基于形态-小波的行波差动保护的研究  

Research on Traveling Wave Differential Protection Based on Morphology-wavelet

作　　者：田兴瑞[1] 杨富宇[1] 姚维为[1] 董文静[1] 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《电气技术》2013年第7期21-25,共5页Electrical Engineering

摘　　要：本文对传统的行波差动保护原理进行改进,研究基于行波波头的差动保护算法,该算法紧需向对端传输少量的初始波头数据,就能够提高保护的可靠性和速动性。先通过形态前置滤波器将行波信号从各种噪声背景中提取出来,然后用小波变换检测信号奇异性,运用基于形态-小波的行波差动保护方案进行仿真研究。This paper analyzes the traditional wave differential protection principle and put forward an improvement. This algorithm only transfer a small amount of head data on initial wave algorithm to enhance the index in reliability and speed. Wave signal from all kinds of noisy environment is extracted through the morphological pre-filter. After detecting the signal singularity through wavelet transform, the signal can be used in the simulation about traveling wave differential protection based on morphology-wavelet.

关 键 词：行波 差动保护 小波变换 

分 类 号：TM773[电气工程—电力系统及自动化]