System for predicting desynchronization of a synchronous...

Details System for predicting desynchronization of a synchronous... System for predicting desynchronization of a synchronous...

H - Electricity

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H02P 9/14 (2006.01) G01R 29/18 (2006.01) G01R 31/34 (2006.01) H02H 3/48 (2006.01) H02P 9/10 (2006.01)

Patent

CA 1142587

ABSTRACT OF THE DISCLOSURE A system is disclosed for predicting and regulating desynchronization of a synchronous machine, in which a voltage detected through a voltage transformer from an armature ter- minal of the synchronous machine is compared with a reference voltage by a voltage deviation detector and the resulting vol- tage deviation performs excitation of a field winding through an automatic voltage regulator and an excitation unit, in which a gap flux detector is installed in the synchronous ma- chine to detect its gap flux. The system comprises an analyzer for extracting a functional value of the flux based on the gap flux detected from the gap flux detector, a signal level com- parator for comparing the resulting functional value of the gap flux with a predetermined reference level, an amplifier for amplifying an output of the signal level comparator, and an adder for adding an output of the amplifier to the voltage de- viation obtained by the voltage deviation detector. This in turn is fed to the automatic voltage regulator.

346414

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