串联补偿电容装置火花间隙自触发原因分析  

Reason Analysis of the Spark Gap Self-trigger of Series Compensation Capacitor Device

作　　者：张杰[1,2] 黄康驾[3] 

机构地区：[1]中国南方电网超高压输电公司百色局,广西百色533000 [2]广西大学电气工程学院,南宁530004 [3]中国南方电网超高压输电公司南宁局,南宁530028

出　　处：《广西电力》2014年第5期43-47,共5页Guangxi Electric Power

摘　　要：分析查找"4·10"多个串联补偿电容装置火花间隙自触发原因。通过对XLSK-20PL强制触发型火花间隙装置进行触发间隙自放电电压测试、均压电容参数测试和火花间隙击穿特性测试,发现石墨电极表面存在鸟粪等污物是火花间隙自触发的根本原因。火花间隙击穿特性测试结果显示,当石墨电极表面有尖端、水珠或污秽物等时,火花间隙的主间隙击穿电压分散性很大,交流击穿电压最低约为正常值的65.0%。提出了加强火花间隙运行维护等改进措施。Reasons of ＂4＂ 10＂ spark gap self-trigger of multi series compensation capacitor equipments is analyzed and found. By testing the self-trigger voltage of trigger gap, parameters of equalization capacitor and breakdown characteristics of spark gap of the XLSK-20PL forced trigger type spark gap, it is found that pollutions such as bird droppings on the surface of graphite electrode are root reasons of the spark gap self-trigger. Test results of breakdown characteristics of spark gap show that the breakdown voltages of the main gap of the spark gap have great dispersion if the surface of the graphite electrode has burr, water or pollutions, and the lowest AC breakdown voltage is about 65% of normal value. Modification measures such as the enforcement of operation maintenance of the spark gap and so on are proposed.

关 键 词：串联补偿电容装置 火花间隙 自触发 击穿特性试验 

分 类 号：TM83[电气工程—高电压与绝缘技术]