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dreamchaser
Active Contributor

Join Date: Aug 2010
Posts: 16

Will There Be a Separate Protection for Tie Breaker

03/11/2013 10:49 AM

In a switchyard of 400KV, one and half breaker scheme,Will the tie-breaker(breaker connecting two feeders/lines)have separate protection?In my switchyard only Local breaker backup is given.

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Pathfinder Tags: 400kv breaker one and half
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PeterT
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Join Date: May 2010
Location: Liverpool, NY
Posts: 961
Good Answers: 131
#1

Re: Will There Be a Separate Protection for Tie Breaker

03/11/2013 11:18 AM

Normally in a breaker-and-a-half scheme, each line/feeder will have its own protection, and each breaker (including the tie) will have its own breaker backup / breaker failure protection. If your transmission system regulations require it, you may need redundant protection schemes for reliability.

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