Abstract:
In response to the issues of low energy storage utilization rate and poor overall economic efficiency of multiple energy storage systems in a single application scenario in the new energy gathering area, the peak valley characteristics of the net load of the power grid as well as the error distribution characteristics of the new energy tracking plan are taken into account. In this context, energy storage can assist the system in peak shaving while aligning with the power generation plan. The energy storage operation area is divided into peak shaving area, tracking planning area and states of charge (SOC) optimization area based on the output characteristics and load power characteristics of the new energy. A coordinated and optimized operation strategy for energy storage zones in a centralized system is proposed for power generation plan tracking and peak shaving. Then, considering the factors such as new energy peak shaving cost allocation, tracking plan error penalty, energy storage cycle life cost, and energy storage charging and discharging conversion cost, the energy storage optimization operation models for different regions are established respectively, Indicators for overall tracking plan output effect evaluation of the collection system, peak shaving evaluation of the energy storage auxiliary system, as well as SOC evaluation of the energy storage system, are provided. Additionally, the optimization operation results of the collection system are assessed. The simulation results demonstrate that the proposed strategy can effectively enhance the output capacity of the new energy tracking plan, alleviate the peak shaving pressure of the system, reduce the overall operating cost of the new energy collection system, and ensure the sustainability of subsequent energy storage actions.