I am in the process of selecting the terminal voltage for a 140MVA 50Hz 3000rpm generator driven by a gas turbine. I would appreciate any comments regarding the pros and cons of selecting 15kV over 11kV. Our preliminary analysis has clearly shown there is an advantage when considering losses...
RalphChristie
The transformers would be paralleled for only short periods of time to transfer load without interruption of supply, ie to take one transformer circuit out of service for maintenance etc.
I have two 6.6kV supplies from different sources. The 6.6kV supplies will be used to provide a low voltage supply to auxiliary switchboards via step-down transformers, 2MVA in size. One supply will be the normal supply the other standby. Unfortunately there is a 30 deg phase shift between...
We have a 100m section of 132kV cable entering into an outdoor substation. At one end the cable is connected to an OHL. Surge arrestors have been installed at the cable sealing ends. The other end the cable terminates into a bay feeder and no surge arrestors have been installed. All other bays...
