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Question

The capacity of a static VAR compensator to be  installed at a bush with ± 5%  

voltage fluctuations is , if the short circuit capacity is 7000 MVA.



A.

+ 7350 MVAR

B.

+ 6650 MVAR


C.

+ 1400 MVAR

D.

+ 350 MVAR

Answer ( Option D)

+ 350 MVAR

Solution

% V fluctuations= + 5%  , SCC = 7000MVA   + 5% of 7000 MVA = + 350MVA 

We need + 350MVA   which is produced by fluctuation.

  SVC capacity = + 350MVA . 

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