动力电缆线路防雷接地技术研究

Research on Lightning Protection and Grounding Technology of Power Cable Line

电缆线路遭受雷击会导致工业、农业等行业用电需求无法得到满足,还会影响电网安全运行。目前的电缆线路防雷接地技术存在防雷性能较低的问题,如若发生雷击灾害对电缆线路造成的破坏程度较深。文章通过分析动力电缆线路的防雷接地技术,以改造杆塔接地电阻、设置动力电缆绝缘方式和架设输电线路避雷装置的方式,实现动力电缆线路防雷接地技术的应用。将3种传统防雷接地技术与文中技术进行实验对比,实验结果表明,文中防雷接地技术的防雷性能比3种传统技术均高出3.66%~7.03%不等,因此文中技术更加有效。

Lightning strike on cable lines will lead to the power demand of industry,agriculture and other industries can not be met,and also affect the safe operation of power grid.At present,the lightning protection and grounding technology of cable line has the problem of low lightning protection performance,such as the damage degree of cable line caused by lightning disaster is relatively deep.This paper puts forward the research on lightning protection and grounding technology of power cable line.By analyzing the lightning protection and grounding technology of power cable line,the application of power cable line lightning protection and grounding technology is realized by transforming tower grounding resistance,setting power cable insulation mode and erecting transmission line lightning protection device.The experimental results show that the lightning protection performance of the three traditional lightning protection and grounding technologies is 3.66%~7.03%higher than the three traditional technologies,so the technology in this paper is more effective.