Fuzzy models for producers from natural resources

The electricity distribution planning problem consists of deciding which facilities (injection points and feeders) to construct to meet future injections. The uncertainty on future demands and independent producers´ injections in the distribution network introduce additional difficulties to the problem. This paper presents a framework to cope with the uncertainties, resulting from natural resources producers (mini-hydro and wind generation), based on fuzzy descriptions of the dispersed generation injections, leading to detailed models to be used in planning tools. The models considered include basic uncertainty and linguistic modifiers when extra information, from experts, is available. The approach proposed is useful both for operation and planning purposes