作者：曹敏¹, 李波¹, 毕志周¹, 李毅¹, 肖元强²

作者单位：1. 云南电力试验研究院(集团)有限公司电力研究院南方电网电能计量重点实验室, 云南 昆明 650217;
2. 昆明理工大学云南电网公司研究生工作站, 云南 昆明 650217

关键词：电学参量;校准仪;多功能;自由组合;双通道比较仪

摘要：

当前各种电学参量校准装置通常为一体化设计,只能对单一参量校准。设计一种高精度组合式的多功能校准仪,将电压比例标准(U/U)、电流比例标准(I/U)以及双通道电压比较器进行独立设计、校准和应用。使用多功能校准仪对U/U各输出档校准,最大误差为3.310-6;对多功能校准仪进行不确定度分析,最大不确定度为3.810-6。测试结果表明:增加校准仪的应用功能和范围,可以提高校准仪的测量不确定度和校准精度。

Design of high precision modular multifunction calibrator

CAO Min¹, LI Bo¹, BI Zhizhou¹, LI Yi¹, XIAO Yuanqiang²

1. Key Laboratory of Yunnan Electric Power Research Institute (Group) Co., Ltd., Electric Power Research Institute of China Southern Power Grid Energy Metering, Kunming 650217, China;
2. Graduate Workstation of Kunming University of Science and Technology and Yunnan Power Grid Corporation, Kunming 650217, China

Abstract: Various calibration devices for electrical parameters usually are designed integrated, and a calibration device can only calibrate a single parameter. This paper introduced a high precision modular multifunction calibrator. The multifunction calibrator was divided into three parts which included a voltage ratio of the standard (U/U), a current ratio of the standard (I/U) and a dual-channel voltage comparator. They were respectively independent in design, calibration and application. Each output of U/U was calibrated by modular multifunction calibrator, and the maximum error was 3.3×10^-6. Uncertainty analysis of modular multifunction calibrator was done, and the largest uncertainty was 3.8×10^-6. Test results show that the function and scope of application of calibrator are extended and the uncertainty and calibration accuracy is improved.

Keywords: electric parameter;calibrator;multifunction;free combination;dual channel comparator

2016, 42(2): 36-40  收稿日期: 2015-3-2;收到修改稿日期: 2015-4-9

基金项目: 

作者简介: 曹 敏(1961-),男,教授级高级工程师,主要从事输变电智能化、智能电网与物联网、电力质量及测量工作。

参考文献

[1] 范巧成,黄奇峰,祝福,等. 计量基础知识[M]. 北京:中国计量出版社,2009(3):5-6.
[2] 王新金,毛晓波,陈铁军. 高精度标准电能表设计方法[J]. 电测与仪表,2009,9(46):49-52.
[3] 蔡黎彬,王卫东. 一种新型高速电流比较器的研究与设计[J].电子科技,2010,23(4):36-37.
[4] 李莉,才恽. 连续可调的高分辨率直流电压标准设计[J]. 计量与测试技术,2007,35(3):28-31.
[5] 何小兵. 工频600 V标准感应分压器[J]. 现代计量测试,1996(6):38-42.
[6] 赵祥林,贺艳平,骆雪,等. 通过有源阻抗的矢量电压合成来消除互感器测量误差的方法:200810218417[P]. 2008-10-17.
[7] GUO W, ZHANG H C, YU Z H, et al. A calibration system for electrical transformers with analog output[J]. Power System Protection and Control,2012(6):49-51.
[8] 林国营,周尚礼. 电子式互感器校验系统的误差分析方法[J].电测与仪表,2010(6):35-37.
[9] YU C Y, YE G X. Calibration technique of electronic instrument transducers[J]. High Voltage Engineering,2004, 30(4):20-22.
[10] 唐宗魁. 噪声系数的测量方法[J]. 科技信息,2008(19):354-355.