电力系统自动化2017，Vol.41Issue(19)：152-158,7.DOI:10.7500/AEPS20170227005
变电站合并单元测试设备校验系统及其实现
Calibration System for Substation Merging Unit Test Equipment and Its Implementation
摘要
Abstract
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 precircuit 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.关键词
智能变电站/合并单元测试设备/延时特性/准确度/校验系统Key words
smart substation/merging unit test equipment/delay characteristics/precision/calibration system引用本文复制引用
欧阳帆,朱维钧,陈宏,肖俊先,徐浩,李辉..变电站合并单元测试设备校验系统及其实现[J].电力系统自动化,2017,41(19):152-158,7.基金项目
本文研究得到国网湖南省电力公司科技项目(5216A5140026)的资助,谨此致谢! （5216A5140026）
