摘要
本文研究树型电力网发生单一短路或断路故障,且故障点线间具有任意量值的接触电阻时的故障诊断问题。提出了故障点定位和接触电阻定值的一种方法——零泛器替代法。论述了这种诊断方法的原理,建立了诊断方程,提出了算法。最后给出了具有5个分支的树型电力网短路和断路故障诊断的算例。
The problem of fault diagnosis of a tree-type power network with a short-circuit or an open-circuit and a conrac resistance of arbitrary value between lines is studied. Based on nullor substitution, the method presented here is suitable for fault locating and contact resistance evaluating. Principles of diagnosis are discussed, diagcosis equations are established, and diagnosis algorithms are presented. Finally, examples for diagnosing a five-branches tree-type power network with a shore-circuit or an open-circuit art given.
关键词
树型电力网
故障诊断
故障分支识别
故障定位
Tree-type power network
Fault diagnosis
Fault branch identification
Fault location
