Coordinated Generation and Transmission Expansion Planning with Short Circuit Level Constraint and Multi-Level Loads

This paper proposes a novel approach for coordinated generation, transmission expansion planning with MILP formulation considering security analysis and the cost of generation of the power plants and the investment cost of substations are reduced. Optimal power flow is considered for different load levels and the transmission lines do not limit the optimal power flow. Therefore, the cost of generations will be decreased. Accordingly, short circuit level constraint is considered by a hierarchical approach. Thus, the investment cost of substations is decreased. In addition, N-1 security is taken into account in the main problem with MILP formulation. The proposed approach is applied to Garver 6-bus and IEEE 24-bus test systems in MATLAB and the results are compared with the other papers and show good performance of the proposed approach.