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LVRT for PV plant reactive response

asked 2020-05-27 18:33:17 -0500

anonymous user


Hi , I am performing LVRT test for PV plant. Response of Reactive power starting from 0 at voltage 1 pu and MVAR increase when voltage decrease for period of 15 sec . But after LVRT duration when voltage settle down at 0.95 reactive power reach at 0 value . technically it should be some positive value greater than 0 . Can some one help me to understand the reason and suggest any solution .

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answered 2020-05-28 10:03:30 -0500

jconto gravatar image

It seems that in the voltage/Q control model is set to power factor (=1 for Q=0). Set it to voltage or Q control. If you can, post the dyr data.

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Thanks Jconto, can you share your email id. Actually here i cannot send image because of restriction of >200 point. my email id-

pk gravatar imagepk ( 2020-05-28 12:30:29 -0500 )edit

Did you check if model is in power factor mode? BTW, dyre data is text.

jconto gravatar imagejconto ( 2020-05-28 13:09:30 -0500 )edit

yes, i checked it.model is in voltage control mode.

pk gravatar imagepk ( 2020-05-28 13:16:55 -0500 )edit

what should be Vsch bus voltage in LVRT test Vsch -0.98 inveter mvar = -80 and after lvrt duration inverter mvar = +80 mvar // vsch =1.001 inverter mvar =- 0.080 and after lvrt duration inverter mvar = -0.076// Vsch = 1.01 inver mvar = +80 and after LVRT inverter mvar = +8

pk gravatar imagepk ( 2020-05-28 13:26:43 -0500 )edit

my question is - what is acceptable value of Vsh for LVRT test , and is it require to check the model in all the 3 condition to pass by ERCOT.?

pk gravatar imagepk ( 2020-05-28 13:27:29 -0500 )edit

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Asked: 2020-05-27 18:33:17 -0500

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Last updated: May 28