高压电器2012，Vol.48Issue(1)：76-81,6.
基于振动信号EMD-HT时频分析的变压器有载分接开关故障诊断
Fault Diagnosis of Power Transformer On-load Tap Changer Based on EMD-HT Analysis of Vibration Signal
摘要
Abstract
A list of time series data is decomposed into an eigen modal functions group through the empirical mode decomposition (EMD), then Hilbert transformation (HT) is adopted to get the signal frequency spectrum analysis method of reference to the transformer on-load tap changer switching mechanism of vibration signal analysis field. The authors introduces the theory and method of the algorithm, the first of the method of simulation signal simulation test, and then apply the time-frequency analysis which is based on the method of EMD-HT to a testing fault vibration signal analysis of the switching mechanism of the OLTC. Through the simulation signal and the example analysis shows that, with EMD-HT time-frequency analysis method for transformer on-load tap-changer vibration signal of the fault feature extraction is effective.关键词
有载分接开关/振动信号/经验模态分解/希尔伯特变换/时频分析Key words
OLTC/ vibration signal/ empirical mode decomposition/ Hilbert transformation/ time-frequency analysis分类
信息技术与安全科学引用本文复制引用
张惠峰,马宏忠,陈凯,王春宁,高鹏..基于振动信号EMD-HT时频分析的变压器有载分接开关故障诊断[J].高压电器,2012,48(1):76-81,6.基金项目
江苏省电力公司重点科技项目(J2008039). （J2008039）
