中国电机工程学报Issue(19)：208-214,7.
变电站局部放电特高频信号时延的双谱估计算法
Time-delay Estimation Algorithm of Partial Discharge UHF Signals in Substation Based on Bispectrum
摘要
Abstract
Time delay estimation is the basis of the localization algorithm for partial discharge(PD) based on time difference in substation, and it is the key to the localization accuracy. Theoretical basis of bispectrum time delay estimation was described, and the computational numerical implementation steps of the parametric bispectrum time estimation algorithm was given. In the simulation test, simulated signals of the UHF caused by partial discharge, which were simulated by double exponential oscillation decay function, and noised by Gaussion progress and period signals, were used for verifying the accuracy of this algorithm. Finally the algorithm was used to calculate time delay of the field PD signals, and the sequence of the delay was applied to substation PD localization based on antenna array. The PD source location could be estimated, so the effectiveness and practicality of the algorithm has been verified.关键词
局部放电/特高频/时延估计/双谱/定位算法Key words
partial discharge(PD)/ultra-high frequency/time delay estimation/bispectrum/localization algorithm分类
信息技术与安全科学引用本文复制引用
侯慧娟,盛戈皞,苗培青,李秀卫,江秀臣..变电站局部放电特高频信号时延的双谱估计算法[J].中国电机工程学报,2013,(19):208-214,7.基金项目
国家高技术研究发展计划项目(863计划)(SS2012AA 050803)；上海市科委项目资助(10dz1203000)。National High Technology Research and Development Program (863 Program)(SS2012AA050803) （863计划）
Shanghai Science and Technology Project (10dz1203000) （10dz1203000）
