三相组合式过电压保护器工频放电试验中间隙击穿放电判断方法的分析  

Analysis on the Methods of Judging the Gap Spark-over at Power Frequency Spark-over Test on the Three Phase Combinative Surge Protector of TBP Series

作　　者：董国震[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电瓷避雷器》2006年第4期34-36,40,共4页Insulators and Surge Arresters

摘　　要：通过对TBP系列三相组合式过电压保护器的工频放电试验,分析了三种判断间隙击穿放电的方法,即电流表A1指示是否有变化;电流表A2指示是否有变化;或电流继电器是否动作及其对放电电压值的影响。电流表A1应选用量程为毫安级电流表或选用数字电流表;电流表A2应选用量程为50 A以下的安培级电流表或选用数字电流表。电流继电器动作不能准确反映TBP放电间隙开始击穿放电的准确时刻,不能作为TBP放电间隙开始击穿放电的依据。Three methods of judging gap Spark-over at power frequency spark-over test on the three phase combinative surge protector of TBP type were analyzed, namely change of indication on ammeter A1, A2 or operation of current relay. For ammeter A1, milliamperemeter or digital ammeter shall be used while for ammeter A2 amperemeter upto 50 A or digital ammeter shall be used. The operation of current relay could not indicate the precise initiated time of gap spark-over and could not be served as indication of gap flashover initiation.

关 键 词：三相组合式过电压保护器 间隙击穿放电 工频放电电压 

分 类 号：TM862[电气工程—高电压与绝缘技术]