Adequacy evaluation of a small area in a large composite power network

A methodology is presented which can be used to conduct adequacy studies, considering both the continuity and the quality of power supply as failure criteria on a small area in a large power network. The technique is simple and can be used with existing computer programs to determine the adequacy performance of a power network. It also considers all credible outages that can affect the adequacy of the small area in a power system. The main disadvantage is that the efficiency of the method depends on the size of the small area as compared to the size of the entire power network. The efficiency also depends on the network topology, the type of buses in the small area, and the load-curtailment philosophy. Some of these issues are illustrated by applying the methodology to the IEEE Reliability Test System. A qualitative comparison of the proposed method with two other methods that can be used to determine the adequacy of large power networks is presented