不同接线模式下多级SPD冲击试验结果对比分析  

Comparison and Analysis of Multi Stage SPD Impulse Test Results under Different Connection Modes

作　　者：付宗见[1] FU Zongjian(Zhengzhou Railway Vocational ＆ Technical College, Zhengzhou 451460, China)

机构地区：[1]郑州铁路职业技术学院,郑州451460

出　　处：《电瓷避雷器》2018年第2期31-34,共4页Insulators and Surge Arresters

基　　金：河南省科技攻关研究项目(编号:2011C510003)

摘　　要：利用气体放电管、ZnO压敏电阻与TVS管配合退耦原件构成的多级SPD,通过1.2/50μs、8/20μs组合波对其进行限制电压和组合波冲击试验。研究表明:在1.2/50μs开路电压波冲击下,线-地之间限制电压保持在450 V左右,线-线之间的限制电压可以维持在40 V左右;在组合波冲击实验下,线-地模式和线-线模式下,实际冲击试验中的残压总体相差不大,都是随着冲击电压的升高呈上升趋势,两种模式下的通流容量尽管都随着冲击电压的升高呈上升趋势,但在同等冲击电压下,通流容量差异却很大。A multistage a decoupling element is inves SPD consisting of a gas discharge tube, a ZnO varistor and a TVS tube with tigated. The limiting voltage and the combined wave impulse test are carried out by the 1.2/50μs and 8/20 μs combined wave. The results show that： under the 1.2/50μs open circuit voltage wave, the line-ground limiting voltage maintained at about 450 V. The line-line limiting voltage can be maintained at around 40 V; in combination of impulse wave experiment, the residual voltage in the actual impulse test in line-ground mode and line-line mode is almost the same, both of them are increasing with the rising of the impulse voltage, although the flow capacity in both modes increases with the rising of impulse voltage, the difference of flow capacity under the same impulse voltage is very large.

关 键 词：多级SPD 组合波 限制电压 通流容量 

分 类 号：TM862[电气工程—高电压与绝缘技术]