【摘要】 为了满足基于OPGW偏振态信号的输电线路雷击点定位的技术要求,根据雷击OPGW产生的偏振态突变信号特征,利用Matlab对峰值检测法和希尔伯特-黄变换法进行仿真研究,在研究的基础上提出了一种基于小波变换模极大值的定位方法。通过仿真分析,对比了三种算法的优缺点,结果表明小波变换的效果最优,可将雷击定位误差控制在米量级。更多还原

【Abstract】 To meet the technical requirements of lightning strike point location of transmission line based on OPGW polarization state signal,based on the characteristics of polarization state abrupt signal generated by lightning strike OPGW,the peak detection method and Hilbert-Huang transform method are simulated by Matlab. A positioning method based on wavelet transform modulus maxima is proposed. Through simulation analysis,the advantages and disadvantages of the three algorithms are compared. The results show that the wavelet transform has the best effect and can control the lightning strike positioning error to the order of meters.更多还原