Research On Event-triggering And TCP/IP In Microgrid Communication System

With the rapid growth of electricity demand, large internet network systemhas become the major supply channel for centralized power supply and long-distance transmission. However, as the scale expansion, high cost and difficultoperation of the power grid, it is more and more difficult to meet the users’increasing requirements of the safety and reliability. These problems makemicrogrid (MG), which is composed of small capacity distributed renewableenergy sources, become the research focus. In order to build more intelligentnetworked MG communication network system, a series of research andsimulation are simulation are launched in the paper.Firstly, research background and basic structure of the MG are introduced.And the application of three-layer distributed structure of multi-agent system inMG communications system is described. In this MG communications system,the event-triggering mechanism is adopted as its control system and TCP/IPprotocol is used as its communication, in order to introduce the advantages of theInternet’s universality and its wide coverage, and finally achieving real-timecommunication and control of the MG.Secondly, according to the hierarchical and distributed structure of the MGand multi-agent system, and the principle of the event-triggering mechanism andthe application of TCP/IP, the basic circuit simulation and model of MGcommunication system is designed and built in MATLAB/Simulink, and thesimulation result is obtained and analyzed. On the basis of this design, establishother microsource models access to system circuit.Finally, considering congestion problems caused by large amount of data inthe MG communication process, the congestion problems and TCP congestioncontrol algorithm are focused on. In addition, the improvement and optimizationof TCP congestion control algorithm based on event-triggering mechanism isproposed. The congestion control algorithm is programmed and simulated through NS-2network simulation software. Compare and analyze the simulationresults before and after the optimization. It proves that the MG TCP/IPcommunication system based on event-triggering mechanism has better real-timeperformance and reliability. The congestion control algorithm based on event-triggering mechanism can effectively solve the congestion problems generated inthe MG communication process.