High Impedence Protection - Shunt Reactor
High Impedence Protection - Shunt Reactor
(OP)
This is my 3rd project where in i'm commissioning a Shunt reactor protected with High Impedence Differential Protection ( rating 125 MVAr). I couldn't get a convincing answer as to Why are Shunt Reactors protected with High Impedence Differential Protection? Why not Low Impedence differential Protection?
Have any one of you come across a low impedence differential protection for reactor?
Have any one of you come across a low impedence differential protection for reactor?






RE: High Impedence Protection - Shunt Reactor
RE: High Impedence Protection - Shunt Reactor
Regards
Marmite
RE: High Impedence Protection - Shunt Reactor
Thanks for the replies.
RE: High Impedence Protection - Shunt Reactor
HI is more simple and more sensitive ( newer LI is sensitive too), but request a high qulity of CT.
RE: High Impedence Protection - Shunt Reactor
You are right, I'm trying to look at the details of the sensitivity issue of High Impedence v/s Low Impedence and found that for same CT characteristics, Low Impedence is more sensitive. And High Impedence has better sensitivity only with a better CT.