Architecture Design And Performance Analysis On Smart Grid AMI System Based On Multi-operation Center

With the development of power electronics and network communication technology,smart gird has become the important means to solve problems of low energy utilization and the lack of automation capacity in the traditional power grid.Advanced Metering Infrastructure(AMI)as the core of smart grid with two-way data transition,has been widely used.However,the traditional centralized architecture of the AMI system has a huge bottleneck on information transmission and information processing.As the number of users and the average data generation rate increase,the performance of the AMI system will decline.Therefore,how to design a highly scalable,reliable and automated smart grid network to support two-way power and information flow has become the hot point in the current research.In this thesis,distributed ideology is applied to the architecture design of AMI system,a new multi-operation center(i.e.,distributed)architecture is proposed,and its scalability and reliability are analyzed.The main works of this thesis include the following aspects:(1)This thesis analyzes three kinds of architecture models,the architecture of centralized,first-order MDMS distributed and first-order fully distributed AMI systems,and designs a second-order distributed architecture.Compared with the first-order architecture,it has more flexibility in application configuration.(2)In order to minimize the total cost,the optimization problem is constructed,and the nearly optimal algorithm is applied to the optimization problem.The parameters of the smart grid are optimized and the results are better than the similar studies.(3)The theoretical analysis of the scalability and reliability of the four architectures is carried out,and a criteria used in the reliability analysis is proposed in this thesis.(4)The simulation results are compared with the theoretical analysis results,and some suggestions are given for the design of the system.