do something with it in order to plot the reactive power.

ffl gravatar imageffl ( 2020-04-21 06:48:37 -0500 )edit

I have problem to add VAR(l+2) to plot channel. Can you give me some points?

EM gravatar imageEM ( 2020-04-22 03:06:26 -0500 )edit

What specific problem is it? I agree with perolofl to plot the reactive power by method 2 described below.

ffl gravatar imageffl ( 2020-04-22 10:20:02 -0500 )edit

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answered 2020-04-21 10:31:33 -0500

perolofl gravatar image

As ffl wrote in his comment you can plot the admittance in VAR(L+2).

Reactive power Q can be plotted in two ways:

  1. Multiply the admittance with the voltage in square when plotting.
  2. Split the bus and move the switched shunt to the new bus. Add MW & Mvar channels for the zero impedance line inserted between the new bus and the original bus.

I prefer alternative 2.

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thanks! I use method 2. But it when plotting, curve is showing near zero MVAr, but in static mode switched shunt gives about 65 MVar.

EM gravatar imageEM ( 2020-04-28 05:30:23 -0500 )edit

Is the shunt Mvar flowing on the monitored line? Did you add the correct line channel? You did something wrong.

perolofl gravatar imageperolofl ( 2020-04-28 09:07:33 -0500 )edit

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Asked: 2020-04-21 05:59:44 -0500

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Last updated: Apr 21 '20