源-储联动的综合能源系统协调与优化运行策略研究

A Coordinated and optimized operation strategy for comprehensive energy systems considering source storage linkage

综合能源系统(Integrated energy system,IES)在能源消纳和满足多元化能源需求的同时兼具低碳性和经济性的优点。为进一步提升综合能源系统消纳水平以及经济性,提出了考虑源-储联动综合能源系统协调优化运行策略。首先,将综合能源系统分为供给侧、转换侧和储存侧、用户侧,重点阐述源-储两侧组成单元的运行机理,并分析其在IES中发挥的作用。其次,将聚焦式光热(Concentrating solar power,CSP)电站引入能源供给侧,充分利用电耦合CSP电站能量时移特性维持供需平衡。利用储能侧双层电转气(Power to gas,P2G)系统提升综合能源系统消纳水平,并与单层氢储系统在可再生能源消纳效果上进行对比分析。最后,基于Matlab/simulink软件平台对所提优化协调运行策略有效性进行时域仿真验证。实验结果表明:所提优化协调策略可有效增强系统消纳水平,提升系统经济性,对解决弃风、弃光问题以及能源行业绿色低碳转型具有重要参考价值。

Integrated energy systems(IES)possess the advantages of carbon reduction and economic viability while addressing diverse energy demands and ensuring energy consumption.To further enhance the level of energy consumption and economy in IES,this paper proposes a coordinated optimization operation strategy considering the synergy between energy sources and energy storage units.Firstly,the IES is divided into the supply side,conversion and storage side,and user side,with a focus on elucidating the operational mechanisms of source and storage units and analyzing their roles in IES.Secondly,concentrating solar power(CSP)plants are introduced to the energy supply side,utilizing the temporal characteristics of energy transmission in electric-coupled CSP plants to maintain supply-demand balance.The energy storage side utilizes a two-layer power-to-gas(P2G)system to improve the level of energy consumption in the integrated energy system,and a comparative analysis is conducted with the single-layer hydrogen storage system in terms of renewable energy consumption effectiveness.Finally,the effectiveness of the proposed optimized coordination operation strategy is validated through time-domain simulations using the Matlab/Simulink software platform.Experimental results demonstrate that the proposed strategy effectively enhances the system's level of energy consumption,improves its economic feasibility,and provides valuable insights for addressing wind and solar curtailment issues and achieving green and low-carbon transformation in the energy industry.