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U.S. Department of Energy
Office of Scientific and Technical Information

Improved combined-cycle plant protection, reliability, and availability using generator circuit breakers

Conference ·
OSTI ID:5876418
 [1];  [2]
  1. ABB Power Generation Ltd., CH-5401, Baden (CH)
  2. ABB High Voltage Technologies Ltd., Div. AG, Ch-8050, Zuerich (CH)

Either a conventional start-up transformer configuration or a Generator Circuit Breaker (GCB) configuration can be used to interface the generators driven by the gas and steam turbines in a Combines-Cycle plant with the HV transmission system. The GCB configuration provides the following major advantages: 1. improved protection of the electric generator, the main transformer, the unit transformer, and the electric auxiliaries required for the gas and steam turbines; 2. increased power plant reliability and availability lower total investment costs; 3. more predictable and less expensive maintenance.

OSTI ID:
5876418
Report Number(s):
CONF-901034--
Country of Publication:
United States
Language:
English