3C3C Model of Distribution Internet of Things Based on MQTT

Due to the diversity of distribution network equipment, complex data, limited resources and harsh environment, it is difficult to build a comprehensive perception of high-quality distribution Internet of things. A 3C3C model based on Message Queue Telemetry Transmission (MQTT) protocol is proposed in this paper. The first 3C refers to 3 Circles: sensing circle, transmission circle and application circle. The second 3C refers to three Components: broker, service and bridge. Then, the general model is applied to the distribution network, and the 3C3C domain model of the distribution Internet of things is proposed, and the scheme of applying the model to intelligent substation, electric vehicle charging station and photo voltaic power station is given. Finally, four main functions of charging station application are designed in detail, which reflects the simplicity and practicability of 3C3C model, and demonstrates the guiding role of the model in the construction of "full perception, easy expansion and high elasticity" power distribution IOT.