2-STAGE POWER-SYSTEM DISTRIBUTION PLANNING ALGORITHM

A two-stage power system distribution planning algorithm is developed for solving sizing, location and timing problems of distribution subst ations and primary feeders. This comprehensive algorithm involves an a ccurate small-area electric load forecasting procedure, and provides t he flexibility for both static- and dynamic-planning application modes . Also, the algorithm includes a new nondiscrete planning model which accurately simulates the different cost functions of substations and p rimary feeders. Moreover, constaints on voltage drop, equipment capaci ty and power-conservation constraints are included in the planning pro blem formulation. Finally, the proposed algorithm is illustrated using a detailed numerical example, and subsequently tested for both effici ency and accuracy.