数字量输入式电能表在线校验方法及系统的研究

Analysis and Research of Digital Input Type Electric Energy Meter Calibration Device and Online Verification System

通过研制高精度数字标准功率源,搭建基于数字量网络传输的数字量输入式电能表与数字标准功率源在线校验系统,包括对虚负荷校验的方式、虚拟负荷校验方式、实负荷校验方式,分析了数字量输入式电能表的电能优化计算方法.同时通过研究电磁环境对校准精度的影响,实现数字量输入式电能表与数字标准功率源快速、准确、有效的在线校准,大大降低综合成本.

In this paper,a high-precision digital standard power source is developed to build a digital input power meter and digital standard power source online verification system based on digital network transmission,including virtual load verification mode,virtual load verification mode,and real load. The paper uses the verification method to analyze the electric energy optimization calculation method of the digital input type electric energy meter,and realize the fast,accurate and effective online calibration of the digital input type electric energy meter and the digital standard power source by studying the influence of the electromagnetic environment on the calibration precision,and the comprehensive cost is greatly reduced.