Power system stabilizer system having improved integrity checkin

Details Power system stabilizer system having improved integrity checkin Power system stabilizer system having improved integrity checkin

1989-10-12

1991-03-12

Skudy, R.

Electricity: single generator systems

With signals, indicators, recorders, testing, etc.

322 25, 322 58, H02P 900

Patent

active

049995642

ABSTRACT:
In a system for stabilizing the operation of an electrical generator connected to a power distribution network, which system includes a power system stabilizer operating through a modulator circuit to control generator oscillations, there is included a scheme for testing the integrity of the power system stabilizer and modulator circuit which involves the application of a test signal having known values to the power system stabilizer. This test signal propagates through the circuitry and the resultant output is demodulated to be compared with a stored representation of the test signal to thus yield outputs representing the gain and phase shift of the power system stabilizer and modulator circuit in combination.

REFERENCES:
patent: 3474323 (1969-10-01), Kilgore et al.
patent: 4463306 (1984-07-01), de Mello et al.
patent: 4701689 (1987-10-01), Yuan et al.
patent: 4733156 (1988-03-01), Tanaka et al.
patent: 4741023 (1988-04-01), Lawson
patent: 4788653 (1988-11-01), Henderson et al.
patent: 4855644 (1989-08-01), Lane

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