Research On The Robustness Of Power Communication Interdependent Network

As China’s economic strength continues to increase,the interconnection between the various types of infrastructure becomes more and more closely.Power networks are also moving in the direction of information flow.This means that the Power Systems and the depth of the combination of communication networks,the two form an interdependent network.The Power Systems relies on real-time control of the communication network,and the communication network relies on the power support of the Power Systems.This approach,however,causes the failure of elements in one network to be cascaded to another network and lead to the failure of dependent components.The large-scale blackouts in recent years are strikingly similar.A power plant failure triggers a recursive process between the Power Systems and the communication network.This recursive process has very serious consequences,and the economy suffers great losses.Therefore,the cascading failure between electric power communication networks is an urgent problem to be solved.Based on the above background,this thesis studies the following:(1)This thesis first introduces the research background and significance of the research,summarizes the domestic and foreign research status of the dependent network,introduces the relevant theoretical knowledge of the dependent network,and analyzes the robustness research method of the traditional power network.(2)For interdependent power communication networks,considering the idealized model,simulate it as a corresponding dependent network.Then the power communication network is considered as an idealized model,which is modeled as a one-to-one dependent network.A cascade fault model of load capacity is proposed.The comparison of the robustness of single power network and interdependent network,and the influence of the attack mode,the average degree and connection mode on the robustness of power communication network are studied.(3)The topology modeling of 200 KV power network and its communication network in East China is analyzed,and its network characteristics are studied,and the similarity between power network and communication network is discussed,and the robustness of the network in two different attack modes is compared.A link addition strategy based on low inter degree difference is proposed.Compared with the link addition strategy of low degree and random inter degree–degree difference,the simulation proves that the algorithm can improve the robustness of the network.