10 kV配电架空线路雷击过电压辨识及故障定位

Research on Lightning Overvoltage Identification and Fault Location of 10 kV Distribution Overhead Lines

通过对静电分量和电磁分量的分析,提出了一种改进的感应雷击过电压数值计算模型。进行仿真分析和实际应用验证,结果表明该改进模型能够准确计算感应雷击过电压。同时,运用小波函数提出了一种过激过电压辨识方法,并将改进模型和辨识方法应用于10 kV配电架空线的雷击过电压故障定位。通过验证,证明了该方法的有效性和可行性。

By analyzing the electrostatic and electromagnetic components an improved numerical calculation model of induced lightning strike overvoltage is proposed.Simulation analysis and practical application verification are carried out,the results show that the improved model can accurately calculate the induced lightning strike overvoltage.Meanwhile,the article proposes an over-excitation over-voltage identification method using wavelet function,and applies the improved model and identification method to the lightning over-voltage fault localization of 10 kV distribution overhead line.The validity and feasibility of the method are proved through verification.