DC Transmission control system

Details DC Transmission control system DC Transmission control system

1980-05-01

1982-05-18

Pellinen, A. D.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

H02J 336

Patent

active

043308155

ABSTRACT:
A DC power transmission control system for a DC line inserted between a pair of converters comprises a transformer provided on the AC side of each of the converters for maintaining constant the no-load voltage on the converter side by tap position control. One of the converters is operated as an inverter for control of the DC voltage. The control angle of the converter operated as the inverter is controlled by a signal associated with, e.g., a DC current as a load. The DC terminal voltages of the converters are made variable, thus reducing the amount of increase in the reactive power of the rectifier under a small load condition.

REFERENCES:
patent: 3801895 (1974-04-01), Kanngiesser
patent: 3886433 (1975-05-01), Watanabe
patent: 4205368 (1980-05-01), Erche et al.

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