摘要
行波故障测距需对行波信号进行采样,采样率往往取得较高,易受到各类噪声的影响。为了克服传统方法和小波方法在抑制噪声方面的不足,引入数学形态学理论。在故障行波上模拟噪声,比较形态学和小波变换算法对各种行波噪声干扰的抑制效果。仿真结果证明形态学算法滤除脉冲干扰的优越性明显,滤除白噪声的效果比小波算法略优。
In order to overcome the shortcomings of the traditional method in eliminating the noise of the traveling wave, a novel algorithm named mathematical morphology is introduced. The algorithm aims to improve the filter performance when such a filter is applied to filter random and pulsed noises contained in traveling wave. Mathematical morphology is more effectively compared with wavelet morphology on pulsed noises.
出处
《继电器》
CSCD
北大核心
2005年第17期21-26,共6页
Relay
基金
南京理工大学科研发展基金资助项目
关键词
数学形态学
小波分析
行波
测距
mathematical morphology
wavelet analysis
traveling wave
fault location
