Multi-parameter optimization design method for energy system in low-carbon park with integrated hybrid energy storage

Abstract

Low-carbon parks composed of concentrated and contiguous low-carbon buildings has the characteristics of the high proportion of renewable energy penetration and low-carbon operation, requiring the transformation of relevant energy supply systems from being centralized to being centralized and distributed. However, the centralized and distributed energy supply method faces low levels of renewable energy utilization. Therefore, in this study, a low-carbon park energy system is constructed with a core of photovoltaics, wind power, lithium batteries, and heat storage tanks. A multi-parameter collaborative optimization method is proposed with the goals of cost reduction, carbon reduction, and independence by considering the parameters of equipment configuration and operation. The comprehensive benefits of a low-carbon park energy system under each low-carbon park are explored. The advantages of the system in terms of monthly carbon emission intensity, operation cost, maintenance cost, and interactive power are analysed. For the system, the balance of its energy supply and demand on a typical day and the role of energy storage in improving its utilization of renewable energy are analysed. Finally, the feasibility and benefits of the system's energy supply in different climate zones are further studied. The results show that the energy supply cost, carbon emissions, and interactive power are 31.0 CNY/m2, 4.1 kg/m2, and 2.4 kWh/m2, respectively, resulting in the best benefits for a unit area in a low-carbon park energy system in a high-rise residential park (Beijing). Energy storage can effectively improve the levels of renewable energy utilization, energy conservation and carbon reduction in the system. The low-carbon park energy system proposed in this article can significantly contribute to reducing carbon emissions in the construction industry.