Microprocessor-based extraction turbine control

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

1983-12-16

1985-10-29

Ruggiero, Joseph

Boots, shoes, and leggings

60645, 60660, 364180, 415 17, G06F 1546, H02P 904

Patent

active

045503800

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. The extraction mode of turbine operation is subdivided into a provided set of mutually exclusive extraction control loops, each of which can be placed in service in a bumpless fashion upon transition from any other extraction control loop in a predetermined sequence. Upon a return from the manual mode of turbine operation to the automatic mode, a particular extraction control loop is automatically placed in service without the need for operator intervention.

REFERENCES:
patent: 3925645 (1975-12-01), Stern
patent: 4029255 (1977-06-01), Heiser et al.
patent: 4053745 (1977-10-01), Podolsky et al.
patent: 4427896 (1984-01-01), Waldron
patent: 4494208 (1985-01-01), Chang

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