Stochastic Hardening Planning for Electric Cyber-physical System Considering Structural and Functional Coupling
To improve the resilience of electric cyber-physical system(ECPS)against typhoon disasters,we proposed a collaborative stochastic hardening model for power and communication network considering the structural and function-al coupling based on the two-stage stochastic optimization method in this paper.The first stage of the model took into account the structural coupling characteristics of the power/communication lines,and determined the reinforced power/communication lines with the objective of minimizing the total reinforcement investment and typhoon damage expecta-tion,where the typhoon damage expectation was calculated by the second stage.The second stage minimizes the expec-tation of failure loss of ECPS under random typhoon scenarios,considering functional coupling.In order to generate a representative typhoon scenario set and ensure the adaptability of the stochastic hardening scheme,according to the mapping relationship between typhoon scenario destruction features and ECPS fault loss,a reduction scenario set gener-ation method based on Gaussian mixture model(GMM)clustering was proposed.Finally,based on the Progressive Hedging algorithm to solve the stochastic hardening model,the simulation analysis of the IEEE RTS 79-node informa-tion-physical system proves that the stochastic hardening planning method proposed in this paper has a good resilience enhancement effect on ECPS.
electric cyber-physical systemresiliencehardeningtwo stage stochastic optimizationstructural and functional coupling
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