Reference compensation method for enabling dispatchability of the wind power generation using battery energy storage system

Abstract

Due to intermittent characteristics of wind power generation, battery energy storage system (BESS) has been exploited for decreasing the adverse impact of wind power output on the grid. This paper focuses on the BESS operation strategy called reference compensation for dispatchable wind. By adaptively compensating a reference signal that is typically set to be an average forecasted wind power for certain duration, the BESS maintains its SOC within a proper range, avoiding the non-compliant BESS when it is required to be charged or discharged because it is already fully charged or discharged, respectively, due to the unavoidable forecast errors. The proposed method has been applied to the real world wind farm data which is scaled down for the simulation in order to demonstrate its effectiveness of the proposed method. Simulation results demonstrate that the proposed method can decrease the operation suspension due to non-functioning BESS and keep the BESS on, and help thus enable the wind dispatchability.