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Application of multiwaves theory for the fault location in transmission line
Author(s): 
Pages: 26-32
Year: Issue:  13
Journal: POWER SYSTEM PROTECTION AND CONTROL

Keyword:  多小波小波故障定位输电线路;
Abstract: 多小波分析是基于小波理论发展起来的新理论,多小波保持了单小波所具有的良好的时域与频域的局部化特性,又克服了单小波的缺陷,多小波可同时具有光滑性、对称性、正交性、短支撑性,高阶消失矩等属性,由于多小波具有对称性,因此多小波变换具有线性相位,同时多小波具有正交性,因此多小波变换计算速度较快,能够满足继电保护的速动性,因此用多小波进行输电线的故障定位,有利于提高故障定位的精度和速度,本文进行了多小波定位的数字仿真实验,验证了多小波定位结果不受故障类型,故障点位置,过渡电阻和故障合闸角的影响,并和小波定位结果进行了对比,验证了利用多小波进行故障定位,定位精度要比用小波定位精度高.
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