Optimal power flow-based calculation of transmission constraint cost

Abstract

As the construction of High Capacity transmission lines becomes a social issue, construction conditions of power system are being worsened, resulting in the decrease of power supply capacity and increase of supply costs. Because of this, feasibility for construction of High Capacity transmission lines needs to be explained logically, and the most effective method is to present economic effects such as the change of transmission constraint costs and power production costs. This paper intends to propose an Optimal Power Flow(OPF)-based method for calculation of constraint costs due to the construction of new transmission lines and to use it in order to perform case study for High Capacity transmission lines which will be constructed in Republic of Korea.