摘要
针对双碳背景下新能源占比逐渐提高的新型电力系统中燃煤机组调峰运行的碳经济性评估问题,建立了燃煤机组调峰碳经济分析模型,定义了单位发电碳排放率、消纳单位新能源发电碳排放增长率等碳经济性评价指标,研究了不同典型燃煤机组在电力系统中消纳新能源发电的碳经济性。结果表明:燃煤机组深度调峰至30%时,单位发电燃煤和碳排放成本之和增长约12%,但考虑消纳新能源发电带来的减碳效益,电力系统单位发电碳排放成本下降超过75%;在电力系统中新能源发电比例从0.1提升至0.8时,大容量高参数机组消纳单位新能源发电额外碳排放成本增长幅度相比中小容量机组低约30个百分点。
In order to evaluate the carbon economy of peaking shaving operation for coal-fired units in the new power system under the background of carbon peaking and carbon neutrality goals,a carbon economic analysis model for peak shaving of coal-fired units was established,and carbon economy evaluation indexes such as carbon emission rate per unit power generation and carbon emission growth rate per unit accommodation of renewable energy generation were defined.Then,the carbon economy of typical coal-fired units for the accommodation of renewable electricity in the power system was studied.Results show that the total cost for coal combustion and carbon emission per unit power generation increases by about 12%when coal-fired units are operated at the deep peak shaving state with 30%of rated power.However,considering the carbon reduction benefits by renewable power generation,the carbon emission cost per unit power generation of power system is decreased by more than 75%.Under the scenario of increasing the proportion of renewable power in the power system from 0.1 to 0.8,the additional carbon emission cost per unit accommodation of renewable power by large-capacity and high-parameter units is about 30%lower than that of small and medium-capacity units.
作者
袁荣胜
俞聪
刘明
严俊杰
YUAN Rongsheng;YU Cong;LIU Ming;YAN Junjie(School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou 310000,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2022年第11期1033-1041,共9页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(52022079)。
关键词
燃煤机组
辅助调峰
新能源发电
碳经济性
coal-fired power units
auxiliary peaking
renewable power
carbon economy
