摘要
对输电线路故障原因辨识及故障定位方法进行论述,分析现有技术存在的不足之处,在此基础上提出输电线路故障诊断技术的主要研究方向,即:雷击故障辨识重点在于所对应的行波电流电磁暂态特征研究,利用其高频信号的特征差异来进行辨识,并最终将理论研究转化为挂网产品;而对于线路故障定位,可考虑改变监测点的布置方式及减少波速改变的影响,以便更准确地监测故障初始行波波头,提高输电线路故障定位精度。
The article elaborates on recogmuon ot tarot cuuscs and, analyzes disadvantages in current technologies, on the basis of which it points out the research direction of fault diagnosis technology for transmission lines： recognition of lightning strikes rests with research on electromagnetic transient characteristic of travelling wave current, recognition through differences of high-frequency signals and transformation from theoretical research into practice. As for fault location, it is considered to change the way of arrangement and reduce the influence from wave speed change so as to monitor wave front at the beginning of faults more accurately and improve location precision.
出处
《广东电力》
2012年第1期8-12,74,共6页
Guangdong Electric Power
关键词
输电线路
雷击故障辨识
非雷击故障辨识
故障定位
行波测距
transmission lines
lightening fault recognition
non-lightning strike
fault location
fault location based on trav-elling wave
