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

从1985年开始，对输电线路及其防护装置进行了触发雷击放电的实验。1985年冬，成功地进行了共15次雷电试验，包括接地线的击雷试验。1986年冬季，将试验地点移至海拔约1000米的奥久久山，12月4日在世界上首次成功地进行了撞击500KV输电线的试验。在实验中，研究了从火箭牵引钢丝底部到输电塔臂端触发闪电的新技术。1987年冬天，实验继续进行，成功触发了11次，其中包括4次对塔放电，1次对地线放电。和一个放电到相导体。实现接地导线的漏电屏蔽和放电电流对接地导线的破坏对相导体的冲击是一个重要的经验。在实验室尺度上，通过放电电流对ZnO元件的破坏，成功地进行了两次对避雷器的冲击试验。同时测量了塔和地线的放电电流、导线绝缘子之间和塔根与地之间的感应电压，并测量了地面的放电电流和电场，并对放电进行了相应的记录和照相。

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.