一种用于大容量试验室的电流测量方法  

A current measurement scheme for high power laboratory

作　　者：汪海波 洪深 张玲 WANG Haibo;HONG Shen;ZHANG Ling(State Grid Electric Power Research Institute Co.,Ltd.,Nanjing 211000,China;State Grid Power Testing and Certification Technology Co.,Ltd.,Changzhou 213000,China)

机构地区：[1]国网电力科学研究院有限公司,江苏南京210000 [2]国网电科院检测认证技术有限公司,江苏常州213000

出　　处：《电气应用》2021年第7期80-85,共6页Electrotechnical Application

摘　　要：大容量试验室主要对开关类、变压器类等输变电一次设备进行高压大电流试验,试验电流从几十安培到上百千安培不等,同时要求相关试验参数的测量满足产品对应的标准要求。大容量试验站通常采用分流器、罗氏线圈和互感器等方式进行电流测量。分流器与罗氏线圈的电流测量范围大,互感器电流测量范围相对较小,覆盖几十安培几千安培。提出一种适用于大容量试验站的电流测量方案并进行试验验证,仅通过通道转换实现宽范围的电流直接测量、三角形联结变压器突发短路的相电流测量,可满足不同产品试验电流测量的需求,节约成本的同时省去临时接电流测量装置的工作,避免测量设备临时接线存在的可靠性、安全性等问题,有效提高试验效率。The high power laboratory mainly tests circuit breakers and transformers,the test current ranges from tens of A~hundreds of k A,the measurement of relevant test parameters should meet the corresponding standard requirements of the product.Shunt,rogowski coil and current transformer are usually used for current measurement in high power laboratory.The current measurement range of shunt and rogowski coil is large,while the current measurement range of current transformer is relatively small,covering dozens of A~several k A.A current measurement scheme suitable for high power laboratory is proposed,which can meet the requirements of current measurement for different products test.It is unnecessary to connect the current measuring device temporarily,avoiding the problems of reliability and safety,effectively improving the high power laboratory test efficiency.

关 键 词：大容量试验室 电流测量 变压器突发短路试验 分流器 电流互感器 

分 类 号：TM933.1[电气工程—电力电子与电力传动]