Calibration System for Substation Merging Unit Test Equipment and Its Implementation

被引：0
|
作者：
Ouyang F. [1 ]
Zhu W. [1 ]
Chen H. [1 ]
Xiao J. [2 ]
Xu H. [1 ]
Li H. [1 ]
机构：
[1] Electric Power Research Institute of State Grid Hunan Electric Power Company, Changsha
[2] Hunan Xiangdian Test Research Institute Co. Ltd., Changsha
来源：
Ouyang, Fan (qqwjwww@163.com) | 1600年 / Automation of Electric Power Systems Press卷 / 41期
关键词：
Calibration system; Delay characteristics; Merging unit test equipment; Precision; Smart substation;
D O I：
10.7500/AEPS20170227005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to solve the problems of lack of effective calibration means for the two key test performance indices “delay characteristics” and “precision” in the technical performance of substation merging unit (MU) test equipment, a calibration method for the technical performance of substation MU test equipment is proposed. The corresponding calibration system is developed, and the composition of the calibration system and its technical indices are described. Based on the hardware system of “high performance ARM processor+FPGA+high precision AD chips”, the high-speed voltage and current sampling pre-circuit is designed to reduce the sampling delay error. And the fixed frequency sampling high-precision amplitude and phase measuring algorithm is adopted for high-precision sampling value measurement. A precise and flexible test strategy for time delay is adopted. Finally, the comparison test of the MU testing equipment using the calibration system has been carried out. The practical problem that the core performance of substation MU test equipment cannot be tested is basically solved. © 2017 Automation of Electric Power Systems Press.
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收藏
页码：152 / 158
页数：6
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