Do wind turbines using AC/DC/AC topology increase short-circuit power?
Do wind turbines using AC/DC/AC topology increase short-circuit power?
(OP)
Dear all,
Do wind turbines using AC/DC/AC topology increase the grid short-circuit power?
Best regards,
Herivelto Bronzeado
Do wind turbines using AC/DC/AC topology increase the grid short-circuit power?
Best regards,
Herivelto Bronzeado






RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
In this case, could I consider that a wind farm with 50 wind turbines running with this configuration (AC/DC/AC) would increase the short-circuit level by 50x1.2-1.5pu?
We had a problem in a substation busbar (69kV) and we suspect that the wind farm has contribute to the increase of the short-circuit level. But we could not prove that sofar. It is connected 80km away from our substation, being fed by a single line of 69kV.
Do youy think that the influence of that wind farm is considerable?
Regards,
Herivelto
RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
Alan
"The engineer's first problem in any design situation is to discover what the problem really is." Unk.
RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
The wind farm is embeded in the distribution system and we, as a transmission company, have no contract with them.
My question is a general question as I think that the converter limits (or cut) the current during a short-circuit in the grid.
Best regards,
Herivelto Bronzeado
RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
Alan
"The engineer's first problem in any design situation is to discover what the problem really is." Unk.
RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
http://
See page 52 onwards.
Regards
Marmite
RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
The last integration study I performed (about two days ago) we were supplied vendor data that showed inverter limits right at 1.2 pu fault current. As a worse case you could assume 1.5 to 2.0 pu fault current, but that really is a poor substitute for the proper information.
RE: Do wind turbines using AC/DC/AC topology increase short-circuit power?
Could we conclude that a machine with power electronics coupling does not increase tha shor-circuit level regarding to break current?
In other words, should we be worried about changing our circuit breakers in a substation when a wind farm with electronics coulpling machines is connected to that substation?
Regards,
H. Bronzeado