基于LoRa技术的智能电能表研究  

Research on smart electricity meter based on LoRa technology

作　　者：许涛 张闯 刘洋[3] 杨扬 陈月 刘鑫宇 Xu Tao;Zhang Chuang;Liu Yang;Yang Yang;Chen Yue;Liu Xinyu(XJ Electric Co.,Ltd.,Xuchang 461000,Henan,China;Heilongjiang Electric Instrument Engineering Technology Research Center Co.,Ltd.,Harbin 150028,China;XJ Group Corporation,Xuchang 461000,Henan,China)

机构地区：[1]许继电气股份有限公司,河南许昌461000 [2]黑龙江省电工仪器仪表工程技术研究中心有限公司,哈尔滨150028 [3]许继集团有限公司,河南许昌461000

出　　处：《电测与仪表》2023年第8期194-200,共7页Electrical Measurement & Instrumentation

基　　金：国网河北省电力有限公司科技项目(5204XQ20008T)。

摘　　要：针对目前的智能电能表的无线通信方式无法同时兼顾低功耗和远距离的问题,文中研究了基于LoRa技术的智能电能表,对电能表整体架构及各模块进行详细设计,以FM3308芯片为控制核心,以高精确度的采样电路对被计量线路的电压和电流进行采样,采用高速、多功能电能计量专用集成电路,对电压和电流采样信号进行计量,通过LoRa技术实现低功耗、远距离的通信,使用ESAM加密芯片实现加密安全,并且从硬件和软件两方面进行了抗干扰设计。文章设计实现的LoRa智能电能表同时实现了远距离传输和低功耗特性,优秀的抗干扰能力有利于实现远距离的集中抄表行为,可以大大降低中继器的布置,在降低设计要求的同时减少了成本投入,有助于推动智能电网的建设。In view of the problem that the current wireless communication methods of smart electricity meter cannot give consideration to low power consumption and long-distance at the same time,this paper studies the smart electricity meter based on LoRa technology,and designs the overall structure of the electricity meter and each module in detail,takes FM3308 chip as the control core,the voltage and current of the metered circuit are sampled with a high-precision sampling circuit,and a high-speed and multi-function electrical energy measurement application specific integrated circuit is used to measure the voltage and current sampling signals,which realizes low-power consumption and long-distance communication through LoRa technology,the ESAM encryption chip is used to achieve encryption security,and the anti-interference design is carried out from both hardware and software aspects.This research realizes the coexistence of long-distance transmission and low-power consumption of communication in smart electricity meter,maintains the good anti-interference ability of smart electricity meter at the same time,it is conducive to the realization of long-distance centralized meter reading behavior,and can greatly reduce the layout of repeaters,reduce the design requirements and the cost investment,which is helpful to promote the construction of smart grid.

关 键 词：LoRa 智能电能表 远距离通信 低功耗 抗干扰 

分 类 号：TM933[电气工程—电力电子与电力传动]