110kV线路微机保护的应用技巧

A Discussion of an Applied Technique for 110 kV Transmission Line Microcomputer-Based Protection

对110kV线路常常提出“全线速动”的要求。微机保护的应用使我们有可能运用一些技巧，以“非纵联”方式解决这一问题。本文着重介绍的是运用“顺序重合闸”原理实现单侧电源多级线路的“全线速动”。另外，运用同一端两保护之间的横向联系来实现双回线路的“相继速动”，以及“不对称故障的相继速动”方式均已在山西电网推广使用，效果良好。

This paper mainly discusses the technique for the application for the microcomputer - Based protection in 110 kV transmission lines, analyses the principles of the Recloser in order. The advanced Microcomputer- Based protection, with this function, LFP-941J is applied to 110 kV transmission lines,which requires a fast trip for anywhere fault of all the line.