Static generation capacity expansion planning using linear transmission distribution factors

In this study, two formulations are been applied to solve the generation capacity expansion planning problem. The proposed formulation is obtained using the nodal admittance matrix so that the network balance constraints are transformed in a global power balance equation, and the transmission limit constraints are modeled using the power transmission distribution factors. The advantage of this formulation is the reduction of the equality constraints. Also, this formulation does not depend on the voltage bus angles. These improvements accomplish that the algorithm can speed up the convergence process, and produce better simulation time. Finally, the methodology has been implemented and exhaustively validated with two test power systems. It is quite evident from the comparisons that the proposed methodology provides the better formulation. The results of the proposed algorithm demonstrate the feasibility of improving the simulation time solving medium-scale power systems.