工频电流比例标准辅助标准校准线路分析及不确定度评定  

Auxiliary Standard Circuit and Uncertainty Evaluation for Current Ratio Standards at Power Frequency

作　　者：刘罡 曹兵 李风泽 姜春阳[2] 房琛 LIU Gang;CAO Bing;LI Fengze;JIANG Chunyang;FANG Chen(Electric Power Research Institute of State Grid Liaoning Electric Power Co.,Ltd.,Shenyang 110006,China;China Electric Power Research Institute,Wuhan 430074,China;Dalian Electric Power Construction Engineering Co.,Ltd.,Dalian 116021,China)

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]中国电力科学研究院,湖北武汉430074 [3]大连电力建筑工程公司,辽宁大连116021

出　　处：《山东电力技术》2019年第6期51-54,共4页Shandong Electric Power

基　　金：国家电网有限公司总部科技项目“智能配电网一次融合传感器及其校验技术研究”(JL71-18-018)

摘　　要：工频电流比例标准二次1A小电流或一次10000A大电流的校准需借助辅助标准完成,为使其自身的量值复现,对辅助标准各变比分别采用自校线路、比较线路和除法线路进行分析,得到单次测量试验数据,评定出合成标准不确定度,计算出扩展不确定度,最终给出各变比最佳估计值的判断。The accurate calibration of current ratio standards at fundamental frequency requires auxiliary unit when the secondary current is 1 A or the primary current is 10 000 A.In order to get the recurrence its own quantity value,are analyzed each variable ratio of the auxiliary standards using self-calibration circuit,comparison circuit and division circuit.Synthetic standard uncertainty is assessed,and the extended uncertainty is calculated.Finally the best estimated value of each variable ratio is obtained.

关 键 词：工频电流比例标准 辅助标准 电流比较仪 最佳估计值 

分 类 号：TM93[电气工程—电力电子与电力传动]