System for predicting desynchronization of a synchronous machine

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

1982-03-15

1983-03-08

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Generator protective circuits

322 24, 322 19, 322 28, 361 20, 361113, H02H 706

Patent

active

043762956

ABSTRACT:
There is disclosed a system for predicting desynchronization of a synchronous machine by detecting a phenomenon of radical variation of the magnetic flux in the gap of a synchronous machine immediately before falling in an asynchronous state. For example, a functional value of the fundamental harmonic component and that of the higher harmonic component of the flux in the gap are detected for comparing the variation of each functional value with a predetermined reference level to predict desynchronization of the synchronous machine.

REFERENCES:
patent: 2232257 (1941-02-01), Myles
patent: 3515943 (1970-06-01), Warrington
patent: 3621369 (1971-11-01), Nagae et al.
patent: 3970897 (1976-07-01), Tamir et al.
patent: 4136312 (1979-01-01), Salon
patent: 4329637 (1982-05-01), Kotake et al.

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