新型变压比电桥检定仪校准方法研究及不确定度评定  

Research on the Calibration Method and Uncertainty Evaluation of a New Type of Transformer Ratio Bridge

作　　者：王永兴[1] 刘罡 姜春阳[3] WANG Yongxing;LIU Gang;JIANG Chunyang(Dalian University of Technology,Dalian 116024,China;Electric Power Research Institute of State Grid Liaoning Electric Power Co.,Ltd.,Shenyang 110006,China;China Electric Power Research Institute,Wuhan 430074,China)

机构地区：[1]大连理工大学,辽宁大连116024 [2]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [3]中国电力科学研究院,湖北武汉430074

出　　处：《山东电力技术》2021年第1期6-9,共4页Shandong Electric Power

基　　金：国家重点研发计划项目(2017YFF02057010);国家电网有限公司科技项目“智能配电网一二次融合传感器及其校验技术研究”(JL71-18-018)。

摘　　要：为避免变压比电桥因长途运输送检出现设备失准等问题,依据感应分压器测量原理研制一套变压比电桥检定仪。从变比示值和标准偏差2个方面给出了变压比电桥的误差结果。从测量重复性、上级标准器和被检电桥修约化整3个方面对变压器电桥进行了不确定度评定,计算了合成标准不确定度和扩展不确定度。采用传递比较法给出不确定度验证,证明校准结果符合要求。In order to avoid the problem of equipment misalgnment due to long distance transportation,a set of bridge calibrator with variable voltage ratio is developed based on the measuring principle of the inductive voltage divider The error results of the variable-ratio bridge are given from two aspects:the variable-ratio indication and the standard deviation.The uncertainty of transformer bridge is evaluated from three aspects:measurement repeatability,superior standard,revision and rectification of inspected bridge.The uncertainty of composite standard and extended uncertainty are calculated.The uncertainty verification is given by the transfer comparison method,which proves that the calibration results meet the requirements.

关 键 词：变压比电桥 量值溯源 不确定度评定 传递比较法 

分 类 号：TM93[电气工程—电力电子与电力传动]