数字化电能表动态误差特性测试装置的设计

针对目前智能变电站用数字化电能表缺乏动态误差实验室测试手段的问题,文中采用OOK动态误差测试信号模型,研发了数字化电能表动态误差测试装置。首先引入了OOK离散化动态信号测试模型,其次,提出了装置总体硬件设计方案,并基于该方案提出了OOK数字化动态测试信号生成、IEC 61850-9协议SMV组包方法。最后的试验给出了装置生成的信号波形,满足OOK模型的要求,并对国内某厂家数字化电能表进行试验,验证了该装置用于测试数字化电能表动态误差的有效性。

Design of dynamic error characteristic testing device of digital electric energy meter

As the lack of laboratory testing methods for dynamic load metering error of digital electric energy meter used in smart substation, a kind of dynamic error test equipment of digital electric energy meter, which adopts OOK dynamic test signal model, is developed in this paper.Firstly, a discrete OOK dynamic test signal model is intro-duced;secondly, the overall hardware design scheme of equipment is put forward, based on the scheme, this paper proposed the method of OOK signal generation, and IEC 61850-9 protocol SMV group packing.The final test shows the signal waveform generated by the device can exactly meet the requirements of the OOK model, and the test is con-ducted in some domestic digital electric energy meter company, and the result shows that the equipment can effectively test the dynamic error of digital electric energy meter.