为促进风电消纳,减少火电机组的碳排放,解决综合能源系统(Integrated Energy System,IES)低碳经济运行问题,文中引入变掺氧富氧燃烧技术对燃气机组进行改造,并结合利用液化天然气(Liquefied Natural Gas,LNG)冷能的液化空气储能(Liquid Air Energy Storage,LAES),提出了一种电热气冷IES低碳经济优化策略.首先,构建含变掺氧富氧燃烧燃气机组、利用LNG冷能的LAES、电转气(Power To Gas,P2G)设备、中央空调和溴化锂制冷机的 IES 架构,并建立各设备的数学模型;其次,引入阶梯式碳交易机制,建立了以系统运行成本最小为目标的电热气冷IES低碳经济调度模型;最后,采用MATLAB调用GUROBI求解器对多个场景进行求解,验证了文中提出的低碳经济优化调度策略可以提高系统的风电消纳、有效降低系统运行成本,实现碳减排.
Low Carbon Economic Dispatch of Comprehensive Energy System Considering Variable Oxygen and Oxygen Rich Combustion and Utilizing LNG Cold Energy LAES
In order to promote the consumption of wind power,reduce carbon emissions of thermal power units,and solve the problem of low-carbon economic operation of Integrated Energy System(IES),variable oxygen-doped oxygen-enriched combustion technology is introduced in this paper to transform the gas unit.Combined with Liquid Air Energy Storage(LAES),which uses the cold energy of Liquefied Natural Gas(LNG),an optimization strategy of low carbon economy for electric heating gas cooling IES is proposed.Firstly,the IES architecture of variable oxygen-enriched combustion Gas unit,LAES using LNG cold energy,Power To Gas(P2G)equipment,central air conditioner and lithium bromide chiller is constructed,and the mathematical models of each equipment are established.Secondly,the cascade carbon trading mechanism is introduced,and the low carbon economic scheduling model of electric and gas-cooled IES is established with the goal of minimizing the system operating cost.Finally,MATLAB is used to invoke GUROBI solver to solve multiple scenarios,which verifies that the low-carbon economy optimization scheduling strategy proposed in the paper can improve the system's wind power consumption,effectively reduce system operating costs,and achieve carbon emission reduction.
liquefied air energy storagelng cold energyoxygen rich combustionvariable oxygen dopingelectric heating and air cooling integrated energy system
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