G - Physics – 05 – F
Patent
G - Physics
05
F
323/21
G05F 1/70 (2006.01) H02J 3/16 (2006.01)
Patent
CA 1123914
47,478 VOLTAGE REGULATOR UTILIZING A STATIC VAR GENERATOR ABSTRACT OF THE DISCLOSURE A voltage regulator is taught for maintaining the terminal voltage of a three phase transmission line at a fixed reference value. The voltage regulator system utilizes the inductive reactance of the transmission line in conjunction with reactive current from a VAR generator to compensate for the voltage effect of line current as it flows through the inductive reactance. The VAR generator is of the parallel capacitor-inductor type where the inductor is controlled by a thyristor switch. The firing angle for the thyrister switch is determined by a fast acting static control system which utilizes line-to-line voltage and line-to-ground voltage as an input. A signal related to the latter voltages is pro- cessed and compared again t a reference. The integrated difference thereof is utilized to determine the firing angle for the thyristor switch.
305805
Brennen Michael B.
Gyugyi Laszlo
Putman Thomas H.
Mcconnell And Fox
Westinghouse Electric Corporation
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