Concentrating solar power (CSP) station is counted as a promising flexible power supply\nwhen the net load power curve is duck-shaped in high photovoltaic (PV) penetration power system,\nwhich may lead to the serious phenomenon of PV curtailment and a large-capacity power shortage.\nThis paper presents a mitigation strategy that replaces thermal power station with CSP station to\nparticipate in the optimal operation of power system for solving the duck-shaped net load power\ncurve problem. The proposed strategy utilizes the dispatchability of thermal storage system (TSS)\nand the fast output regulation of unit in the CSP station. Simultaneously, considering the operation\nconstraints of CSP station and network security constraints of the system, an optimization model is\ndeveloped to minimize the overall cost including operation and penalty. The results obtained by\nnonlinear optimization function demonstrate that the replacement of concentrating solar power\n(CSP) station contributes to reducing the PV curtailment and lost load, while increasing the available\nequivalent slope for power balance. Thus, the proposed mitigation strategy can promote the\npenetration of PV generation and improve the flexibility of power system.
Loading....