太阳能光热—光伏互补发电经济性分析

Solar thermal-solar power complementary economic analysis

光热—光伏互补发电技术是一种具备潜力的太阳能发电技术,有助于提高能源利用效率,提升电力系统消纳。以50 MW级槽式光热电站和50 MW级光伏电站为研究对象,分别测算光热、光伏发电量及初始投资。通过调整光热—光伏装机容量配比分别为1∶0、1∶1、……、1∶10,以及初始投资分别下降10%和20%时,以项目资本金财务内部收益率IRR达到8%和6%为目标,测算对应的上网电价。计算结果表明,当系统中光伏的比例增加时,所需的上网电价显著降低,表明光热—光伏互补发电具有良好的经济可行性。

Solar thermal-photovoltaic complementary power generation technology is a potential solar power generation technology,which helps to improve energy efficiency and increase power system consumption.Taking 50 MW trough solar thermal power plant and 50 MW photovoltaic power plant as the research objects,the solar thermal and photovoltaic power generation and initial investment are respectively measured.By adjusting the solar-thermal-photovoltaic installed capacity ratio to 1∶0,1∶1,...,1∶10,and when the initial investment drops by 10%and 20%,the financial internal rate of return of the project capital will reach 8%And 6%are the targets,and the corresponding on-grid electricity prices are calculated.The calculation results show that when the proportion of photovoltaics in the system increases,the required ongrid electricity price is significantly reduced,indicating that solar thermal-photovoltaic complementary power generation has good economic feasibility.