电工技术学报2016，Vol.31Issue(10)：119-126,8.
一种多样本信息的局部放电源逐次逼近定位方法
A Positioning Approach Based on Successive Approximation of Multi-Samples for Partial Discharge Source
摘要
Abstract
Time-delay estimation is the key to locate partial discharge (PD) source accurately with the time difference of arrival (TDOA) method. However, the time-delay error inevitably exists during measuring time difference, which leads to large location error because of low time delay accuracy. In order to reduce the dependency of the TDOA method on time delay accuracy, a novel PD source location approach based on successive approximation of multi-samples is proposed in this paper. The particle swarm optimization is employed to recurrently perform the optimization objective function. In this optimization objective function, the single sample value is obtained by the traditional TDOA method, while sensor array in turn determines the optimal location of the PD source. Experimental results show that the proposed method can effectively solve the problem of low location accuracy for the PD source caused by the poor accuracy of time delay measurements. The positioning result of the proposed method is potentially better than that of the traditional TDOA method, which verifies the proposed method.关键词
局部放电/到达时间差/逐次逼近方法/粒子群优化/定位准确度Key words
Partial discharge/time difference of arrival/successive approximation method/particle swarm optimization/positioning accuracy分类
信息技术与安全科学引用本文复制引用
唐炬,黄亮,曾福平,张晓星..一种多样本信息的局部放电源逐次逼近定位方法[J].电工技术学报,2016,31(10):119-126,8.基金项目
国家自然科学基金(51377181)和重庆市基础与前沿研究计划(cstc2013jjb90002)资助项目. （51377181）
