Optimal schedule strategy of battery energy storage systems for peak load shifting based on interior point method

In this paper, the peak load shifting mathematical optimization model of battery energy storage system (BESS) in a micro-grid is established. The interior point method has been used to solve the model and obtain each scheduling period's BESS power, as a result, can achieve the optimal operation of BESS and the peak load shifting purpose in the micro-grid. An islanding micro-grid was adopted for simulation analysis. The simulation results show that the peak load shifting effect using energy storage is excellent. It is compared with constant power charging and discharging method and the results show that the load curve obtained by the proposed method in this paper was more smoothing than the constant power charging and discharging method and the peak load shifting effect proposed in this paper is also more excellent.