System and method employing a digital computer with improved pro

Details System and method employing a digital computer with improved pro System and method employing a digital computer with improved pro

1972-07-31

1977-06-21

Schaefer, Robert K.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

290 1R, H01J 300

Patent

active

040314073

ABSTRACT:
A gas turbine power plant is provided with an industrial gas turbine which drives a rotating brushless exciter generator coupled to a power system through a breaker. One or more of the turbine-generator plants are operated by a hybrid digital computer control system during sequenced startup, synchronizing, load and shutdown operations. The program system for the computer and external analog circuitry operate in a multiple gas turbine control loop arrangement. Automatic synchronization is achieved with a hybrid subsystem which includes the programmed computer and external phase detection circuitry. An automatic synchronization program for the computer is divided into rough speed and voltage matching, fine speed matching and breaker closure subprograms.

REFERENCES:
patent: 3325650 (1967-06-01), Barnes
patent: 3552872 (1969-04-01), Giras et al.
patent: 3569785 (1971-03-01), Durbeck
patent: 3599007 (1971-08-01), Martin
patent: 3709626 (1973-01-01), Eggenberger

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