Prime-mover dynamo plants – Electric control – Engine control
Patent
1974-08-13
1980-05-06
Rubinson, Gene Z.
Prime-mover dynamo plants
Electric control
Engine control
364494, 60660, 60 3918B, H02P 904
Patent
active
042019249
ABSTRACT:
A combined cycle electric power plant includes two gas turbines, a steam turbine, and a digital control system with an operator analog or manual backup. Each of the gas turbines has an exhaust heat recovery steam generator connected to a common header from which the steam is supplied by one or both of the steam generators for operating the steam turbine. The control system is of the sliding pressure type and maintains a predetermined steam pressure as a function of steam flow according to a predetermined characterization depending on the number of steam generators in service to limit the maximum steam velocity through the steam generators, and reduce the probability of water carryover into the steam turbine. Such control is always maintained by the bypass valve. The turbine control valve responds to the speed/load demand only, except when the bypass valve is closed and the rate of steam generation is insufficient to maintain a predetermined pressure flow relationship.
REFERENCES:
patent: 3391539 (1968-07-01), Dimitroff et al.
patent: 3741246 (1973-06-01), Braytenbatt
patent: 3762162 (1973-10-01), Miura et al.
Patterson H. W.
Redman John W.
Rubinson Gene Z.
Westinghouse Electric Corp.
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