期刊论文

Research on Characteristics of Traveling Wave Full-waveform in the Time and Frequency Domains

中文

中国电机工程学报

0258-8013

2019

39

11

3231-3242

10.13334/j.0258-8013.pcsee.181326

2016YFB0900600:国家重点研发计划 51737002:国家自然科学基金 51877012:国家自然科学基金 1577014:国家自然科学基金 2019JJ50660:国家自然科学基金

本校为第一机构

基于行波信号的故障检测以故障行波的产生、传输特性和折、反射机理为基础。故障行波是一个宽频带阶跃信号,兼具时域和频域的波形特性。融合故障行波时–频域波形,该文提出基于全波形信息的故障行波表现形式,全面刻画行波的传播过程;深度挖掘故障行波全波形与网络拓扑结构、故障点位置和故障点参数的关联,分析折射和反射过程、传输函数和故障点参数对行波全波形传播造成的影响,对区内各点故障和区内、外故障,行波全波形的相似性和差异性进行了定性分析;运用时–频域波形相关系数实现行波全波形的有效辨识,通过大量PSCAD/EMTDC仿真,总结区内不同故障点,区内、外故障以及不同故障点参数,行波全波形...

Traveling-wave-based fault detection is on the basis of traveling wave transmission characteristic,refraction and reflection mechanism.The fault characteristics of wideband traveling wave under the time-frequency domains were deeply analyzed in this paper.Full-waveform representation of the traveling wave by fusing the characteristics in time-frequency domains was proposed.The relationship between the full-waveform and the topology structure,fault location,transmission characteristics,refraction and reflection process was deeply excavated.And then the correlation and difference of the full-wav...