基于千安级冲击电流的GIS电接触特性状态评估研究  

Assessment of GIS Electrical Contact State by Means of Kiloampere Grade Impact Current

作　　者：李雷[1] 罗容波[1] 王俊波[1] 苗银银[1] 鲁铁成[2] 张博[2] 

机构地区：[1]广东电网公司佛山供电局,广东佛山528000 [2]武汉大学电气工程学院,武汉430072

出　　处：《高压电器》2015年第9期49-54,共6页High Voltage Apparatus

基　　金：广东电网公司科技项目(K-GD2012-149)~~

摘　　要：为了准确测量并评估GIS导电连接件的电接触状态,针对基于超级电容器产生的千安级冲击电流测量导电连接件回路电阻的测试方法,提出依据回路电阻随测试电流增长的变化率大小来判断GIS触头电接触状态是否良好的评估判据。利用该方法对多种典型标准的GIS导电杆进行多触头串联验证试验以及GIS变电站现场验证试验。试验结果表明,基于千安级冲击电流的GIS电接触状态的评估方法具有可行性和有效性,比传统直流压降法更能反应导电连接件触头的电接触特性。To accurately measure and assess the electrical contact state of GIS conductive connected component, the method for measuring the loop resistance of conductive connected component by means of kiloampere grade impact current generated by super capacitors was employed. It was proposed that the change rate of the loop resistance with increasing current cab be taken as a criterion for the assessment of electrical contact state of GIS. Verification tests were conducted for some typical standard GIS conductive rods and GIS substations. The results show that the assessment method of GIS electrical contact state by means of kiloampere grade impact current is feasible and effective, and it can better reflect the electrical contact properties of conductive connected component compared to conventional DC voltage drop method.

关 键 词：导电连接件 回路电阻 超级电容器 冲击电流 电接触 状态评估 

分 类 号：TM595[电气工程—电器]