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A New Suppression Method for Narrow-Band Interference in Partial Discharge Signals With Chaotic Oscillator
Author(s): 
Pages: 88-92
Year: Issue:  2
Journal: TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY

Keyword:  电力设备局部放电窄带干扰混沌振子;
Abstract: 如何有效地从现场大量的干扰中真实地提取局部放电信号,至今仍是提高在线监测系统的灵敏度和监测可靠性的难题.本文从非线性理论出发,提出用混沌振子去除局部放电信号中窄带干扰的新思路.讨论了用于判断混沌振子状态变化的Lyapunov指数的计算方法,仿真实验表明混沌振子对局部放电信号中的窄带干扰具有较强的敏感性,对局部放电信号和白噪声具有免疫力,能在保证原始局部放电信号失真较小的同时有效地去除窄带干扰.
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