Research on the Application of Photovoltaic-Energy Storage Systems in Auxiliary Power of Concentrating Solar Power Plants

With the continuous development of concentrating solar power (CSP) technology, how to reduce the adverse impact of auxiliary power load on the on-grid electricity of CSP units and further improve economic benefits has become a key focus in the industry. At present, in-depth research on the technical points of using photovoltaic-energy storage (PV-ESS) systems to supply auxiliary power for CSP plants is still lacking. Based on an in-depth analysis of the auxiliary power wiring scheme and load characteristics of tower-type CSP plants, this paper proposes a reasonable scheme for integrating PV-ESS systems into the auxiliary power system of CSP plants, establishes a capacity planning model for PV-ESS systems, and presents a solution method. The proposed scheme can increase the on-grid electricity and economic benefits of CSP plants, and provide a reference for similar projects.