Striking Test to Power Transmission Line and Protection Equipment by Rocket Triggered Lightning

从1985年开始，对输电线路及其保护装置进行了雷电放电触发试验。在1985年冬季，成功地进行了15次雷击试验，其中包括雷击地线试验。1986年冬季，实验地点转移到海拔约1000米的奥芝山，并于12月4日成功地进行了世界上第一次500 KV输电线路的试验。为了进行试验，研制了从火箭牵引的钢丝底部到输电塔臂尖的引雷新技术，在1987年冬季连续进行了11次引雷成功，其中4次引雷到输电塔，1次引雷到地线。以及一个放电到相导体。实现了避雷线漏绕击穿相线和放电电流击穿相线的重要经验，并在实验室规模以上的放电电流击穿氧化锌元件的情况下，对避雷器进行了两次击穿试验。同时测量了杆塔和地线的放电电流、线路绝缘子两端及杆塔根部与地面间的感应电压，以及地面的放电电流和电场，并记录了放电的照片和记录。

From 1985 the experiment triggering the lightning discharge to power transmission line and the protection equipments has been carried out. In the winter or 1985, the experiment of lightning to totalling to 15, including the striking test to ground wire, has been performed successfully. In the winter of 1986, the site of experiment was shifted to the Okushishiku mountain at the altitude of about 1000 meters and the experiment striking the power transmission line of 500KV was successfully performed on 4th of December as the first trial in the world. For the experiment new techniques were developed to trigger lightning fromthe bottom of steel wire trailed by rocket to the tip of arm of transmission tower.In the winter of 1987, the experiment was countinued with eleven successful triggerings, which included four discharges to tower, one discharge to ground wire. and one discharge to phass conductor. It was an important experience to realize the striking to phase conductor by a miss-shielding of ground wire together with the damage of the ground wire by discharge current.Two times of striking test to arresxtors were also perfomed auccessfully with the damage of ZnO elements by the discharge current over a loboratory scale. The discharge currents flowing tower and ground wire, and the voltages induced across the line insulators and between tower root and ground, were measured in the same time with the measurements of the discharge current and electric field at ground together with the accorstic and photograghic records of the discharge.