杭州地区输电线路雷击故障原因及对策

分析了杭州地区110~500kV输电线路雷击跳闸原因,并根据该地区雷电活动的特点制定了相应的防雷改造对策,通过采用"改造接地电阻为主,加装避雷器为辅"的防雷措施,大幅度提高杆塔的反击耐雷水平,有效防止线路绕击,降低了线路雷击跳闸率。

Transmission Line Lightning Fault Causes and Countermeasures in Hangzhou Area

Analysis was made to 110~500 kV transmission line lightning tripping causes in Hangzhou area and according to the features of the area lightning activities, this paper laid down the corresponding anti-lightning reform countermeasures. Via adoption of anti-lightning measures as reforming grounding resistance as the main;additionally installing arrestors as the assistance, the anti-lighting level of pole tower was greatly lifted, which effectively prevents lines from winding lighting, reducing line lighting tripping rate.