面向重构能力的多能配电网分层鲁棒协同扩展规划模型

Mesh-constructed and radial-operated features call for elaborate consideration of co-planning for multi-energy distribution systems(MEDS).Considering a reconfiguration channel can be constructed in advance to cope with extreme N-1 contingencies,this paper proposes a hierarchical robust expansion co-planning model for MEDS.By adopting convex hull relaxation and linearization techniques,the model is cast as a mixed-integer linear programming(MILP)problem with high accuracy.Specifically,the model is divided into four parts:master investment problem,feasible load cutting subproblem in normal scenarios or N-1 fault scenarios,and optimal operational subproblem.Based on defense-attack-correction methodology,a hierarchical solution incorporating adjustable N-1 contingency tolerance is developed to trade-off economy and reliability.Fur-thermore,a relaxation feedback method is applied to solve invalid feedback cuts of existing parameterization methods.Numerical test results justify the model can generate the best configuration for mesh-constructed MEDS,and the reconfiguration strategy under different adjustable N-1 contingency tolerances is also given as an output of the optimization.