Optimal configuration of battery energy storage system for peak-load regulation

摘要

As is well known, the anti-peaking characteristic of wind generation leads to evident curtailments of wind farms. With high energy density and flexible installation position, the battery energy storage system (BESS) can provide a new routine to relax the bottleneck of the peak-load regulation, conducive to the absorption of wind power and the economy of system operation. Therefore, with taking account of both total costs and peak-load regulation benefits of BESS, a benefit-evaluation model for the optimal configuration of BESS is proposed in this paper. This model is formulated as a unit commitment (UC) problem, and solved by CPLEX with the utilization of piecewise linearization. The simulation on a modified IEEE 30 bus system demonstrates the validity of this model. The sensitivity analysis illustrates investment costs of BESS and wind curtailment penalties have significant impacts on the benefit evaluation and the optimal configuration of BESS.