有串联间隙金属氧化物避雷器工频放电电压的现场测量  

Field-measuring the Power-frequency Discharge Voltage of MOA with Series Gap

作　　者：付海涛[1] 蔡立新[1] 彭兵[2] 

机构地区：[1]中国长江电力股份有限公司检修厂,湖北宜昌443002 [2]中国长江电力股份有限公司生产计划部,湖北宜昌443002

出　　处：《电瓷避雷器》2009年第4期44-46,共3页Insulators and Surge Arresters

摘　　要：工频放电电压是反映电气设备质量的重要参数之一。采用阀式避雷器试验的常规方法测量有串联间隙氧化锌避雷器的工频放电电压,将导致测量结果偏高。从工频放电试验机理入手,结合设备结构,探索出一种简便有效的测量方法。通过观察操作箱上电流数字的变化,可以有效判别间隙放电时刻,准确地测量到工频放电电压。该测量方法对三相组合式过电压保护器同样有效。Power-frequency sparkover voltage is a key parameter to reflect quality of electrical equipment. Measuring power-frequency sparkover voltage of gapped MOA using conventional method for Valve-type lightning arrester test can lead to enhenced results After analyzing the mechanism of power-frequency sparkover and the equipment structure, a simple and effective measurement method was found.. Through observing the change of current digits on the operating cabin, gap sparkover moment can be effectively observed and, the voltage value can be measured accurately. This measuring method also effective to the TBP .

关 键 词：串联间隙 金属氧化物避雷器 三相组合式过电压保护器 工频放电电压测量 

分 类 号：TM862[电气工程—高电压与绝缘技术]