基于自补偿技术的模数混合标准电能表设计
2021年电子技术应用第7期
王一民1,吴振宇1,朱重冶2
1.宁波市计量测试研究院,浙江 宁波315048;2.宁波三维电测设备有限公司,浙江 宁波315032
摘要: 目前数字化电能表溯源方面存在很多问题,针对这一情况,描述了一款模拟数字混合标准电能表的设计方法,使数字化电能表溯源统一到传统的模拟溯源体系中。介绍了功率角自补偿的方法,提升功率角的测量精度;通过一系列技术措施,克服了61850-9-2数字报文采样率偏低的困难,使得该标准表准确度等级达到了0.01级,对于开展电力公司常用的0.05级数字电能表校验仪检定工作有重要的意义。
中图分类号: TN06; TM933
文献标识码: A
DOI:10.16157/j.issn.0258-7998.200452
中文引用格式: 王一民,吴振宇,朱重冶. 基于自补偿技术的模数混合标准电能表设计[J].电子技术应用,2021,47(7):88-91,96.
英文引用格式: Wang Yimin,Wu Zhenyu,Zhu Chongye. Design of analog digital standard meter based on self feedback[J]. Application of Electronic Technique,2021,47(7):88-91,96.
文献标识码: A
DOI:10.16157/j.issn.0258-7998.200452
中文引用格式: 王一民,吴振宇,朱重冶. 基于自补偿技术的模数混合标准电能表设计[J].电子技术应用,2021,47(7):88-91,96.
英文引用格式: Wang Yimin,Wu Zhenyu,Zhu Chongye. Design of analog digital standard meter based on self feedback[J]. Application of Electronic Technique,2021,47(7):88-91,96.
Design of analog digital standard meter based on self feedback
Wang Yimin1,Wu Zhenyu1,Zhu Chongye2
1.Ningbo Institute of Metrology and testing,Ningbo 315048,China; 2.Ningbo Sunrise Instruments Co.,Ltd.,Ningbo 315032,China
Abstract: At present, there are many problems in the traceability of digital energy meters. In view of this situation, this article describes a design method of an analog-digital hybrid standard energy meter, which makes the traceability of digital energy meters unified into the traditional analog traceability system. The article introduces the method of power angle self-compensation to improve the measurement accuracy of the power angle; through a series of technical measures, it overcomes the difficulty of the low sampling rate of 61850-9-2 digital message, making the standard table accuracy level reach 0.01,which is of great significance for the verification work of the 0.05 class digital energy meter calibrator commonly used by power companies.
Key words : digital energy meter tracing;integral algorithm;windowing function;power angle self compensation
0 引言
随着智能变电站IEC61850数字化标准的推广及相应技术的发展,数字化电能表应用日益广泛[1-2]。因此,如何确立其检定规范、如何对其检定标准进行溯源等也就成了电力计量人员关心的问题[3-5]。现有对标准数字电能表的检定仅仅是虚负荷情况下的校准,因此无法对数字化电能表实现垂直计量、溯源。由于模拟电能表计量检测体系非常成熟、规范,如果能够利用模拟量计量体系实现数字电能表检测,则可以使数字电能表溯源统一到模拟溯源体系中。
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作者信息:
王一民1,吴振宇1,朱重冶2
(1.宁波市计量测试研究院,浙江 宁波315048;2.宁波三维电测设备有限公司,浙江 宁波315032)
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