【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。更多还原

【Abstract】 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.更多还原