智能电能表提升EMC能力的设计策略

Design strategies for smart electric energy meters to improve EMC capability

针对提升智能电能表的电磁兼容抗干扰能力问题,在分析智能电能表结构和电磁兼容传播方式的基础上,详细研究了智能电能表受到的七种电磁兼容干扰的情况,从干扰源头、干扰路径和敏感元件三个方面着手,以抑制干扰源头、切断传播路径和保护敏感元件的策略思路,结合电能表的结构特征和运行原理,提出智能电能表提升电磁兼容抗干扰能力的设计策略,从电源端口和信号接口、芯片集群、通信模块和软件程序四个方面进行优化设计以提升智能电能表的抗电磁兼容干扰性能,为智能电能表的设计开发提供技术参考。

In this paper,aiming at the problem of improving the EMC anti-interference ability of smart energy meters,on the basis of analyzing the structure of smart energy meters and the propagation mode of electromagnetic compatibility,the seven kinds of electromagnetic compatibility interferences suffered by smart energy meters are studied in detail.Starting from three aspects of interference source,interference path and sensitive components,based on the strategy ideas of suppressing the source of interference,cutting off the propagation path and protecting sensitive components,combined with the structural characteristics and operating principles of the electric energy meter,a design strategy for improving the EMC anti-interference ability of the smart electric energy meter is proposed.The strategy is optimized from four aspects of power port and signal interface,chip cluster,communication module and software program to improve the anti-electromagnetic compatibility interference performance of smart electric energy meters,and provide technical reference for the design and development of smart electric energy meters.