System and method employing a digital computer for automatically synchronizing a gas turbine or other electric power plant generator with a power system
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United States of America Patent
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Aug 20, 1985
Issued Date -
N/A
app pub date -
Jul 31, 1972
filing date -
Dec 18, 1970
priority date (Note) -
Expired
status (Latency Note)
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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.
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