Journal of Lanzhou University of Technology ›› 2021, Vol. 47 ›› Issue (3): 78-85.

• Automation Technique and Computer Technology • Previous Articles     Next Articles

The analysis of the robustness of cyber-physical power systems based on community-generated structure

PU Wu-jun1, PAN Huan2   

  1. 1. Department of Mathematics, Longnan Teachers College, Longnan 742500, China;
    2. School of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China
  • Received:2020-10-10 Online:2021-06-28 Published:2021-07-19

Abstract: With the rapid development of sensor technology, the deep integration of information network and power grid, the intelligent level of power system is higher and higher, but it also faces a series of problems such as security, vulnerability and so on. Combining the interdependent network with the load-capacity cascading failure model, a cascading failure model including power network and cyber network island operation is proposed to mainly study the robustness of the cyber-physical system (CPS) with community structure. The traditional community structure generation algorithm is modified to generate a scale-free network with different sizes of communities and adjustable connection probability of communities. The proposed algorithm is adopted to generate the CPS model of the cyber network and the internal coordination of the grid community, the proportion of the remaining nodes of the grid is used as the evaluation index. When the control center is in different communities, the influence of global connection probability, community connection probability, and multiple control centers on the robustness of power CPS is studied by simulating cascading failure reaction.

Key words: power grid, cascading failure, community structure, cyber-physical system

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