智能变电站电能计量装置现场校验技术研究

Research on Field Calibration Technology of Electric Energy Metering Device in Smart Substation

针对目前智能变电站电能计量装置的运行方式,就现有的技术情况介绍了电子式互感器、合并单元以及数字式电能表的现场校验方法。结合实际现场校验经验,对不同校验方法对电子式互感器误差测量的影响.以及电子式互感器误差不稳定和电子式电流互感器极性问题进行了分析,同时就数字式电能表实负荷检定存在的问题进行阐述,并对存在的问题提出了一系列解决方法。

According to the current operation mode of electric energy metering device in intelligent substation,the on-site calibration methods of electronic transformer,merging unit and digital electric energy meter are introduced based on the existing technical situation.Combined with the actual field calibration experience,this paper analyzes the influence of different calibration methods on the error measurement of electronic transformer,as well as the instability of electronic transformer error and the polarity problem of electronic current transformer.At the same time,it expounds the problems existing in the real load verification of digital watt-hour meter,and puts forward some solutions to the existing problems.