【摘要】 提出一种新原理的绝对值比较式零序方向保护,它既能保护电抗器绕组匝间短路,又能保护内部单相接地,它的动作灵敏度及可靠性在原理上比传统的零序功率方向保护及补偿式零序方向保护要高。更多还原

【Abstract】 A new type zero-sequence directional protection based on the comparison of absolute value is presented in the paper.It can protect not only the reactor turn-to-turn short circuit,but also the internal single phase earthing protection.From the point of view of the theory,the sensitivity and reliability of this new type protection are higher than the traditional zero-sequence directional protection or the compensatory zero-sequence directional protection.更多还原