电网技术2001，Vol.25Issue(3)：26-29,4.
验证小波变换行波故障测距法的现场试验
FIELD SHORT-CIRCUIT TEST TO VALIDATE TRAVELLING
WAVE FAULT LOCATION USING WAVELET TRANSFORM
郑健超 1陈祥训 1覃剑 1邹刚 1淡文刚 1吴成琦 2李树忠 3吴俊山3
作者信息
- 1. 中国电力科学研究院,
- 2. 中国东北电力集团公司,
- 3. 抚顺电业局,
- 折叠
摘要
Abstract
Existing methods for travelling wave fault location seldom consider the attenuation and distortion of travelling wave propagating in transmission line and do not solve the problems to define the arrival time of travelling wave and the propagation velocity properly, which leads to poor location accuracy. For this reason a new double terminal travelling wave method using wavelet transform (WT) is presented. A field short-circuit test has been performed to validate the applicability and accuracy of the new method. This paper describes the field test and the analysis results of the test data, meanwhile a comparison between WT method and traditional method is given. The field test results show that the accuracy of WT method is higher than that of traditional method and not affected by many factors, such as fault occurring voltage angle. The new method is capable of locating faults on transmission lines with accuracy up to ± 300 meters. WT is suitable for travelling wave fault location.关键词
小波变换/故障测距/行波/输电线路/现场试验分类
信息技术与安全科学引用本文复制引用
郑健超,陈祥训,覃剑,邹刚,淡文刚,吴成琦,李树忠,吴俊山..验证小波变换行波故障测距法的现场试验[J].电网技术,2001,25(3):26-29,4.
