Scenario Based N-1 Transmission Expansion Planning using DC Mixed Integer Programming

This paper presents a scenario based mixed integer programming method to solve the transmission expansion planning problem with security constraints. To consider the N-1 line outages, the scenarios are introduced as a predefined set of parameters in the mathematical model. A DC power flow model is used as a simplified approach to represent the electrical system. The proposed expansion planning model is applied to the well known Garver 6 bus test system and a realistic 46 bus Brazilian test system. The versatility of the proposed method gives the freedom to test the expansion planning as a complete one-stage approach and as the common two-stage approach. The simulation results are presented to draw a conclusion of the performance of the proposed method.