Electricity: power supply or regulation systems – Remote sensing
Patent
1977-06-30
1979-05-22
Pellinen, A. D.
Electricity: power supply or regulation systems
Remote sensing
323119, H02J 318
Patent
active
041561767
ABSTRACT:
A voltage regulator is taught for maintaning 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 range for the thyristor 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 processed and compared against a reference. The integrated difference thereof is utilized to determine the firing angle for the thyristor switch.
REFERENCES:
patent: 2652529 (1953-09-01), Alexanderson
patent: 3424970 (1969-01-01), Ross
patent: 3450983 (1969-06-01), Koppelmann et al.
patent: 3849677 (1974-11-01), Stacey et al.
patent: 3942100 (1976-03-01), Kauferle et al.
patent: 3987360 (1976-10-01), Brennen et al.
Brennen Michael B.
Gyugyi Laszlo
Putman Thomas H.
Electric Power Research Institute Inc.
Moran M. J.
Pellinen A. D.
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