Integrating the Power Distribution Terminals into the Power Distribution Internet of Things

The power distribution network is transforming to power distribution IoT (Internet of Things), which enables the overall perception of state, efficient handling of information, and convenient and feasible application of distribution network. The distribution terminals are the fundamental components and core devices of distribution network. In order to integrate the power distribution terminals into the power distribution internet of things, this paper specifies their information model, procedure of access to cloud main station, and structure of message sent to and received from cloud main station. The information model is based on IEC 61850, the access is made using UPnP (Universal Plug and Play) protocol, and the communication uses MQTT (Message Queuing Telemetry Transport) protocol. These technical specifications have been verified by a power distribution IoT demonstration project in Nanjing. Therefore, these specifications act as a guide or reference for building other power distribution IoT.