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Question

Installation of capacitors at suitable locations and of optimum size in a distribution 

 system results in

 1. Improved voltage regulation

 2. Reduction in distribution power losses

 3. Reduction of kVA rating of distribution transformers.

 Select the correct answer using the codes given below :


A.

1 alone 

B.

1 and 2


C.

1, 2 and 3

D.

3 alone

Answer ( Option C)

1, 2 and 3

Solution

Shunt capacitors are used in a distribution system for improving voltage regulation, reduction in distribution power losses, reduction of kVA rating of distribution transformers.

kW = kVA

The improved power factor reduces the kVA drawn from the supply.

 As 

 For fixed    and 

         

So, the Dower losses are reduced and the efficiency is increased. The smaller voltage drop in the line results in good voltage regulation. Thus, shunt capacitors regulated the voltage and reactive power flows at the points where they are installed.  


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