中国电机工程学报2016，Vol.36Issue(7)：1842-1848,7.DOI:10.13334/j.0258-8013.pcsee.2016.07.010
基于行波瞬时频率的高压直流输电线路故障测距方法
Fault Location Method Based on Traveling-wave Instantaneous Frequency for HVDC Transmission Lines
摘要
Abstract
In the transmission line fault location based on traveling wave, the organic unity between the arrival time of the traveling wave and the wave speed is a serious problem. The relationship of instantaneous frequency and the wave speed was analyzed. On the basis, a novel traveling wave fault location algorithm for HVDC transmission lines was proposed, in which the organic unity of the arrival time of wave-front and wave speed was considered. The improved Hilbert-Huang transform was used to obtain the time frequency diagram, through which the arrival time of the traveling wave and the instantaneous frequency was determined. Then the wave speed was obtained by the corresponding instantaneous frequency. The algorithm has been performed for a large amount of simulation cases in PSCAD. Results show that the proposed method is independent to transition resistance and fault type, and the fault location accuracy is high at different fault distance. This algorithm is also verified by field-recorded data.关键词
高压直流/行波/瞬时频率/故障测距/改进希尔伯特-黄变换Key words
high voltage direct current (HVDC)/traveling-wave/instantaneous frequency/fault location/improved Hilbert-Huang transform (IHHT)分类
信息技术与安全科学引用本文复制引用
段建东,刘静,陆海龙,赵召..基于行波瞬时频率的高压直流输电线路故障测距方法[J].中国电机工程学报,2016,36(7):1842-1848,7.基金项目
国家自然科学基金项目(50707026)；陕西省重点学科建设专项资金资助项目(5X1201)；陕西省自然科学基础研究计划项目(2014JM7255)；陕西省教育厅服务地方专项计划项目(2013JC24)。 Project Supported by the National Natural Science Foundation of China (50707026) （50707026）
Shaanxi Key Discipline Construction Special Funds (5X1201) （5X1201）
Shaanxi Province Natural Science Basic research program (2014JM7255) （2014JM7255）
Local Service Industrialization Special Plan of Shaanxi Education Department (2013JC24) （2013JC24）
