中国电机工程学报2018，Vol.38Issue(5)：1475-1487,后插21,14.DOI:10.13334/j.0258-8013.pcsee.170899
基于波形唯一和时–频特征匹配的单端行波保护和故障定位方法
Research on Single-end Traveling Wave Based Protection and Fault Location Method Based on Waveform Uniqueness and Feature Matching in the Time and Frequency Domain
摘要
Abstract
Communication channels and time synchronization are not needed in single-end traveling wave protection and fault location method, which greatly decreases one-off investment and increases protection reliability. Based on the traveling waveform uniqueness detected at single- terminal, the broadband traveling wave signal was analyzed at multi-scale: arrival time, frequency, amplitude, and polarity, etc. From the transmission characteristics and refraction/ reflection process of traveling wave, similarity and diversity of traveling wave within the time-frequency domain, when the faults were occurred within a transmission line or at different lines, are qualitative and quantitative analyzed. Time-frequency matrix was built based on the three-dimension waveform by CWT, and a single-end traveling wave protection and fault location is proposed by using feather matching technology. Comprehensively used multi-dimension fault information, it effectively overcomes the disadvantages of current methods, such as: used partial information from the time or frequency domain, heavily dependent on wave-front, or mode transmission velocity. Theoretical analysis and a large amount of simulation results show that the proposed protection and fault location schemes are easy to realize, and with high sensitivity and reliability.关键词
故障行波/单端/保护和定位/时–频多尺度/唯一性/相关性Key words
traveling wave/single-end/protection and fault location/time and frequency multi-scale/uniqueness/correlation分类
信息技术与安全科学引用本文复制引用
邓丰,李欣然,曾祥君,冷阳,倪砚茹,马士聪..基于波形唯一和时–频特征匹配的单端行波保护和故障定位方法[J].中国电机工程学报,2018,38(5):1475-1487,后插21,14.基金项目
国家重点研发项目(2016YFB0900600) （2016YFB0900600）
国家自然科学基金项目(51737002, 51425701, 51577013). National Key Research and Development Plan of China (2016YFB0900600) （51737002, 51425701, 51577013）
The National Natural Science Foundation Fund for Distinguished Young Scholars (51737002, 51425701, 51577013). （51737002, 51425701, 51577013）
