negative sequence direction 负序方向
negative-sequence direction relay 负序方向元件
negative sequence power direction relay 负序功率方向保护
negative-sequence power direction 负序功率方向
A sequence of values indicating positive or negative direction in time, years, months, days, hours, minutes, and seconds.
表示时间正向或逆向的一组值：年、月、日、时、分和秒。
The paper proposes a novel shunt reactors turn-to-turn fault protection that is based on negative-sequence power direction theory.
提出了基于负序功率方向的并联电抗器匝间故障保护原理。
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