Research On PLC Optimization Technology Supporting Power Supply And Demand Interactive Service

As the State Grid Corporation speeds up the pace of building smart grid,smart grid supply and demand interactive business also will be more refined and complicated.Power line communications with its wide coverage,without the need to rewrite and other advantages,has become the priority transmission method of smart grid supply and demand interactive business on demand-side communication technology.However,the low-voltage power line channel environment is poor,and the existing demand-side communication environment and technology have hindered the development of interactive supply and demand services.Therefore,on the basis of studying the existing power line communication technology,this paper verifies the feasibility of power line communication applied to the transmission of interactive service supply and demand and proposes an adaptive coding and modulation optimization algorithm for demand side power line communication.(1)Describe the research background and significance of the application of power line communication technology in the interaction of supply and demand interactive services,and at the same time,summarize the status quos of demand-side power line communication technology both at home and abroad,leading the main research content of this paper-demand side power line communication optimization techniques.Then,the theoretical basis used in this paper is illustrated,such as the classification model of interactive services,power line channel environment and adaptive coding and modulation strategy.(2)Set up the environment of power line communication,and verify the feasibility of the application of power line communication technology in the interaction of supply and demand through the experimental results.In this paper,based on both zero-interference channel and strong-interference channel on demand side of the two major scenarios for experimental analysis.By analyzing the experimental datas and comparing the demand for communication services,it is concluded that the power line communication can be used for the transmission of interactive services between supply and demand.(3)Propose the algorithm designed in this paper to optimize the power line communication technology that supports the supply and demand interactive operation of the power grid.According to the levels of the service to be transmitted in the input hybrid queue and the signal-to-noise ratio(SNR)at this moment,the coding and modulation mode most suitable for the service transmission is adaptively matched,and the feedback mechanism is introduced to improve the reliability of the communication system.First of all,this paper statistically analyzes the existing coding and modulation technology communication performance indicators,and then selects the classical channel models.The design of this paper describes the principle and flow of the optimized transmission algorithm,and finally through the matlab simulation results shows that the proposed adaptive coding and modulation optimized transmission mode is superior to the traditional transmission methods.