电涌保护器级间退耦元件的冲击损伤分析  

Impulse Damages Analysis of the Decoupling Component Between Multi-level SPD

作　　者：王成芳[1,2] 余建华[1] 强裕君 吕振东[1] 刘珊[2] WANG Chengfang YU Jianhua QIANG Yujun LYU Zhendong LIU Shan(Jiangxi Meteorological Bureau, Nanchang 330046, China Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing 210044, China)

机构地区：[1]江西省气象局,南昌330046 [2]中国气象局气溶胶-云-降水重点开放实验室,南京210044

出　　处：《高压电器》2017年第8期140-146,共7页High Voltage Apparatus

摘　　要：为了进一步研究电涌保护器(surge protective device,SPD)级间能量配合失效的问题,依据IEC 61643的规定,利用波的传输理论与基尔霍夫定律进行理论分析后,再进行冲击试验,试验发现:SPD在能量配合失效时,其级间的退耦元件受到的损伤往往比主要防雷元件更为严重。研究表明:在8/20μs冲击电流的多次冲击作用下,退耦元件的电气性能将发生变化。同样绕制情况下,线径越大的电感冲击损伤越小;同一温度下,功率越大的电阻冲击损伤越小,且镀膜型电阻的电气性能较绕线型电阻更稳定。从而提出:在SPD的能量配合试验中,应先校验级间退耦元件电气性能的一致性,后分析冲击数据。这在SPD的级间参数配置研究过程中。In order to reasearch the problem of the energy cooperation failure in multi-level surge protective device（SPD）,based on transmission line theory ＆ Kirchhoff law ＆ the request of IEC 61643, then through impulse test,it would find that the damage component when SPD fails in energy may be changed with repeated 8/20 to decoupling component is more severe than main lighting protection cooperation.Results show that decoupling component＇s electrical specification Ixs impulse current.In the same winding case,the greater wire diameter,the stronger stability of the inductance. In the same temperature,the stronger resistance has better stability.And coat- ing resistance is more reliable than winding resistance.h comes to the conclusions that decoupling component should be verified first,then analyzing the impulse data of SPD.The conclusions will be meaningful to the parameter setting of SPDs.

关 键 词：电涌保护器 级间配合 退耦元件 冲击 损伤 

分 类 号：TM862[电气工程—高电压与绝缘技术]