Steam Turbine / Generator / Control System

for Combined Cycle Power Plant

Steam Turbine

The generator used with Toshiba's combined cycle power plant is a water (for stator) and hydrogen (for rotor) cooled unit that efficiently converts rotational energy into electricity. Toshiba's long history as an integrated manufacturer of electronic devices and semiconductors enables it to apply leading edge digital electronic techniques to the generator's control devices. Reliability of the AVR (Automatic Voltage Regulator) and the Thyristor starting system is improved significantly as production and maintenance costs are lowered by replacing customized printed circuit boards with standard memory circuits. See Turbine products section for more details.

Double Flow Exhaust Steam Turbine

Double Flow Exhaust Steam Turbine Section Double Flow Exhaust Steam Turbine

Generator

The generator used with Toshiba's combined cycle power plant is a water(for stator) and hydrogen (for rotor) cooled unit that efficiently converts rotational energy into electricity. Toshiba's long history as an integrated manufacturer of electronic devices and semiconductors enables it to apply leading edge digital electronic techniques to the generator's control devices. Reliability of the AVR (Automatic Voltage Regulator) and the Thyristor starting system is improved significantly as production and maintenance costs are lowered by replacing customized printed circuit boards with standard memory circuits. See Generator products section for more details.

Thyristor Starting Method

Thyristor Starting Method

Digital AVR

Digital AVR

Digital Control System

The increased use of Toshiba's microprocessor based digital control technologies enables centralised control over plant systems as diverse as the gas turbine, HRSG, steam turbine and the generator. The system uses high resolution colour display terminals and a user friendly man machine interface that maximises control while minimising the number of operators required. Parallel sets of gas and steam turbines can be controlled as if they were a single set. See DCS (Distributed Control System) section for more details.