| Since the state adopted blockchain as the core technology of independent innovation in 2019,the trial implementation of blockchain technology has been widely accelerated in power industry.As an information infrastructure in a new type of infrastructure,in many aspects,such as collaborative scheduling,the blockchain can be technically integrated with the Energy Internet and the distributed cyber energy system,which can well support intelligent devices such as energy routers to realize their own functions.However,due to the wide-area geographic distribution and random volatility of renewable energy,as well as the time and space asynchrony of some energy forms,and the deep coupling characteristics of energy flow and information flow,the energy router is under more and more challenges such as the urgent need to further improve its distributed optimization control capability and safety assessment level.Firsly,this thesis considered the technical integration of blockchain and energy routers,and carries out modeling analysis of distributed cyber energy system based on blockchain:In the power system where clean energy is entered to the grid,the application scenario model of the energy router under the blockchain architecture is proposed,simultaneously,an energy router node model based on Quality of Service indicators has also been established;And learn from the complex network theory,use some mathematical theories,a distributed information energy system network architecture model with energy routers as nodes is established.Secondly,research on the control strategy of energy routers under the blockchain architecture:Combining the node model of the energy router and the load forecast value constraints,based on the master-slave multi-chain structure,the QoS index layer and the blockchain negotiation layer are defined,as well as their respective evaluation norms and negotiation rules.And introduce an algorithm and the Multichain platform to simulate the output of the multi-energy power plant under the multi-chain structure,which verifies the evaluability of energy flow QoS indicators and the feasibility of using the multi-chain structure in the energy router operating scenario model.Finally,research on the safety assessment of energy routers under the blockchain construction:Combining the different characteristics of information and energy side,based on the comprehensive importance of blockchain nodes,it carried out security assessment analysis and modeling.A node influence assessment considering the dual-network coupling scale has been constructed,and an assessment method that can be modified by objective factors and subjectively weighted is proposed.The simulation verification shows that the node importance calculation can effectively optimize the search process of the system key grid to make sure that the nodes and lines with high importance are covered,which can provide an important reference for the attacker(/defender)to search for the optimal attack path(/key protection path). |
