Microprocessor-based extraction turbine control

Details Microprocessor-based extraction turbine control Microprocessor-based extraction turbine control

1984-07-30

1986-07-29

Wise, Edward J.

Boots, shoes, and leggings

415 15, 415 17, 290 40R, 60645, 60660, H02P 904, G05B 1500, G06F 1546

Patent

active

046033947

ABSTRACT:
A microprocessor-based controller for an extraction type steam turbine-generator unit capable of selecting from a variety of predetermined control strategies and implementing corresponding valve position control loops by generating appropriate valve position control signals in accordance with operator-chosen setpoint signals and turbine operating level signals. In a particular control strategy, automatic system frequency correction is achieved in a load control mode upon separation of the turbine-generator from the utility power grid, by detecting turbine speed deviation beyond predetermined limits and correcting turbine speed to synchronous speed without the need for operator intervention.

REFERENCES:
patent: 3452258 (1969-06-01), Thompson
patent: 4029255 (1977-06-01), Heiser et al.
patent: 4029951 (1977-06-01), Berry et al.
patent: 4053746 (1977-10-01), Braytenbah et al.
patent: 4297848 (1981-11-01), Silvestri, Jr.
patent: 4427896 (1984-01-01), Waldron
patent: 4494208 (1985-01-01), Chang
patent: 4550380 (1985-10-01), Bukowski et al.

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