Robustness And Flow Coupling Behavior Analysis Of Smart Grid Based On Coupled Network

In recent years,smart grid technology development by more and more countries concerned.At the same time,our country has also issued many related policies to support the development of smart grid.As of 2011,China's smart grid construction has entered a comprehensive construction phase,Smart Grid,in short,is an intelligent power network,at the same time,there are also saying that "Grid 2.0." The smart grid is based on an integrated,high-speed real-time communications network that achieves some of the high standards of the power grid through a series of advanced monitoring and sensing technology,intelligent automation and control,and modern equipment:Robustness,stability,safety and environmental friendliness.In view of this,the sustainable development of smart grid can not be separated from the development of power system related communication technology.At the same time,the construction of China's smart grid has its own unique place:It is based on China's current national conditions and draws on some advanced experience in the construction of smart grids abroad so as to build a strong and smart grid with China's own characteristics.In view of this,it is of great significance to carry out the robustness study of the two-layer coupling network based on power network and communication network for the development of China's smart grid.This paper first studies the robustness of a smart grid based on a two-layer coupled network.First of all,the power network and the communication network in the smart grid are themselves each a large number of nodes,complex networks connected complex;Second,the two support each other,rely on,forming a mutual coupling of the two-tier complex network.Therefore,based on the seepage theory and camera fault in the field of complex networks,this paper studies the robustness of the two-layer coupled networks in power grid and communication network in smart grid.Then,this paper proposes a smart grid robustness enhancement algorithm based on the importance of nodes.The core of the algorithm is to take corresponding protection measures according to the different roles of nodes in the two-layer coupled networks,and then to achieve a lower cost As much as possible to enhance the robustness of the two-tier coupled network.Then,this paper analyzes the coupling between current and information flow in a two-layer coupled network of smart grid.With the development of society,people's demand for electricity is diversified.The power network has faced tremendous pressure on the capacity of communication networks.The surge of business types and business traffic in the smart grid will generate a large amount of information flow.When there is a problem with the flow of information,the power nodes will be in disorder in control.In the same way,when the power supply is damaged,the flow of information will also be affected.Therefore,this paper studies the coupling between the two by abstracting current and information flow into the network,and further studies the impact of such behavior on the robustness of the smart grid.At the same time,based on the further improvement of the robustness improvement algorithm of smart grid,combined with information flow and electric current,a novel control strategy based on flow center is proposed.Finally,this paper verifies the effectiveness of the proposed algorithm in improving the robustness of the existing smart grid structure through simulation experiments.