Voltage fluctuation compensating apparatus

Details Voltage fluctuation compensating apparatus Voltage fluctuation compensating apparatus

2005-10-18

2005-10-18

Berhane, Adolf (Department: 2838)

Electrical transmission or interconnection systems

With line drop compensation

C323S207000

Reexamination Certificate

active

06956305

ABSTRACT:
Voltage compensation circuits connect DC voltages accumulated in capacitors having respectively different charging voltageswhich are 2K(where K=0, 1, 2, . . . ) times the minimum voltage into AC voltages. The voltage compensation circuits are connected in series to an electric power system in series. When the voltage dip occurs in an electric power system, a combination of voltage compensation circuits is selected from the voltage compensation circuits. The sum of the output voltage compensates the voltage dip. During normal operation, a high speed mechanical short circuit switch by-passes the voltage compensation circuits to reduce power loss.

REFERENCES:
patent: 4673823 (1987-06-01), Tanaka
patent: 4752726 (1988-06-01), Aoyama
patent: 4812669 (1989-03-01), Takeda et al.
patent: 5825162 (1998-10-01), Kida et al.
patent: 2276680 (1998-03-01), None
patent: 3-228924 (1988-09-01), None
patent: 1-170328 (1989-07-01), None

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