Synchronization system for a combined cycle electric power plant

Details Synchronization system for a combined cycle electric power plant Synchronization system for a combined cycle electric power plant

1974-08-08

1978-10-03

Schaefer, Robert K.

Prime-mover dynamo plants

Electric control

Engine control

364492, 364494, 307 87, H02J 300

Patent

active

041186354

ABSTRACT:
A combined cycle electric power plant includes gas and steam turbines and steam generators and a digital/analog control system. In the control system, an automatic digital computer control generates position setpoints for the gas turbine fuel valves and the steam turbine inlet valves to control speed and load. A synchronizer system includes a sequencer which is largely embodied in the digital computer as an element of the automatic control and it further includes a synchronizer which is external to the automatic control. The sequencer connects the synchronizer to synchronize the three generators in a sequence which depends on the startup and loading operation of the turbines, the synchronization operation of the synchronizer and the operation of the breakers. Turbine speed changes are initiated by the speed/load control under synchronizer control.

REFERENCES:
patent: 3300647 (1967-01-01), Gogia et al.
patent: 3427466 (1969-02-01), Gogia et al.
patent: 3489914 (1970-01-01), Taylor
patent: 3794846 (1974-02-01), Schlicher et al.

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