Generation Method of Power Network Security Defense Strategy Based on Markov Decision Process
DOI:
https://doi.org/10.13052/dgaej2156-3306.3635Keywords:
Markov decision, power network security, defense strategy, offense and defense game.Abstract
Aiming at the problem that the current generation method of power network
security defense strategy ignores the dependency relationship between nodes,
resulting in closed-loop attack graph, which makes the defense strategy not
generate attack path, resulting in poor defense effect and long generation
response time of power network security defense strategy, a generation
method of power network security defense strategy based on Markov decision
process is proposed. Based on the generation of network attack and defense
diagram, the paper describes the state change of attack network by using
Markov decision-making process correlation principle, introduces discount
factor, calculates the income value of attack and defense game process,
constructs the evolutionary game model of attack and defense, solves the
objective function according to the dynamic programming theory, obtains the
optimal strategy set and outputs the final results, and generates the power
network security defense strategy. The experimental results show that the proposed method has good defense effect and can effectively shorten the
generation response time of power network security defense strategy.
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