行波故障测距及其应用

Modern Traveling Wave Based Fault Location System and Its Application

论述了双端和单端输电线路行波故障测距基本原理,在此基础上介绍了一种以D型为主、A型为辅的优化组合输电线路行波故障测距方案,通过两种行波测距原理的有机配合,不仅可以获得更为理想的测距效果,还可以进一步提高行波故障测距系统的性能价格比。同时介绍了行波故障测距系统的总体构成,即包括行波采集与处理系统、行波综合分析系统、远程维护系统以及通信网络4部分。另外还给出了优化组合行波测距方案在该系统中的应用实例。实际运行表明,采用优化组合行波测距方案,现代行波故障测距系统的测距误差能够达到200m以内。

The modern double-ended and single-ended travelling wave based fault location principles for transmission lines are reviewed. Based on this, an optimum combined travelling wave based fault location scheme is presented in which the Type D principle is used as the main principle, and the Type A principle is used as the auxiliary one. Then the system structure of travelling wave system and several actual application examples for the optimum combined travelling wave scheme and the single Type A travelling wave scheme in the system are introduced. The actual operation shows that using the optimum combined travelling wave scheme, a location error within 200m can be reached for the modern travelling wave based fault locating system. Moreover, the single Type A travelling wave scheme is also feasible in case that there are more than three lines connected to the same busbar.