摘要
为了提高传统的双端行波测距精度,在分析故障行波传播过程的基础上,提出一种T型输电线路组合行波测距方法。首先利用双端原理区分故障发生区段,进而判断第二次到达各母线侧行波为故障点反射波还是分支点反射波,最后由单端原理进行故障测距。本方法优势在于消除了给定线路长度误差以及线路两端时间同步误差对传统的双端测距精度的影响。通过PSCAD仿真分析,与传统的双端测距方法相比,所提T型输电线路组合行波测距方法的测距精度明显提高。
In order to improve the ranging accuracy of traditional double terminal traveling waves, based on the analy- sis of fault traveling wave propagation process, we propose a combination travelling wave fault location method for T- type transmission line. Firstly, the double-ended principle is used to distinct the failure zone, and then, we judge the traveling waves reaching each bus side secondly is reflected wave of fault location or branch points. Finally, the prin- ciple of a single-ended is used for fault location. The advantage of the method is to eliminatea given line length error and the effect of time synchronization error of double-ended line on the traditional double ended ranging precision. By PSCAD simulation analysis, compared with conventional double ended ranging method, the proposed method signifi- cantly improves the ranging accuracy.
出处
《电测与仪表》
北大核心
2016年第2期67-72,共6页
Electrical Measurement & Instrumentation
关键词
T型输电线路
组合行波
反射波
T-type transmission line, a combination of traveling wave, reflected wave
