Limiting fault current

[Pharon]

I'm looking to parallel a couple 4MW co-gens to a large facility's electric service, but POCO is telling me that their fault current contribution to their upstream station is too high. Does anyone have any ideas on how we could reduce it? The only one I could think of is increasing the impedance on the isolation transformer, but apparently there are these superconducting fault current limiters out there that have been pretty effective (though I have no idea what they cost). I also hear inline reactors might do the trick.

Anyone run across this issue? And if so, did you find any good solutions?

 

[templdl]

I'm looking to parallel a couple 4MW co-gens to a large facility's electric service, but POCO is telling me that their fault current contribution to their upstream station is too high. Does anyone have any ideas on how we could reduce it? The only one I could think of is increasing the impedance on the isolation transformer, but apparently there are these superconducting fault current limiters out there that have been pretty effective (though I have no idea what they cost). I also hear inline reactors might do the trick.

Anyone run across this issue? And if so, did you find any good solutions?

Use an aircore reactor.