Busbar protection
Busbar protection
(OP)
How can I increase the earthing at 11KV busbar if the generator is S/d
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RE: Busbar protection
You need to give more details as to what you are trying to do.
RE: Busbar protection
1-4.nos step up transformer is 11/220KV ,31MVA,Zk=12% and neutarl is grounding from the secondary site
2.the neutarl of generator is small resistance 10A/10S
3.the earth resistance of the plant .8 Ohm
4.without gasturbine 11KV system has only earthing through voltage transformer and the natural system capacitances to earth
5-The neutral of busbar is solidy(no neutarl)
6-the protection is at busbar 11KV and is earth fault