需求响应下的电制氢多模式利用综合能源系统优化调度

Optimized scheduling for an integrated energy system with multi-modal utilization of electric hydrogen production under demand response

为了解决综合能源系统中可再生清洁能源消纳受限、碳排放量增加、能源利用效率较低的问题,提出一种提高可再生能源消纳并减少碳排放的优化调度策略。首先,将新兴技术组合的碳捕集与利用系统(carbon capture and utilization system,CCUS)与电制氢技术相结合,构建一个包含氢气生产、存储、利用的电转气(power to gas,P2G)模型。其次,挖掘电力、热力和天然气负荷需求资源的可调度价值,将其引入优化调度中辅以负荷侧调节。对该模型进行分析后,发现电制氢的多模式利用可有效降碳减排,引入阶梯式碳交易机制纳入总成本模型中用以灵活调度和交易碳配额。然后,以综合能源系统总运行成本最小为优化目标,建立综合能源系统低碳优化经济调度模型,基于Groubi对所提模型进行求解。最后,通过仿真对比分析各类情景下的优化结果,验证所提调度模型可以有效促进氢资源的合理利用、促进系统降碳减排、提升可再生能源的消纳率,具有较高的经济性与环保性。

To address the challenges related to limited consumption of renewable and clean energy,heightened carbon emissions,and low energy utilization efficiency within the integrated energy system,an operational scheme is devised to enhance the utilization of renewable energy and mitigate carbon emissions.Firstly,the program introduces an emerging technology portfolio of carbon capture and utilization system(CCUS)combined with electric hydrogen production technology to form an energy ladder and carbon cycle chain,and constructs a power to gas(P2G)model that includes hydrogen production,storage,and utilization to describe the multi-modal utilization mechanism of electric hydrogen production.Secondly,the schedulable value of electricity,heat and natural gas load demand resources can be exploited and introduced into optimal scheduling to complement load-side regulation.After the model was analyzed,it was found that the multi-modal use of electricity for hydrogen production was effective in reducing carbon emissions,and that the introduction of a stepped carbon trading mechanism was incorporated into the total cost model to allow for flexible scheduling and trading of carbon allowances.Then,with the optimization objective of declining the total operating cost of the integrated energy system,a low-carbon optimal economic dispatch model for the integrated energy system is established,and the proposed model is solved based on Groubi.Finally,the optimisation results under various scenarios are compared and analyzed through simulation,which verifies that the proposed scheduling model can effectively promote the rational use of hydrogen resources,promote the carbon reduction and emission reduction of the system,and enhance the consumption rate of renewable energy,with high economy and environmental friendliness.