Distributed Generation Planning Based on Multiobjective Static Fuzzy Model

A static fuzzy multiobjective model is proposed to optimize the site selection and the capacity of distributed generation(DG) as well as the proportion of adopted different DG technologies in the distribution network planning.In the proposed model,the conflicting and competing objective functions,in which economic,technical and environmental attributes are taken into account,are optimized.In these objective functions,the profit from selling electricity by DG is taken as the economic objective function,in which the marginal revenues of DG is considered;the minimum of the weight sum of risk values of technical parameters exceeding over the ranges specified in technical standards is taken as the technical objective function;the minimum of pollutant emission is taken as environmental objective function.In the proposed framework for DG planning,the features of six DG technologies are considered and fuzzy members are used to research the uncertainty of the proposed planning model,including load demand,electricity price,and operation and investment cost of DG.Effectiveness and correctness of the proposed planning model are verified by simulation results of IEEE 37-bus system.