Fuzzy load flow in balanced and unbalanced radial distribution systems incorporating composite load model

This paper presents a fuzzy approach load flow for balanced and unbalanced radial distribution systems with incorporating load model. Fuzzy set theory proposes an appropriate way to model inexactly expressed information and data which have uncertainty. In this paper the combination of fuzzy models and techniques for electrical distribution systems is presented. The theories relating to the fuzzy numbers are simplified into a form suitable for practical application. The utilization of fuzzy approach is demonstrated by a radial load flow method where the voltage in the substation and the power demands are represented by fuzzy numbers.