Traceability Technology of DC Electric Energy Metering for On-Site Inspection of Chargers  

作　　者：Hua Li Dezhi Xiong Zhi Wang 

机构地区：[1]Hunan Institute of Metrology and Inspection,Changsha,410018,China [2]State Grid Hunan Electric Power Corporation Limited,Changsha,410001,China [3]Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology,Changsha,410001,China

出　　处：《Energy Engineering》2023年第3期715-727,共13页能源工程（英文）

摘　　要：The on-site inspection of high-power DC chargers results in new DC high-current measurement and DC energy traceability system requirements.This paper studies the traceability technology of electric energy value for automotive high-power DC chargers,including:(1)the traceability method of the built-in DC energy meter and shunt of the charger;(2)precision DC high current and small precision DC voltage output and measurement technology.This paper designs a 0.1 mA∼600 A DC high current measurement system and proposes a 0.005 level DC powermeasurement traceability system.The uncertainty evaluation experiment of theDC powermeasurement calibration system and the high-power DC charger’s on-site calibration experiment results verify the method’s effectiveness and feasibility in this paper.The experimental results show that the combined standard uncertainty of the DC power metering verification system can be 0.0451%.

关 键 词：DC electric energy measurement CHARGER TRACEABILITY CALIBRATION 

分 类 号：TM721.1[电气工程—电力系统及自动化]