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| CHARACTERISTICS ANALYSIS OF THE INDUCED OVERCURRENT GENERATED BY CLOSE TRIGGERED LIGHTNING ON THE OVERHEAD TRANSMISSION POWER | |
| 作者姓名： | 杨少杰 陈绍东 张义军 董万胜 王建国 周 蜜 王孝波 余 晖 |
| 作者单位： | YANG Shao-jie,CHEN Shao-dong,WANG Xiao-bo(Lightning Protection Center of Guangdong Province, Guangzhou 510080 China);ZHANG Yi-jun,DONG Wan-sheng,YU Hui(Chinese Academy of Meteorological Sciences, Beijing 100081 China);WANG Jian-guo,ZHOU Mi(High Voltage and Insulation Research Institute of Wuhan University, Wuhan 430072 China) |
| 基金项目： | A key project of China Meteorological Administration，Specialized Science Project for Public Welfare Industries，Key Science Project of the Guangzhou Regional Meteorological Center |
| 摘 要： | Techniques of artificially-triggered lightning have provided a significantly useful means to
directly measure various physical parameters of lightning discharge and to conduct research on protection
methods of lightning electromagnetic pulses. In this study, using capacitive and resistive dividers, current
probes and optical fiber transmission devices, we measured and analyzed the induced overvoltage on the
overhead transmission line and the overcurrent through Surge Protective Devices (SPD) when a lightning
discharge was artificially triggered nearby on August 12, 2008 at Conghua Field Lightning Experiment Site.
The triggered lightning discharge contained an initial current stage and eight return strokes whose peak
currents ranged from 6.6kA to 26.4kA. We found that overcurrents through SPD were induced on the
power line both during the initial continuous current stage and the return stroke processes. During the
return strokes, the residual voltage and the current through the SPD lasted up to the ms (millisecond) range,
and the overcurrents exhibited a mean waveform up to 22/69μs with a peak value of less than 2kA. Based
on the observed data, simple calculations show that the corresponding single discharge energy was much
greater than the values of the high voltage pulse generators commonly used in the experiments regulated
for SPD. The SPD discharge current peak was not synchronous to that of the residual voltage with the
former obviously lagging behind the latter. The SPD discharge current peak was well correlated with the
triggered lightning current peak and the wave-front current gradient. The long duration of the SPD current
is one of the major reasons why the SPD was damaged even with a big nominal discharge current. |
| 关 键 词： | 陈绍 |
CHARACTERISTICS ANALYSIS OF THE INDUCED OVERCURRENT GENERATED BY CLOSE TRIGGERED LIGHTNING ON THE OVERHEAD TRANSMISSION POWER |
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| YANG Shao-jie,CHEN Shao-dong,ZHANG Yi-jun,DONG Wan-sheng,WANG Jian-guo,ZHOU Mi,WANG Xiao-bo and YU Hui.CHARACTERISTICS ANALYSIS OF THE INDUCED OVERCURRENT GENERATED BY CLOSE TRIGGERED LIGHTNING ON THE OVERHEAD TRANSMISSION POWER[J].Journal of Tropical Meteorology,2010,16(1):59-65. | |
| Authors: | YANG Shao-jie CHEN Shao-dong ZHANG Yi-jun DONG Wan-sheng WANG Jian-guo ZHOU Mi WANG Xiao-bo and YU Hui |
| Institution: | 1. Lightning Protection Center of Guangdong Province, Guangzhou 510080 China 2. Chinese Academy of Meteorological Sciences, Beijing 100081 China 3. High Voltage and Insulation Research Institute of Wuhan University, Wuhan 430072 China |
| Abstract: | Techniques of artificially-triggered lightning have provided a significantly useful means to directly measure various physical parameters of lightning discharge and to conduct research on protection methods of lightning electromagnetic pulses.In this study,using capacitive and resistive dividers,current probes and optical fiber transmission devices,we measured and analyzed the induced overvoltage on the overhead transmission line and the overcurrent through Surge Protective Devices(SPD) when a lightning dis... |
| Keywords: | triggered lightning overhead transmission line SPD induced overcurrent |
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