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bhavinraval_08
Active Contributor

Join Date: Jun 2009
Location: gujarat, India
Posts: 17

Short Circuit and Voltage Profile

03/08/2010 3:11 AM

I have a BUS which having one I/C and three O/G feeder. Now if any one of the O/G feeder have a fault. How i calculate voltage on other two feeder-what is voltage dip in healty feeder?
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: Short circuit and Voltage profile

03/08/2010 3:33 AM

It depends upon how long the protective device takes to clear the fault, how much load there was on the wto healthy and faulty outgoing feeders, the size and the length of the incoming feeder, etc., etc.

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#2

Re: Short circuit and Voltage profile

03/08/2010 5:19 AM

If i want to manually calculate voltage variation, not considering effect of relay. How this done?
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PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#3
In reply to #2

Re: Short circuit and Voltage profile

03/08/2010 7:49 AM

Try British Standard 7671.

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