Power system stabilizer estimating a power system impedance

Details Power system stabilizer estimating a power system impedance Power system stabilizer estimating a power system impedance

1991-05-08

1994-04-05

Stephan, Steven L.

Electricity: single generator systems

Generator control

With means for suppressing, eliminating or minimizing...

322 25, 322 32, H02P 910

Patent

active

053008766

ABSTRACT:
A power system control apparatus has a power system impedance estimating circuit for estimating a power system impedance from an internal power of a generator, determined by an internal current thereof, and from a terminal voltage of the generator, and having a power system impedance estimating table, a power system stabilizer for suppressing a power fluctuation in power system in accordance with the estimated power system impedance, and an auto voltage regulator for keeping an output voltage of the generator at a constant value during a normal operation.

REFERENCES:
patent: 4080559 (1978-03-01), Wright et al.
patent: 4851766 (1989-07-01), Shiobara et al.
patent: 4855664 (1989-08-01), Lane
patent: 4967129 (1990-10-01), Tanaka
Soviet Inventions Illustrated, Electrical, week 8336, Oct. 19th 1983, section X, accession No. 83-757193/36, Derwent Publications Ltd, London, GB; & SU-A-970 623 (Energosetproekt) Oct. 30, 1982.
IEEE Transactions on Energy Conversion, vol. 5, No. 1, Mar. 1990, pp. 23-27; R. J. Fleming et al.: "Improved power system stabilizers".
Nonlinear Control Systems: An Introduction; A. Isidori; Mar. 1985; The book explains how to construct a nonlinear control system, in general area; The book is for general theory, not for designing power system stabilizer.

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