Prime-mover dynamo plants – Electric control – Engine control
Patent
1980-04-21
1982-09-14
Wade, Shelley
Prime-mover dynamo plants
Electric control
Engine control
307 87, 307129, H02J 308, H02P 904
Patent
active
043497446
ABSTRACT:
Two gas turbine power plants are started and accelerated by fuel controls on selection of dead load mode. The startup is coordinated so that one turbine-generator is controlled as the lead unit and it is driven to a speed higher than normal, short of overspeed condition at which time its breaker is closed on an auxiliary bus. Shortly thereafter the second turbine-generator is synchronized to the first and its generator breaker is closed to the auxiliary bus. The two units are then ready for a simultaneous 200% load pickup from the dead load bus. After the load is applied, the lead unit is placed under isochronous control and the follow unit is tracked to the lead unit. Turbine lead/follow roles can be reversed during startup under certain conditions, and predetermined data is exchanged between the controls to enable coordinated dead load pickup operation.
REFERENCES:
patent: 3235743 (1966-02-01), Ryerson et al.
patent: 3620010 (1971-11-01), Davis
patent: 3646356 (1972-02-01), Hoffman
patent: 3811273 (1974-05-01), Martin
Maekawa: University Lectures, Lectures in Power Transmission Engineering (last volume); 1970; (pp. 211-212).
Jennings Stephen J.
Reuther John F.
Yannone Robert A.
Possessky E. F.
Wade Shelley
Westinghouse Electric Corp.
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