基于高精度源表一体的非车载直流充电机检定装置研制  

Development of off-board DC charger verification devices based on high-precision source-table integration

作　　者：刘思 李熊 张一凡 刘高 冯路 Liu Si;Li Xiong;Zhang Yifan;Liu Gao;Feng Lu(Marketing Service Center,State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310000,China;Tunkia Co.,Ltd.,Changsha 410100,China)

机构地区：[1]国网浙江省电力有限公司营销服务中心,杭州310000 [2]长沙天恒测控技术有限公司,长沙410100

出　　处：《电测与仪表》2021年第9期194-200,共7页Electrical Measurement & Instrumentation

基　　金：国网浙江省电力有限公司科技项目(5211YF20000T)。

摘　　要：针对当前非车载充电机电能计量装置相关的技术研究较少的现状,介绍了一种适应于虚负荷检定的非车载充电机检定装置。该装置功能完备,结构上采用一体式设计,电路上由MCU搭载安卓软件作为中控,驱动电压和电流隔离输出。其中电压源部分采用数模转换器与高精度分压电阻网络反馈模块组合方案,电流源部分采用数模转换器与低端采样反馈模块组合方案。通过现场对非车载直流充电机进行虚负荷检定,通过比对充电机现场测试仪和本装置的实验结果,验证了该检定装置的准确性和可行性。For the current situation that there are few technical researches on energy metering device for off-board charger,this paper introduces an off-board charger verification device which is suitable for virtual load verification.The device has maturity function,adopts an integrated design in structure,and the circuit is equipped with Android carrier by MCU as the central control,driving voltage and current isolation output.Among them,the voltage source part adopts the combination scheme of digital-to-analog converter and high-precision resistor network reverse tube module,the current source part adopts the combination scheme of digital-to-analog converter and low-end sampling and feedback module.Through on-site virtual load verification of off-board DC charger,the accuracy and feasibility of the verification device are verified by comparing the experimental results of the on-site tester of the charger and the device.

关 键 词：直流充电机检定装置 虚负荷检定方案 高精度大电压源 高精度大电流源 电能计量误差 

分 类 号：TM933[电气工程—电力电子与电力传动]