500kV串补火花间隙设计与试验验证  

Design and Experimental Verification of 500 kV Series-Capacitor Spark Gap

作　　者：孙健[1] 阳少军[2] 周启文[1] 王德昌[1] 杨帆[1] 方太勋[1] 

机构地区：[1]南京南瑞继保电气有限公司,南京211102 [2]中国南方电网超高压输电公司,广州510620

出　　处：《南方电网技术》2014年第1期33-37,共5页Southern Power System Technology

摘　　要：介绍了500 kV串补系统中广泛应用的火花间隙系统结构及导通原理,通过分析串补火花间隙的使用工况,提出对火花间隙的功能、性能要求,基于这些要求设计了500 kV串补火花间隙中密封间隙和起弧间隙的自放电电压范围、放电电压配合方案。借助高压试验手段,研究了500 kV串补火花间隙中密封间隙、起弧间隙的自放电电压分布,进而对火花间隙进行强制触发试验,试验结果表明本文设计的间隙调节方案可以确保火花间隙动作电压的稳定性、触发性能的可靠性和导通快速性。The configuration and breakover principle of the spark gap system which is widely used in 500 kV series compensation system are presented. The function and performance requirements of spark gap are proposed though the analysis of spark gap operation condition. Spark over voltage range and voltage cooperated method of trigatron and partial spark gap are designed based on these spark gap＇ s function and performance requirements. Then these studies are validated by high voltage test, and we also found the regulating principle is effective to bring about stability of spark over voltage, reliability of trigger performance and rapidity of breakover.

关 键 词：密封间隙 起弧间隙 强制触发 调节方案 高压试验 

分 类 号：TM862[电气工程—高电压与绝缘技术]