Bi-level Multi-objective Optimization Strategy for Fault Recovery and Reconstruction of AC/DC Complex Distribution Networks
To address the operational control issues arising from the high penetration of renewable energy integration and DC load growth,the paper conducts a study on fault recovery and reconfiguration strategy for AC/DC complex distribution networks under fault conditions.A bi-level multi-objective model is established with both the optimization of islanding and network reconfiguration.In the upper model,the maximum load recovery within the island is optimized.In the lower model,a multi-objective optimization is implemented including the maximal total load recovery after the distribution network fault reconstruction,the highest operational reliability,and minimum costs.Aiming at the bi-level multi-objective interaction,high dimension,nonlinear characteristics,candidate solution set is given by the analysis of the network topological structure.CPLEX and the improved fireworks algorithm are employed to solve them.The simulation results demonstrate that the proposed model can enhance the renewable energy integration and load recovery,and the solution method can improve optimization efficiency.
high proportion of renewable energyreconstructionimproved fireworks algorithmAC/DCbi-level multi-objective
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