避雷针和半导体消雷器的火箭引雷试验分析

Analysis of Test Results on Rocket Triggered Lightning to Lightning Rod and Semiconductor Lightning Eliminator

介绍了对普通避雷针和半导体消雷器进行的火箭引雷试验,列出了全部试验结果,包括用普通照相机的B门进行静态拍摄所得的典型照片以及用示波器记录的雷电流波形。讨论了雷击半导体消雷器和普通避雷针间的显著差别,说明半导体消雷器具有极大的限流能力。

The paper introduces the rocket triggered lightning test to conventional lightning rod and a novel lightning protection device called semiconductor lightning eliminator （SLE）, which has the ability to limit lightning current. Tests to conventional lightning rod were carried out in 1998. In order to make triggered lightning more approaching to natural lightning, method of triggered in altitude （i. e. the steel wire was connected to lightning rod through 100 m nylon wire） was used. Tests to SLE were carried out in 1999. For the purpose of raise the success possibility classic triggered method （i. e. the steel wire was suppose to be directly connected to SLE） was used, though it was more serious to SLE. Typical photographs of triggered lightning on conventional lightning rod and SLE taken by a static camera using B shutter are shown. The phenomena recorded by video recorder are expounded. The current waveforms obtained by oscillograph are also given in the paper. The different lightning discharge characteristics between conventional lightning rod and SLE are discussed. The tests show a considerable difference between triggered lightning on the conventional lightning rod and SLE. The lightning current limiting ability of SLE is confirmed by the tests. The result is of importance in the improvement of lightning protection terminal systems.