Patent ID: 8963350
Filing Date: 2015-02-24
Classification: F01D,F01K,F02C

Abstract:
1. A steam turbine driven electric power plant comprising: a main steam turbine coupleable to at least one source of pressurized steam; an alternating current (AC) synchronous rotating electrical machine; a clutch controllably coupling a shaft of the main steam turbine and a shaft of the rotating electrical machine at least during nominal operation of the power plant to generate alternating current to a power grid from torque applied by the main steam turbine to the rotating electrical machine; an industrial steam turbine, coupleable to the synchronous electrical machine, the industrial steam turbine having a smaller rating than the main steam turbine; and, associated valves and controls configured during an islanding mode of the plant to decouple the main steam turbine substantially from the source of pressurized steam and to operate the industrial steam turbine for applying torque to the rotating electrical machine.