One and a Half Breaker Scheme 400kv Switchyard

hi dude, gud eve u sent a pdf document i feel happy but i need in depth how it is working dude help me in my office no one is helping pls

hi lynlynch i need all types of swichyards working principle i searched in net but i got the adv and dis adv only but i never got the indepth working principle

Why not try using complete words when communicating. Proper spelling and punctuation would help, too. What does this mean,"i searched in net but i got the adv and dis adv"? Please speak English, not gibberish.

This is beginning to sound like homework, too. Or, worse yet, maybe you have a job at a switchyard and don't know what to do?

Anyway, you'll need to do some of the work yourself.

hello,

one and half scheme have two lines which are protected by three breakers. So one and half protection of each line. so it is called one and half scheme . It is mostly used for 400kV and above in India. It can have 'I' or 'D' configuration type while the switchyard is designed. It also have 3, 4, 5, 6 CT method where number of CT and their position varies. I think this gives you some idea. Try yourself to explore more dude. But never play with electrical without knowing it.

all the best.

Are you electrical engineer? if yes , study your text book, if not, don't try to take-up such assignment. OK?

Here is a really good and detailed guide for those who would like to know what goes into designing a substation:

http://www.usda.gov/rus/electric/pubs/1724e300/1724e300.pdf

It included evaluation of different bus configurations, equipment choices, ratings, specifications, and lots more. Study it for a year or four, and you may be ready to consider whether you can design a substation.