电容器在10 kV配电线路雷电防护中的应用研究  

Research on the Application of Capacitor in 10kV Distribution Line Lightning Protection

作　　者：贾国滨 王健一[2] 高寒[1] 李金忠[2] 李卫国[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]中国电力科学研究院,北京100192

出　　处：《电瓷避雷器》2017年第2期69-73,共5页Insulators and Surge Arresters

摘　　要：针对10 kV配电线路耐雷水平低、通常没有安装避雷线及线路避雷器的保护、雷击跳闸率高等现状,提出一种利用在绝缘子两端并联放电间隙与电容器串联支路,通过电容器分流雷电流的原理来对10 kV配电线路雷电过电压进行防护。阐述了利用并联放电间隙与电容器串联支路防雷机理以及利用电磁暂态仿真程序ATPDraw建立仿真模型,计算绝缘子两端在遭受雷击情况下承受的电压以及通过电容分流的雷电流大小;通过理论分析与仿真计算表明,在绝缘子两端并联电容器有良好的防雷效果;同时也指出了并联电容方法的优势与不足。Due to the low lightning withstand level of 10 kV distribution line, and often without the protection of the lightning conductor or line lightning arrester, and high lightning trip-out rate. Depend on this status quo, a method to use capacitor parallel with the insulator to shunt lightning current for protecting 10 kV distribution lines from the lightning over-voltage is proposed. It is expounded that a simulation model is established based on the theory of capacitance shunt lightning current and the electromagnetic transient simulation program ATPDraw, the insulator voltage at both ends and the lightning current through the shunt capacitance in the case of lightning strike; Through theoretical analysis and simulation show that the insulator parallel with appropriate capacitor on both ends has a good lightning protection effect; At the same time capacitance method are also pointed out. the advantages and disadvantages of the shuntcapacitance method are also pointed out.

关 键 词：10 k V配电线路 防雷 并联电容 ATPDRAW 

分 类 号：TM53[电气工程—电器] TM863