新型线路故障点测距算法

A new protecting distance finding algorithm

现有的线路测距算法都是基于单端量的,其主要问题就是过渡电阻的影响,虽然已经提出了很多减小过渡电阻影响的方法,但无法从根本上消除它。随着纵差保护在线路保护中应用得越来越广泛,提出了一种新型的基于双端量纵差保护的测距算法。

Today the main protecting distance finding uses single-terminal variable, this method has an apparent defect because of transition resistance ,although many methods used to minish influence of transition resistance have been extracted, it can not be canceled. This article will give a new distance finding algorithm accompany with the differential protection development.