Microgrid Intra-day Scheduling Considering Reactive Power Capability of Electric Element

A mixed integer linear programming model, which can be used in microgrid (MG) intra-day scheduling, is put forward in order to conciliate further the desired attributes of accuracy and computational performance of solving existing model. The proposed model is the minimization of MG economic operation cost considering reactive power capability of distributed generation (DG). Compared with the literature of microgrid economical dispatching, the linearized constraint model, such as power flow with voltage amplitude limitation, DG reactive power characteristic and branch capability based on analytic geometry, exchange power and power factor of point of common couple, and et al, is included in the paper. The performance of the proposed model and accuracy of the results are verified by using an experimental microgrid for engineering practical purposes. Finally, the effects of different segments on the feasible region coverage of DG operating point are discussed.