Allocative approach to multiple energy storage capacity for integrated energy systems based on security region in buildings

The application of security region enables swift evaluations within integrated energy systems involving planning, operation, and control. Multiple energy storage, compared to a single-type storage system, offers advantages in complementary performance, thereby enhancing the overall efficiency of integrated energy systems. This study proposes an allocative approach to user-side multiple energy storage capacity based on security regions. Analyzing the interplay between hourly loads and intraday hourly average loads allows for determining the charging and discharging strategy tendencies of multiple energy storage systems. A cost-effective multiple energy storage configuration can be achieved by considering the prices of energy conversion devices, energy storage equipment, and energy. Case studies indicate the applicability of the proposed method across various building types and sizes. Reasonable multiple energy storage configurations can reduce economic costs and mitigate the integrated energy conversion system configuration. Furthermore, this study explores optimal configuration plans for diverse load scenarios, indicating the influence of peak-valley period characteristics on energy storage selection. The proposed method can serve as a valuable tool for integrated energy planning, promoting sustainable development in buildings, cities, and regions.