Two-Stage Robust Optimization for Transmission Network Expansion Planning Considering N-K Security Criterion

Considering the impact of extreme weather on the reliability of the power system is of great significance and value. First, the N-k uncertainty set is defined to describe the fault scenarios of generators and transmission lines. Next, the objective function and constraints of the transmission network expansion model are provided. The objective of the two-stage robust optimization planning model is a min-max-min problem. Therefore, the Column and Constraint Generation (C&CG) algorithm is used to solve the problem, iteratively obtaining the global optimal solution of the model. Finally, case study verifies the effectiveness of the transmission network source-network coordinated two-stage robust optimization planning model, demonstrating that it can achieve economic objectives while incorporating the reliability of transmission network planning and operation.