High speed control of reactive power for voltage stabilization i

Electricity: power supply or regulation systems – Remote sensing

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323109, 323124, G05F 168

Patent

active

039367274

ABSTRACT:
In an alternating current electric power system subject to rapid load voltage regulation as a result of variations in reactive load current, reactive load current compensation is provided by fixed capacitors and inductors in parallel with the load, the inductors being in series with static switches which are phase controlled to continuously maintain the net reactive compensating current substantially equal and opposite to the reactive component of load current. Compensation control determines firing time of the static switches in accordance with the magnitude of reactive load current and regulating means additionally controls firing time to maintain line current and voltage at a selected line location substantially in phase coincidence.

REFERENCES:
patent: 3139577 (1964-06-01), Krezek
patent: 3548296 (1970-12-01), Sundstrom
patent: 3551799 (1970-12-01), Koppelman
patent: 3829736 (1974-08-01), Schirman
patent: 3883792 (1975-05-01), Ellert
Electric Technology- U.S.S.R., Vol. 1, 1969, pp. 46-62, pub. Pergamon Press, Oct. 1969.
Proc. of Amer. Power Conf., 1972, pub. Apr. 1972, pp. 1097-1105.

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