等新能源消纳能力视角下的青海电网光热发电效益评估

Benefit Evaluation of Solar Thermal Power Generation in Qinghai Power Grid from the Perspective of Absorbing Capacity of other New Energy Sources

大力发展新能源发电是我国电力行业发展的重要目标,但仅靠风电、光伏来完成新能源消纳占比要求,将导致弃电率高居不下。光热发电储热环节具有调节能力,利用光热发电代替风电和光伏,可降低风电和光伏弃电率,同时发挥容量效益,降低火电装机规模及煤耗。但光热发电的高成本限制了光热发电的发展,如何评估光热发电在电力系统中的效益,对光热发展具有重要意义。提出一种等新能源消纳能力约束下的光热电站效益评估方法,可综合考虑光热发电的新能源装机替代效益、降低火电装机的容量效益、减少火电发电量的煤耗效益,从而全面评估光热发电在系统中的效益。研究成果可为青海光热发电的效益评估提供参考。

Vigorously developing new energy power generation is an important goal for the development of China's power industry,but only relying on wind power and photovoltaic to complete the consumption ratio of new energy requirements will lead to a high rate of power abandonment.The heat storage link of solar thermal power generation has the ability to adjust,and the use of solar thermal power generation instead of wind power and photovoltaic can reduce the rate of wind power and photovoltaic power abandonment,while playing the capacity benefit,reducing the installed scale of thermal power and coal consumption.However,the high cost of solar thermal power generation limits the development of solar thermal power generation.How to evaluate the benefits of solar thermal power generation in the power system is of great significance to the development of solar thermal power generation.This paper proposes a method for evaluating the benefits of solar thermal power plants under the constraint of equal new energy consumption capacity,which can comprehensively consider the replacement benefits of new energy installed in solar thermal power generation,reduce the capacity benefits of thermal power installed,and reduce the coal consumption benefits of thermal power generation,so as to comprehensively evaluate the benefits of solar thermal power generation in the system.The research results can provide reference for the benefit evaluation of solar thermal power generation in Qinghai Province.