500kV架空输电线路杆塔接地电阻整治技术

Technique of Grounding Resistance for 500kV Overhead Transmission Line Tower

温州地区属于雷电灾害多发地区,温州地区管辖110~500k V线路,由雷击引起线路故障跳闸数约占线路每年故障总数的50%以上,对整个电网的安全运行与供电可靠性造成极大的影响。温州供电公司坚持"安全第一、预防为主、团结协作、科学应对"的方针,以提高输电线路防雷性能为首要任务,科学合理地开展线路防雷改造工作,包括对线路接地排查和整治,最大程度地降低雷电对杆塔的威胁。

Wenzhou area belongs to the lightning disaster prone area, Wenzhou area is under the jurisdiction of 110kV to 500 kV line, line fault tripping caused by lightning strikes accounted for about 50% of the total annual line above the fault, which greatly affect safe operation and reliability of the whole power grid. Wenzhou power company adhere to ＂safety and prevention first, unity cooperation, scientific re sp onse＂ policy, take improving the lightrfing protection performance oftransmissionlines as the primary task, carry out the lightning protection transformation of the line scientitically and rationally, including the line ground investigation and remediation, so as to minimize the threat of lightning to the towers.