Lightning Traveling Wave Monitoring in Metro Elevated Section

Based on the application of lightning traveling wave monitoring system in Dashengguan bridge section of Nanjing Metro Line S3 and the recorded data of the existing lightning traveling wave monitoring system, the waveform analysis, wavelet packet energy-spectrum analysis and the derivation of the formula of lightning strike point location in the transmission process of the lightning traveling wave current in the catenary traction power supply line are expounded. The application of the lightning traveling wave monitoring system in Nanjing Metro Line S3 elevated section catenary traction power supply circuit and specific implementation solutions are introduced.