摘要
通过分析小波基函数的性质,选取了Symlets小波基和Coiflets小波基在相同的条件下对局部放电仿真信号进行小波变换分析.仿真结果表明:Symlets小波基更适合局部放电信号的分析,可以得到更理想的分析结果,也为下一步进行局部放电信号特征提取和处理打下了良好的基础.
Symlets and Coiflets wavelet bases are selected by analyzing the nature of wavelet functions.Under the same conditions,the simulated PD signal is analyzed by wavelet transform.The results of simulation show that the Symlets wavelet basis is more suitable for the analysis of the PD signals and can get better results.At the same time,the research on the wavelet basis has laid a good foundation for the next PD signal feature extraction and processing work.
出处
《天津工业大学学报》
CAS
北大核心
2011年第3期72-75,共4页
Journal of Tiangong University
基金
天津市科技支撑计划重点项目(10ZCKFGX02700)
关键词
变压器
局部放电
小波分析
在线监测
小波基
小波变换
transformer
partial discharge(PD)
wavelet analysis
online monitoring
wavelet basis
wavelet transform