摘要
以小波变换为工具提取故障后的行波信息 ,并通过小波变换实现行波幅值比较式方向保护。对其在线路结构、故障初始角度、接地电阻等不同影响因素作用下的动作情况进行了详细的分析和仿真。结果表明 ,利用小波变换后该原理是切实可行的。
The principle of directional protective relaying based on wavelet transform for detection of fault information and amplitude com parison of travelling wave is presented. The effect of some factors such as line structure,fault- inception angle and fault resistance etc,is analyzed. Considering each factor,the principle is sim ulated and the results indicate that factors have little effect on the directional protective relaying,and above all,by using wavelet transform,this principle is feasible.
出处
《电力系统自动化》
EI
CSCD
北大核心
2000年第17期11-15,64,共6页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目!(5 98770 2 0 )&&
关键词
方向保护
小波变换
输电线路
行波幅值
继电保护
travelling wave
amplitude com parison
directional protective relaying
wavelet transform
