Hitachi, Ltd.

Tohoku Electric Power Company, Inc.

Tohoku Electric Manufacturing Co., Ltd.

Toshiyuki Seto

Masahiro Watanabe

Kenichiro Yamane

Katsuhiro Matsuda

Jun Murakoshi

Ryo Egashira

Takafumi Futakami

A voltage adjustment device, a voltage adjusting method and a power control system for a distribution system are provided, in which the voltage adjustment device and a static var compensator are appropriately operated in a coordinated manner and the sustention of voltage and the enhancement of the operation efficiency are attained. A voltage adjustment device for a distribution system is installed in the distribution system including a static var compensator on an end side and controls a secondary voltage to be within a predetermined limit value by adjusting a tap position. The voltage adjustment device includes a first unit configured to estimate the secondary voltage; a second unit configured to obtain a corrected voltage by correcting the estimated secondary voltage by using a correction amount obtained from an output of the static var compensator; and a third unit configured to compare the corrected voltage with the predetermined limit value and operate the tap position when the corrected voltage deviates from the predetermined limit value.

Voltage adjustment device for power distribution system, voltage adjusting method, and power control system

Growing community of inventors

Sendai, Japan

Toshiyuki Seto