The effects of nonstandard lightning voltage waveshapes on the impulse strength of short air gaps
The effects of nonstandard lightning voltage waveshapes on the impulse strength of short air gaps
复制标题
非标准雷电压波形对短气隙冲击强度的影响
DOI：
10.1109/61.329531
复制
发表时间：
1994
影响因子：
4.4
通讯作者：
B. Mcconnell
中科院分区：
文献类型：
--
作者：
P. Chowdhuri;A. K. Mishra;P. Martin;B. Mcconnell
球-球、棒-棒和棒-平面的气隙，每一个都有5厘米长，用两个极性的8个电压波的雷击浪涌进行了测试。被测气隙的临界击穿电压水平在雷击浪涌的特定波前范围内达到最小平台。观察到快锋波击穿的长时间延迟和慢锋波击穿的短时间延迟。这些现象将严重影响电力设备和系统的绝缘配合。>
Sphere-sphere, rod-rod and rod-plane air gaps, each 5-cm long, were tested with lightning surges of eight voltage waves of both polarities. The critical breakdown voltage levels of the tested air gaps attained a minimum plateau within a specific range of wavefronts of the lightning surges. Long time delays of breakdown for the fast-front and short time delays for the slow-front waves were observed. These phenomena would significantly affect the insulation coordination of the power apparatus and systems. >