随着国家智能电网的建设,变电站中各种传感器日益增多,且变电站占地面积大,如何实现变电站设备的统一管理、监控和维护,成为越来越迫切的需求.无线Mesh网络具有自组网和自愈合能力,能够单独控制各节点,满足上述需求.以ESP32芯片为硬件节点模块,利用其自带的WIFI模块配置Mesh网络并进行组网,实现了传感器与ESP32的连接和通信、Mesh网络下层级之间的数据透传以及上层级之间的数据解析和数据库保存操作,建立了完整的Mesh网络框架.经测试,该系统结构简单清晰、部署快捷、便于维护,基本满足在变电站环境下的物联网实现.

With the construction of the national smart grid, there are more and more sensors in substations, and due to the large area of substations, how to unify the management, monitoring, and maintenance of substation devices has become an urgent need. Wireless mesh network has the ability of self-organization of network and self-healing, and can independently control each node to meet the above requirements. In this paper, ESP32 was used as the hardware node module, and its own WIFI module was used to configure and network the Mesh network. The connection and communication between the sensors and ESP32, the data transfer from lower computer, and the data analysis and database saving operations from upper computer were realized. In addition, a complete Mesh network framework was established. The test results show that the system has a simple and clear structure, quick deployment, easy maintenance, which basically meets the implementation of the Internet of things (IoT) in a substation environment.