Electric Power ›› 2016, Vol. 49 ›› Issue (1): 80-84.DOI: 10.11930/j.issn.1004-9649.2016.01.080.05

• Power System • Previous Articles     Next Articles

Research on the Features of Lightning Electromagnetic Wave Coupled with Cable Based on HHT

CHEN Zehuang1, 2, ZHANG Yunfeng1, 2, ZHOU Zhongshan1, 2, CAO Hongliang1, 2   

  1. 1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing, 210044, China;
    2. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Received:2015-09-09 Online:2016-01-18 Published:2016-02-04
  • Supported by:
    This work is supported by National Basic Research Program of China (973 Program) (No. 2014CB441405).

Abstract: To explore the overvoltage frequency domain features caused by lightning electromagnetic wave (LEMW) coupled with overhead line, an experimental installation to receive the intra-cloud lightning is installed outdoors. In this paper, the Hilbert-Huang Transform (HHT) is used to analyze the electromagnetic wave coupled with cable. The results show that the lightning electromagnetic wave coupled with cable appears in damped oscillation and the spectrum concentrates in 2 μs. The energy of lightning electromagnetic wave by HHT concentrates in 1.65~3.2 MHz and 3.5~6.5 MHz, which is different from the 5~9 MHz by FFT. Compared with the results by FFT, the HHT, giving the more detailed spectrum, is more suitable for analyzing LEMW coupled with cable.

Key words: electric power system, lightning electromagnetic wave, cable, coupling, HHT, EMD

CLC Number: