Evaluating efficiency of renewable energy sources in planning micro-grids considering uncertainties

Authors : Vu Van THANG, Nguyen Hien TRUNG

Pages : 14-25

Doi:10.30521/jes.507434

View : 8 | Download : 5

Publication Date : 2019-03-31

Article Type : Research Paper

Abstract :Nowadays, the renewable energy sources insert ignore into journalissuearticles values(RES); are widely utilized in micro-grids due to technical development and emission increase, which make the planning the micro-grids integrated the RES very important. To obtain the optimal planning strategy and evaluating efficiency of the RES in micro-grids, a mixed integer programming insert ignore into journalissuearticles values(MIP); planning framework for a grid-connected micro-grid is presented in this study. The understudy micro-grid consists of the wind turbines and photo-voltaic systems, which are connected to utility grid through the point of common coupling insert ignore into journalissuearticles values(PCC);. The objective function is minimizing the life cycle cost of object comprising of the investment and operation cost of the RES, the energy purchased cost from the utility grid, the emission taxes cost and the replacement cost or residual value of equipment at the end of the planning period. The uncertainties of load, electrical price, wind speed and solar radiation are taken into consideration and then a combinable model with the clustering technique is utilized to integrate them. Finally, numerical simulations for a test grid-connected micro-grid are made to validate the effectiveness of the proposed model and show efficiency of the RES to can apply to practical micro-grids.
Keywords : Emission, Life cycle cost, Micro grid planning, Renewable energy sources, Uncertainties