适用于配电物联网的低压智能终端自适应接入方法

Adaptive Access Method of Low Voltage Intelligent Terminal for Distribution Internet of Things

配电物联网是泛在电力物联网的重要组成部分,打造配电物联网生态系统是提高配电网运行效率、优化企业经营绩效、实现发展成果共享的一项重要举措。针对未来配电物联网面临海量低压智能终端的接入导致安装调试运维工作量增加的问题,文中首先提出借鉴物联网模型、IEC61850以及IEC 61968等标准,建立一套适用于配电物联网的模型体系,并应用以消息队列遥测传输(MQTT)协议和受限应用协议(CoAP)为代表的物联网通信协议,促使设备之间的通信标准化,实现终端数据模型高效传输。接着,从低压智能终端首次接入、功能升级以及因故退出等3个方面论述了自适应接入实现流程。最后,通过实验测试并结合工程应用,验证了文中所提方法的有效性。

Distribution Internet of Things(D-IoT) is an important part of ubiquitous power Internet of Things. It is an important measure to improve the efficiency of distribution network operation, optimize the business performance and share development results by creating D-IoT ecosystem. In the future,the D-IoT will face the increasing workload of installation, commissioning,operation and maintenance due to the access of massive low-voltage intelligent terminals. This paper proposes a model system for D-IoT based on the Internet of Things model, IEC 61850 and IEC 61968 standards. Also, the communication protocols of the Internet of Things represented by message queuing telemetry transport(MQTT)protocol and constrained application protocol(CoAP)are applied to standardize the communication between devices and realize efficient transmission of terminal data model.Then, the adaptive access process is discussed from three aspects:the first access of the low-voltage intelligent terminals, the function upgrading and the reason for the withdrawal. Finally, the effectiveness of the proposed method is verified by the experiments and engineering applications.