FUZZY OPTIMIZATION OF CAPACITORS IN DISTRIBUTION-SYSTEMS

To reach an optimal size, location and commitment schedule of shunt ca pacitors on a yearly based operations planning interval under the fuzz y environment, a fuzzy set theory based multistage optimisation is dev eloped, where the loads, source voltage and objective function are all expressed in fuzzy set notations. To verify its effectiveness, the pr oposed approach is applied to a real distribution system. Results from the simulation show the advantages of this approach over the conventi onal crisp shunt capacitors compensation method in radial distribution systems. This provides good prospects for its application in practica l distribution system compensation problems in an environment of uncer tainty and vagueness.