摘要
电转气(power to gas, P2G)技术可将电能转化为天然气,在实现综合能源系统低碳经济调度方面发挥着重要作用。为解决P2G过程中O_(2)未充分利用的问题并进一步降低碳排放,文中提出一种考虑P2G富氧改进和混合光能利用的低碳综合能源系统。首先,利用P2G生产的O_(2)与CO_(2)混合作为助燃气体,P2G利用碳捕集的CO_(2)制造天然气供给燃气机组使用;然后,因锅炉效率受O_(2)浓度影响,通过遗传算法和Gurobi求解器的联合算法得出耗氧设备各时段的最优供氧状态;最后,通过混合光能利用提升光能效率,以减少化石能源使用。将富氧燃烧和混合光能利用引入综合能源系统,构建考虑P2G富氧改进和混合光能利用的综合能源系统低碳经济运行模型,并设置场景进行对比验证。仿真结果显示,对比富氧改进前CO_(2)排放量降低75.83%,对比无混合光能场景光能总出力增加9.79%,表明所提模型可有效降低碳排放和运行成本。
Power to gas(P2G)technology converts electricity energy into natural gas,playing an important role in achieving a low-carbon economic dispatch in an integrated energy system.To solve the problem of underutilized oxygen in the P2G process and further reduce carbon emissions,a low-carbon integrated energy system that considers P2G oxygen-enriched improvement and combined solar energy utilization,handling carbon reduction from the following aspects is proposed.Firstly,the oxygen produced by P2G is mixed with CO_(2) as an assistant combustion gas,and P2G utilizes captured CO_(2) to produce natural gas for gas-fired units.Secondly,because the boiler efficiency is affected by the oxygen concentration,the optimal oxygen supply state for each period of the oxygen-consuming equipment is determined by a combined algorithm of genetic algorithm and Gurobi solver.Finally,the solar energy efficiency is improved by using mixed solar energy to reduce the use of fossil energy.By introducing oxygen-enriched and combined solar energy into the integrated energy system,a low-carbon economic operation model of the integrated energy system is constructed,and scenarios are set for comparison and verification.The simulation results show that the CO_(2) emissions are reduced by 75.83%compared to the oxygen-enriched improvement before,and the total solar energy output is increased by 9.79%compared to the scenario without combined solar energy,indicating that the proposed model can effectively reduce carbon emissions and operating costs.
作者
杨晓辉
万钊
肖日瑛
杨泽宇
胡泽成
吴迟绿
YANG Xiaohui;WAN Zhao;XIAO Riying;YANG Zeyu;HU Zecheng;WU Chilyu(School of Information Engineering,Nanchang University,Nanchang 330031,China)
出处
《电力工程技术》
北大核心
2025年第4期167-176,共10页
Electric Power Engineering Technology
基金
江西省自然科学基金资助项目(20232BAB212021)。
关键词
电转气(P2G)
富氧燃烧
混合光能
碳捕集
综合能源系统
O_(2)浓度
power to gas(P2G)
oxygen-enriched combustion
hybrid solar energy
carbon capture
integrated energy system
oxygen concentration
