OPTIMIZING THE ELECTRICAL ENERGY DISTRIBUTION SYSTEMS DESIGN BY MULTIOBJECTIVE MODELS

Classic models for distribution systems design have usually considered only basic aspects such as power capacity limits, power demand requirements and the minimization of a single‐objective function that represents the total system expansion cost. However, multiobjective design models include aspects such as reliability evaluations, the optimal voltage profile in the network, social amenity values and geographical conditions of the study area, as well as the basic design aspects. In this paper, a multiobjective model is presented for optimal design of distribution systems by finding the best reliability of the network and the least expensive system expansion simultaneously. A multiobjective method used in applications of the model to practical distribution systems design problems is outlined. The computer results indicate that multiobjective models achieve satisfactory solutions, which consider multiple objectives simultaneously. These solutions, preferred by the planner, are advantageous compared with the classic design solutions.