Research On Risk Transmission Model And Simulation System Of Power Information Fusion On Energy Internet

Energy Internet is considered as the development direction to solve the problem of clean energy compatibility and deep and efficient control of power system.The research and practice of energy Internet is still in the initial stage of development,and its development path is increasingly common,construction standards are gradually formulated,and scientific and technological breakthroughs are carried out step by step.Power information fusion is an inevitable trend of energy Internet development,but in the process of power information fusion,multiple devices,heterogeneous networks,real-time sharing and open protocols will bring more risks and challenges in terms of structural evolution,power information interaction and information space security.In this paper,the structural evolution path of the power system coupled with the development direction of the energy Internet is considered prospectively,and the dynamic risks it may face are identified and simulated from the aspects of topological structure,interactive risks and system operation,and the planning and design idea of the risk transmission simulation platform for the power information fusion of the energy Internet is proposed.The main research contents of this paper are as follows:Considering the continuity and economy of power system construction,the simulation evolution mechanism and network characteristics of macro topological structure of energy Internet are studied based on the existing network structure.Firstly,the current research status of macro topological structure of energy Internet and the typical topological characteristics of foreign advanced power grids are analyzed.On this basis,a macro topological structure evolution model of energy Internet based on the existing grid structure—"Double ring framework,layered ring network,micro network interconnection"—is constructed.Finally,taking Beijing power grid as an example,the paper analyzes the evolution of energy Internet backbone network and complete network macro topological characteristics.In view of the trend of power information fusion on energy Internet,a typical binary network structure of power CPS is constructed and its vulnerability characteristics are analyzed.Firstly,the power side and information side network topological classification and node dependent strategy of typical power CPS structure are analyzed.On this basis.3 typical power CPS structures based on Beijing 220KV network were constructed,and its complex network characteristics are analyzed.Finally,the static vulnerability characteristics of typical power CPS networks are analyzed from three different aspects,including node interaction coefficient,network structure entropy and node centrality.The dynamic vulnerability analysis process is constructed to analyze the dynamic vulnerability of different power CPS networks.The case base and expert base of power system accident are constructed to analyze the risk disturbance relation of power information fusion system.Firstly,the case base is formed by statistics of domestic and foreign operation accidents of traditional power system,and the general trigger evolution process of major power failure is analyzed,and the trend of power and information interaction in the evolution of major power failure is analyzed.On this basis,the power CPS operation risk system is established from the aspects of environmental disturbance,component failure,interaction disorder,adaptive decline and management cognitive deficiency.Finally,the power CPS accident system for energy Internet is constructed,and the risk disturbance relation and hierarchy structure of power CPS operation are analyzed by dematel-ism model.Taking the risk of network attack as an example,the risk transmission process of power CPS for energy Internet is simulated.Firstly,the interaction points and paths of power CPS risk transfer facing the energy Internet are analyzed,and on this basis,the simulation process of power CPS risk transfer is established.Secondly,the risk transfer simulation architecture is constructed based on cellular automata,and the power CPS operation and risk transfer process are mathematically analyzed.Finally,taking the network attack risk—traditional but will be common faced in the future—as an example,the simulation model of cellular automata is adopted to simulate the risk transmission under different attack and defense strategies,different node self-healing rates and different over-limit thresholds by running on the constructed local network structure of"hierarchical autonomy and dual dependence".On the basis of model research,the planning and design idea of simulation platform for power information fusion risk transmission on energy Internet is put forward.From the platform construction principles and objectives,combined with the research needs to look forward to the platform medium-and long-term planning.On this basis,the platform implementation requirements are analyzed,and the framework structure,data model library,interface and other core parts are designed and analyzed.The research results will be gradually combined with the real power grid data for simulation,and provide simulation demonstration and decision support for the scientific development of energy Internet.This paper enriched the relevant theories of energy Internet information physical fusion and risk transmission,which had certain practical guiding significance for guiding the scientific and orderly development of energy Internet architecture,anticipating the dynamic risks of energy Internet power information fusion,and improving the level of proactive prevention and control of energy Internet risks in advance.