在"双碳"目标背景下,针对热电联产机组"以热定电"模式导致的弃风问题,文章提出了一种考虑可再生增强型地热系统(Regenerative Enhanced Geothermal System,REGS)和可调热电比的综合能源系统(Integrated Energy System,IES)优化调度模型.首先,构建干热岩提取循环等模型,分析了能量分配系数对于REGS作为源端的热电可调节机理;其次,研究了REGS配合光热电站和热电联产机组耦合运行机制,分析了耦合运行改善热电比的机理,并引入广义机组热电比控制模型;再次,以购能成本、运行成本、运维成本、弃风成本及碳税成本之和最小构建目标函数进行优化求解;最后,利用西北某地区实际数据进行算例分析,验证了所提模型能够提高系统经济性和风电消纳率,减少碳排放.
Optimal dispatch of integrated energy system considering REGS and adjustable thermoelectric ratio
In the context of the"double carbon"target,a comprehensive energy system optimization and scheduling model considering REGS and adjustable thermoelectric ratio is proposed to address the abandonment problem caused by the"heat-determined"mode of CHP units.Firstly,we construct a model such as dry heat rock extraction cycle,and analyze the energy allocation coefficient for REGS as the source of thermoelectric adjustable mechanism;secondly,we study the coupling operation mechanism of REGS with solar thermal power plant and cogeneration unit,analyze the mechanism of coupling operation to improve thermoelectric ratio,and introduce a generalized unit thermoelectric ratio control model;thirdly,we construct an objective function with the sum of energy purchase cost,operation cost,operation and maintenance cost,wind abandonment cost and carbon tax cost;finally,the proposed model is verified to improve the system economy and wind power consumption rate and reduce carbon emission by using the actual data of a region in Northwest China.
cogeneration unitsREGSsolar thermal power plantsbroad unit thermoelectric ratiowind power consumptioncarbon emissions
万方数据
维普
