A Global Decomposition Algorithm for Reliability Constrained Generation Planning and Placement

This paper presents a method of deciding the best placement of additional generation for long term generation adequacy planning in multi-area power systems. The approach uses evaluation of the prospective scenarios of additional generation, and tie-lines. Maximum number of additional generators in each area will be determined from the cost with respect to overall budget constraint. The selection criterion is based on improvement in system reliability after unit additions. The reliability indices of different generation combinations will be evaluated utilizing global decomposition approach. Instead of making direct comparison after global decomposition is performed, this paper proposes an algorithm that combines comparison and decomposition phase for better computational efficiency. The best combination will yield maximum reliability with acceptable cost