| 基于小波变换的含噪声行波信号奇异点检测 |
| |
| 引用本文： | 姜晟,舒乃秋,胡芳,周静.基于小波变换的含噪声行波信号奇异点检测[J].电网技术,2004,28(10):59-62. |
| |
| 作者姓名： | 姜晟 舒乃秋 胡芳 周静 |
| |
| 作者单位： | 武汉大学电气工程学院,湖北省,武汉市,430072;武汉大学电气工程学院,湖北省,武汉市,430072;武汉大学电气工程学院,湖北省,武汉市,430072;武汉大学电气工程学院,湖北省,武汉市,430072 |
| |
| 摘 要： | 小波变换是检测信号奇异点的一种有效的数学工具.对于含噪声电流行波信号奇异点的检测,则需要一个基于小波变换的有效算法.作者在非线性阀值法去噪的基础上利用模极大值线的方法正确地检测出含噪声行波信号的奇异点,并通过数字仿真验证了此方法的实用性.
|
| 关 键 词： | 小波变换 奇异点 模极大值线 行波 |
| 文章编号： | 1000-3673(2004)10-0059-04 |
| 修稿时间： | 2003年7月2日 |
A WAVELET TRANSFORM BASED SINGULARITY DETECTION OF TRAVELING WAVE SIGNAL CONTAINING NOISE |
| |
| JIANG Sheng,SHU Nai-qiu,HU Fang,ZHOU Jing.A WAVELET TRANSFORM BASED SINGULARITY DETECTION OF TRAVELING WAVE SIGNAL CONTAINING NOISE[J].Power System Technology,2004,28(10):59-62. |
| |
| Authors: | JIANG Sheng SHU Nai-qiu HU Fang ZHOU Jing |
| |
| Abstract: | Wavelet transform is an efficient mathematical tool for singularity detection. In order to detect the singularity of the traveling wave current containing noise an efficient algorithm based on wavelet transform is needed. In this paper, a method using modulus maximum line based on the de-noising by nonlinear threshold is presented, by which the singularity of the traveling wave signal containing noise can be accurately detected. The practicality of the presented method is validated by digital simulation. |
| |
| Keywords: | Wavelet transform: Singularity Modulus maximum line Traveling wave |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
