Optimal selection and configuration of distributed generators considering the uncertainties in distribution systems

In order to consider the uncertainty of DG and loads, the interval number is used to describe the uncertainty of the wind speed and loads. The optimal selection and configuration of distributed generators model is established for distribution systems. The largest investment income for independent power producer of DG is taken as the objective function, and interval power flow is introduced to determine whether the planning scheme is a violation of nodal voltage constraints or power transmission constraints. The model was resolved by the proposed harmony search algorithm. Compared with the traditional probabilistic optimization model, the proposed model is introduced to cope with the uncertainties in optimal selection and configuration of DG and avoid the need for any probability information or membership functions of renewable energy sources and loads.