{"title":"Traceability Technology of DC Electric Energy Metering for On-Site Inspection of Chargers","authors":"Hua-Dong Li, D. Xiong, Zhi Wang","doi":"10.32604/ee.2022.022990","DOIUrl":null,"url":null,"abstract":"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 power measurement traceability system. The uncertainty evaluation experiment of the DC power measurement 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%.","PeriodicalId":35610,"journal":{"name":"Energy Engineering: Journal of the Association of Energy Engineers","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Engineering: Journal of the Association of Energy Engineers","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.32604/ee.2022.022990","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
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 power measurement traceability system. The uncertainty evaluation experiment of the DC power measurement 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%.
大功率直流充电器的现场检测产生了新的直流大电流测量和直流能量溯源系统要求。本文对车载大功率直流充电器的电能值溯源技术进行了研究，包括:(1)充电器内置直流电能表和分流器溯源方法;(2)高精度直流大电流和小精度直流电压输出和测量技术。本文设计了0.1 mA ~ 600 a直流大电流测量系统，并提出了0.005级直流功率测量溯源系统。直流功率测量校准系统的不确定度评定实验和大功率直流充电器的现场校准实验结果验证了本文方法的有效性和可行性。实验结果表明，直流计量检定系统的联合标准不确定度可达0.0451%。
期刊介绍：
Energy Engineering is a bi-monthly publication of the Association of Energy Engineers, Atlanta, GA. The journal invites original manuscripts involving engineering or analytical approaches to energy management.
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