Kabushiki Kaisha Toshiba

Satoshi Shinsyou

Masao Hori

Shigeo Iinuma

There is provided a reclosing system for a power transmission line, which performs high-speed reclosing using protection relays. The protection relays are provided at different terminals of the power transmission line. Each of the protection relays is configured to send the reclosing command to the circuit breaker when a line voltage at the phase with the accident, detected by the metering voltage transformer after the phase with the accident is cut off, falls within an allowable range. The allowable range is determined based on a line voltage assumed at the phase when the phase is normal.

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Kawaguchi, Japan

Satoshi Shinsyou