Scheme for rapid adjustment of network impedance

Details Scheme for rapid adjustment of network impedance Scheme for rapid adjustment of network impedance

1986-01-22

1991-07-16

Ip, Paul

Electrical transmission or interconnection systems

Switching systems

307 82, 307 87, 323211, H02J 334

Patent

active

050327380

ABSTRACT:
A static controlled reactance device is inserted in series with an AC electric power transmission line to adjust its transfer impedance. An inductor (reactor) is serially connected with two back-to-back connected thyristors which control the conduction period and hence the effective reactance of the inductor. Additional reactive elements are provided in parallel with the thyristor controlled reactor to filter harmonics and to obtain required range of variable reactance. Alternatively, the static controlled reactance device discussed above may be connected to the secondary winding of a series transformer having its primary winding connected in series to the transmission line. In a three phase transmission system, the controlled reactance device may be connected in delta configuration on the secondary side of the series transformer to eliminate triplen harmonics.

REFERENCES:
patent: 3731183 (1973-05-01), Johnson et al.
patent: 3745437 (1973-07-01), Brown
patent: 3855134 (1976-05-01), Woodford
patent: 3932808 (1976-01-01), Frank
patent: 3936727 (1976-02-01), Kelley, Jr. et al.
patent: 3992661 (1976-11-01), Kelley, Jr.
patent: 3999115 (1976-12-01), South et al.
patent: 3999117 (1976-12-01), Gyugyi et al.
patent: 4096431 (1978-06-01), Hammarlund
patent: 4104576 (1978-08-01), Frank
patent: 4156176 (1979-05-01), Gyugyi et al.
patent: 4204151 (1980-05-01), Gyugyi et al.
patent: 4210860 (1980-07-01), Rosa et al.
patent: 4234843 (1980-11-01), Gyugyi et al.
patent: 4255700 (1981-03-01), Takeda
patent: 4302715 (1981-11-01), Putman et al.
patent: 4353024 (1982-10-01), Gyugyi
patent: 4356441 (1982-10-01), Putman et al.
patent: 4357570 (1982-11-01), Schmid et al.
patent: 4434376 (1984-02-01), Hingorani
patent: 4437052 (1984-03-01), Gyugyi
patent: 4438386 (1984-03-01), Gyugyi
patent: 4451777 (1984-05-01), Gyugyi
patent: 4470005 (1984-09-01), Gyugyi
patent: 4472674 (1984-09-01), Yano et al.
patent: 4513240 (1985-04-01), Putman
patent: 4555659 (1985-11-01), Gyugyi
patent: 4560917 (1985-12-01), Gyugyi
patent: 4567424 (1986-01-01), Dobsa et al.
patent: 4621198 (1986-11-01), Roberge et al.

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