Energy Management Strategy for Hybrid Energy Storage of Traction Load with Peak Shaving and Compensation of Forecast Errors

Aiming at the problem of lack of peak clipping due to the lack of peak clipping due to the dual application of traction load in peak clipping and valley filling and compensation of forecast errors, a dual-application hybrid energy storage energy management strategy that takes into account the lack of peak clipping is proposed. First, analyze the reasons for the lack of peak clipping in dual applications, determine the target domain of dual applications that take into account the lack of peak clipping, and determine the total power required by the hybrid energy storage based on the target domain. Secondly, the wavelet transform is used for the initial power distribution. On the basis of the initial distribution, in order to avoid the internal circulation of the energy storage, the power direction of the energy storage is corrected, and then according to the state of charge (SOC) of the energy storage, in the dual application The energy storage power size is revised twice in the target domain to improve the power supply capacity of the energy storage. Finally, according to the measured data, MATLAB is used for experimental verification, and the result proves the necessity of compensating the lack of peak clipping and the effectiveness of the energy management strategy proposed in this paper.