Observation and analysis of lightning induced overvoltage on buried cables

yu hui; dong wansheng; chen shaodong; wang jianguo; zhang yijun; zhang yang; zhou mi; sun zhen; deqing cuomu

Volume 22 Issue 10

Sep. 2010

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Abstract

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Article Navigation > High Power Laser and Particle Beams > 2010 > 22(10): 0-

yu hui, dong wansheng, chen shaodong, et al. Observation and analysis of lightning induced overvoltage on buried cables[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

yu hui, dong wansheng, chen shaodong, et al. Observation and analysis of lightning induced overvoltage on buried cables[J]. High Power Laser and Particle Beams, 2010, 22.

yu hui, dong wansheng, chen shaodong, et al. Observation and analysis of lightning induced overvoltage on buried cables[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

yu hui, dong wansheng, chen shaodong, et al. Observation and analysis of lightning induced overvoltage on buried cables[J]. High Power Laser and Particle Beams, 2010, 22.

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Observation and analysis of lightning induced overvoltage on buried cables

1.
Chinese Academy of Meteorological Sciences,Beijing 100081,China;
2.
Beijing Meterological Bureau,Beijing 100089,China;
3.
Lightning Protection Center of Guangdong Province,Guangzhou 510080,China;
4.
High Voltage and Insulation Research Institute,Wuhan University,Wuhan 430072,China;
5.
East China Electric Power Design Institute,Shanghai 200063,China;
6.
Lightning Protection Center of Naqu,Naqu 853500,China

Publish Date: 2010-09-03

Abstract

Abstract

The experiments have been conducted about lightning electromagnetic pulse (LEMP) coupling to buried cables in the depth of 0.5 m. The test system and the measurement method are both introduced, and the lightning induced overvoltages at the end of the buried cables are analyzed. The cables are used in automatic weather stations, i.e. the power cable without shielding layer, the signal cable with a braided copper shield and the control cable with a steel shield. Relative to the peak voltage induced on the power cable, the peak voltages induced on the control cable and the signal cable are 65% and 26% respectively. The peak induced overvoltage of the three cables has a similar trend in the initial stage of the LEMP. The steel belt shielding layer can effectively reduce 400 kHz～1 MHz componen
- lightning electromagnetic pulse,
- coupling,
- buried cables,
- induced overvoltage,
- shielding

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