This article proposes a novel capacity optimization configuration method of battery energy storage system (BESS) considering the rate characteristics in primary frequency regulation to improve the power system frequency regulation capability and performance.
A battery capacity configuration method was established in this study to increase the self-sufficiency rate ( SSR) and self-consumption rate ( SCR) of the system for a building complex by exploiting the battery resources. The PVB system designed for the building complex is divided into two categories: distributed and centralized storage.
The results and methodology relating to capacity configuration with the PVB system can be applied to large-scale building syntheses and used as a guide for battery capacity design in the PVB systems of building complexes. The efficiency of DC/DC in this study is adopted with the current device level.
The capacity configuration model for the hydro-wind-PV-battery hybrid system 3.4.1. Objective functions The configuration goals of the HWPBS are to maximize expected generation of renewable energy and minimize expected power abandonment and load loss by utilizing the flexibility of battery storage and existing hydropower.
The optimal capacity of battery storage is determined by selecting the turning point in the electricity curtailment sequence, where the power abandonment rate is approximately 3%. The optimal configuration results of the HWPBS under the CCP and DCP are shown in Table 9, Table 10.
Generally, battery storage is integrated with a PV system to solve the intermittent and fluctuant problems of solar resources, enhancing the relative independence of the PV–battery (PVB) system. In consideration of the economic benefits and system efficiency, it is necessary to investigate battery capacity allocation methods.