Probabilistic Reliability Evaluation for 765KV Transmission Lines in KEPCO Grid Expansion Planning

The importance and necessity of conducting studies on grid reliability evaluation have been increasingly important in recent years due to the number of black-out events occurring through in the world. Quantity evaluation of transmission system reliability is very important in a competitive electricity environment. The reason is that the successful operation of electric power under a deregulated electricity market depends on transmission system reliability management also in Korea it takes places. This paper presents the probabilistic reliability evaluation for 765kV transmission lines in KEPCO grid expansion planning. The transmission reliability evaluation for large-scale systems (TRELSS) Version 6.2, a software package developed by electric power research institute (EPRI) is utilized in determining probabilistic reliability evaluation indices of KEPCO-system