Flashover Pattern Recognition by HMM Based on Spectrum Characteristics of Leakage Current on HV Insulators
With the increase of voltage grade in power transmission system and the aggravation of industrial pollution, flashover of contaminated insulators in HV and UHV system is more and more serious, threatening the security of power transmission severely. The key of improving the security of system is exploring the methods of monitoring and recognizing states of insulators surface by some character values. In this paper, multi-characteristic Hidden Markov Model is founded with spectrum and bispectrum characteristics of leakage current(LC), through which the flashover patterns are recognized during the developing stages. The results show that spectrum characteristics HMM recognized flashover pattern efficiently and successfully, and that is useful to help related stuff to make correct decision and ensure the security of power delivery.
spectrum bispectrum flashover HMM leakage current pattern recognize
Ali Hui Hui Lin
School of Electrical and Control Engineering Xian University of Science and Technology Xian, China School of Automation Northwest Polytechnical University Xian, China
国际会议
太原
英文
315-319
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）