Energies, Vol. 18, Pages 6421: Multi-Objective Cross-Entropy Approach for Distribution System Reliability Evaluation
Energies doi: 10.3390/en18246421
Authors:
Lucas Fritzen Venturini
Beatriz Silveira Buss
Erika Pequeno dos Santos
Leonel Magalhães Carvalho
Diego Issicaba
Reliability evaluation of power distribution systems is computationally intensive, as standard Monte Carlo simulations require extensive sampling to accurately estimate rare event-based indices like SAIDI and SAIFI. This paper introduces a multi-objective cross-entropy approach for reliability evaluation of power distribution systems, aiming to accelerate reliability evaluation by optimizing importance sampling reference parameters. The multi-objective approach aims to optimize a set of objective functions related to systemic and load point reliability indices. A deduction of an analytical solution for the optimization of reference parameters of the cross-entropy method is developed, taking into account the standard hypotheses used in reliability assessments. The proposed method has been validated on a real 181-node Brazilian distribution feeder. Results show that the proposed approach can accelerate the convergence of estimates for reliability indices in comparison with the crude Monte Carlo approach and the single-objective CE method.