Solar radiation and operation condition greatly influence solar aided coal-fired power generation(SACFPG) system.Based on a SACFPG system with its operating strategy considering both different direct normal insolation...Solar radiation and operation condition greatly influence solar aided coal-fired power generation(SACFPG) system.Based on a SACFPG system with its operating strategy considering both different direct normal insolation(DNI) and off-design load,a comprehensive criterion based on gray relation analysis considering the economic,thermal and environmental performance is proposed and used to evaluate of the annual performance of SACFPG system with/without storage under various policy conditions.It is found that solar subsidy,carbon tax,fuel price and the size of the solar field influence system's performance greatly.The results show that the initial investment of a SACFPG system is higher and the dynamic payback period is longer,but the addition of solar energy makes the total thermal efficiency higher and the environmental performance better.Specifically,the SACFPG system with storage has the highest thermal efficiency of 44.38% and the lowest CO_(2) emissions of 0.1114 kg/kWh.Under polices of solar subsidy and carbon tax,the economic performance is remedied.Therefore,according to the proposed comprehensive evaluation criteria,SACFPG system with storage is the highest at 0.667,followed by coal-fired plant and SACFPG without storage is the worst.With the development of technology,the costs of SACFPG systems would be lower,and the future of SACFPG is even brighter.展开更多
基金supported by the National Key Research and Development Program of China (No.2022YFB4202404)。
文摘Solar radiation and operation condition greatly influence solar aided coal-fired power generation(SACFPG) system.Based on a SACFPG system with its operating strategy considering both different direct normal insolation(DNI) and off-design load,a comprehensive criterion based on gray relation analysis considering the economic,thermal and environmental performance is proposed and used to evaluate of the annual performance of SACFPG system with/without storage under various policy conditions.It is found that solar subsidy,carbon tax,fuel price and the size of the solar field influence system's performance greatly.The results show that the initial investment of a SACFPG system is higher and the dynamic payback period is longer,but the addition of solar energy makes the total thermal efficiency higher and the environmental performance better.Specifically,the SACFPG system with storage has the highest thermal efficiency of 44.38% and the lowest CO_(2) emissions of 0.1114 kg/kWh.Under polices of solar subsidy and carbon tax,the economic performance is remedied.Therefore,according to the proposed comprehensive evaluation criteria,SACFPG system with storage is the highest at 0.667,followed by coal-fired plant and SACFPG without storage is the worst.With the development of technology,the costs of SACFPG systems would be lower,and the future of SACFPG is even brighter.
