Electromagnetic interference of lightning pulse electromagnetic field to sensitive equipment in power stations

被引：0
|
作者：
机构：
[1] State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Tsinghua University
[2] Electrical Power Research Institute, China Southern Power Grid Co., Ltd.
来源：
Zhang, X. (zhangxiaothu@126.com) | 1696年 / Science Press卷 / 40期
关键词：
Electromagnetic compatibility; Electromagnetic interference; Lightning; Probability; Pulse electromagnetic field; Return-stroke model;
D O I：
10.13336/j.1003-6520.hve.2014.06.013
中图分类号：
学科分类号：
摘要：
In order to evaluate the interference of lightning electromagnetic impulse (LEMP) on electromagnetic-sensitive equipment, we investigated the characteristics of the pulsed electromagnetic fields in both nearby and faraway areas when lightning striked the earth. The calculated results of different return-stroke models were compared and analyzed. Then we extracted the effective jamming component of LEMP and compared it with the regulated electromagnetic compatibility threshold. Considering the shielding effectiveness of equipment shell and wall, as well as the statistics data of the lightning activities in Guangdong Province, China, we analyzed the electromagnetic interference (EMI) and failure probability when lightning of various channel currents strikes the earth at different distances. The results show that, when the shielding effectiveness is 20 dB and the lightning strike occurs farther than 300 m away from the center of sensitive equipment, the lightning current has to be larger than 150 kA to cause excessive EMI. Taking into account the lightning strikes in a scope up to 200 km distance from a power station, we calculated the total over-standard rate of EMI to sensitive equipment in the station, which is 0.006 and 2.2×10-5 times per year for the cases of 20 dB and 40 dB shielding effectiveness, respectively.
引用
收藏
页码：1696 / 1702
页数：6
相关论文
共 21 条
  • [1] Lu J., Yuan H., Lu J., Et al., Electromagnetic protection technology of data acquisition system in UHVDC environment, High Voltage Engineering, 39, 12, pp. 2994-2999, (2013)
  • [2] Zhang W., Yu Y., Li G., Et al., Researches on UHVDC technology, Proceedings of the CSEE, 27, 22, pp. 1-7, (2007)
  • [3] Wilson C.R.T., On some determinations of the sign and magnitude of electric discharge in lightning flashes, Proceedings of the Royal Society of London, 92, 644, pp. 555-574, (1916)
  • [4] Uman M.A., Mclain D.K., Krider E.P., The electromagnetic radiation from a finite antenna, American Journal of Physics, 43, 1, pp. 33-38, (1975)
  • [5] Cooray V., Horizontal fields generated by return strokes, Radio Science, 27, pp. 529-537, (1992)
  • [6] Rubinstein M., An approximate formula for the calculation of the horizontal electric field from lightning at close, intermediate and long ranges, IEEE Transactions on Electromagnetic Compatibility, 38, 3, pp. 527-539, (1996)
  • [7] Wait J.R., Concerning the horizontal electric field of lightning, IEEE Transactions on Electromagnetic Compatibility, 39, 2, pp. 185-187, (1997)
  • [8] Wan B., Xie H., Fan L., Et al., Electromagnetic environment and corona control measures of UHV substation, High Voltage Engineering, 36, 1, pp. 109-116, (2010)
  • [9] Li N., Peng Z., Du J., Et al., Simulate calculation and distribution of power frequency electric field in UHV substation, High Voltage Engineering, 38, 9, pp. 2178-2189, (2012)
  • [10] Wang Z., Liu S., Sun J., Calculation of power frequency electric field near equipments in UHV AC substations, High Voltage Engineering, 36, 1, pp. 81-86, (2010)
123