基于故障暂态电压的故障选相算法的研究  

Research on a fault phase selection algorithm based on fault transient voltage

作　　者：陈茂英[1] 杨明玉[1] 张新国[1] 胡巨[1] 

机构地区：[1]华北电力大学电气工程学院,河北保定071003

出　　处：《继电器》2005年第5期4-7,46,共5页Relay

摘　　要：讨论了各种故障类型下的高频暂态电压的特征,提出一种利用小波变换的暂态电压选相新算法。该算法利用暂态电压模分量的小波模极大值和各相电压的李氏指数值,从而可以实现可靠选相。对某典型的500kV线路进行了仿真,结果表明,该算法在各种故障条件下均能准确、快速地选相。On analysing the characteristic of high frequency transient voltage of various fault types, this paper puts forward a new fault phase selection algorithm based on transient voltage with wavelet transform. Using the wavelet modular maxima of transient voltage modular components and the Lipschitz exponents of transient voltage of each phase, reliable phase selection can be realized. The paper simulates a typical 500 kV transmission line and the results verify that the algorithm is correct and fast.

关 键 词：故障选相 暂态电压 小波变换 

分 类 号：TM744[电气工程—电力系统及自动化]