外桥接线方式下分段保护极性更改方案优化

Block protection polarity change scheme optimization under the mode outside the bridge connection

突破传统保护在功能上的设计局限性,通过在保护装置中巧妙的增加一个"电流反极性退出"控制字,从而实现了分段保护极性的灵活更改,有效解决了传统方案在外桥接线方式下更改分段保护极性存在的问题。

Breaking the design limitations of the traditional protection on the function, by adding a control word ＂ current reverse polarity exit＂ in protection device, so as to realize the flexible change of the block polarity protection, effectively solved the change block polarity protection problems under outside bridge connection mode in the traditional scheme.