机械与电子2024，Vol.42Issue(3)：26-31,39,7.
基于改进GCC算法的交流配电电缆局部放电在线定位方法研究
Research on Online Localization Method of Partial Discharge of AC Distribution Cable Based on Improved GCC Algorithm
摘要
Abstract
Due to the influence of electromagnetic noise and other factors,the existing on-line office dis-charge level method cannot accurately locate the office discharge fault.To handle it,this paper propo-ses an online localization method for cable local discharge signals that is suitable for practical engineering applications,based on the double-end localization method.The proposed method uses an improved gener-alized correlation algorithm to estimate the signal time delay,and takes into account the wave speed uncer-tainty of the local discharge signal.To improve local localizing accuracy under multiple localizing samples,a trimmed-mean data filtering speed algorithm is employed.Simulation and experimental results demon-strate that the proposed method effectively enhances time delay estimation accuracy and reduces localiza-tion error,even under complex electromagnetic noise environment and restricted sampling rates of detec-tion equipment,when compared to traditional time delay estimation localization methods.The experimental localizing relative error was found to be only 0.47%,which meets actual engineering requirements.关键词
改进GCC算法/交联聚乙烯/局部放电/在线定位Key words
improved GCC algorithm/XLPE/partial discharge/online localization分类
信息技术与安全科学引用本文复制引用
肖小龙,郭佳豪,郭茂森,杨景刚,许佳杰,方鑫,史明明,刘洋..基于改进GCC算法的交流配电电缆局部放电在线定位方法研究[J].机械与电子,2024,42(3):26-31,39,7.基金项目
国网江苏省电力有限公司科技资助项目(J2021056) （J2021056）
