满足国家电网公司标准体系的LoRa用能采集专网技术研究及应用

Research and application of dedicated LoRa electrical energy acquisition network under state grid standard system

文章先分析了现有采集技术在地下车库充电桩、煤改电等复杂、多变、新型、弱规划应用场景下采集难的原因。之后对比分析了LoRa技术优势,提出了基于国家电网公司用电信息采集标准体系的LoRa用能采集专网架构。建立了基于"多叉树"模型的LoRa网络,将节点接收信噪比纳入通信质量考核指标,提出了最大可靠路径组网策略和最优路径组网策略。在小区地下车库建设LoRa专网,经测试,地下车库范围内的LoRa网络覆盖率达到100%,优良质量信号覆盖率达100%,一周连续抄表成功率为100%。

Firstly,this paper analyzes the reasons why the current electrical energy acquisition technology is not very suitable in the complex,variable,new type,and other weak signal application environments such as underground garage and coal-to-electricity conversion.After that,the advantages of LoRa technology are compared and analyzed,and the dedicated LoRa electrical energy acquisition network architecture based on the state grid electricity information acquisition standard system is proposed.Then,a LoRa network based on multi-forked tree model is established.When assessing the communication quality,this paper takes the slave node receiving signal-to-noise ratio into consideration and proposes the max reliable route network(MRRN)and best route network(BRN).To verify the reliability of the dedicated LoRa network,it was built in an underground garage.The result shows that the coverage of LoRa signal reaches 100%,the area with good LoRa signal quality reaches 100%,and the success rate of continuous meter reading in a week reaches 100%.