Comparative Study on Domestic and International Standards of DC Energy Meter

With the proposition of the decarbonization strategy of energy systems and the development of DC power grid, DC energy measurement technology has become a hot topic both at home and abroad. The International Electrotechnical Commission (IEC) has compiled two technical standards for DC energy meters in 2020 and 2021, which were IEC 62052-11:2020 “Electricity metering equipment- General requirements, tests and test conditions- Part 11: Metering equipment” and IEC 62053–41: 2021 “Electricity metering equipment- Particular requirements-Part 41: Static meters for DC energy (class 0,5 and 1)”. In order to promote the development of related work in China, this paper has compared the latest released IEC standards for DC energy meters with the current national standards and type evaluation outlines in China. It also has analyzed such main differences as the applicable range, accuracy requirement and influence test items, etc. In addition, according to the current application situation of domestic DC technology, it has put forward some suggestions for the standardization of domestic DC energy meters.