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综合能源系统耦合性研究综述：定性分析与量化应用
Review of Coupling Characteristics in Integrated Energy System： Qualitative Analysis and Quantitative Applications
【目的】 “耦合”广泛存在于自然界，是综合能源系统（integrated energy system，IES）的基本物理属性与首要特征。明确IES耦合机理，能充分发挥其多能互补优势，挖掘其作为“虚拟储能”的新能源消纳潜力。目前IES耦合研究主要针对能量耦合形式定性分析，存在“不全面”“未量化”“难分析”等问题。 【方法】 文章围绕IES耦合性，从“定性”和“定量”两个维度，对IES耦合性进行了综述。首先，由广泛存在的耦合现象出发，提出了IES耦合的基本概念。其次，针对IES耦合对规划与运行的影响，梳理了异质能源耦合定性研究的现状。接着，针对IES耦合定性分析的局限，从指标与方法两个维度，总结了当前IES耦合的量化研究进展，并从时间、空间与能量品位三个维度展开，探讨了耦合量化应用的潜力。 【结果】 最后，围绕建模、机理、应用，阐述了IES耦合量化的未来研究挑战。 【结论】 异质能源耦合涉及多时间尺度分析、源网荷储协同、能量梯次利用等IES研究中的多个关键本质问题，明确耦合特性将有助于明晰IES运行的本质规律，有助于形成全新的理论成果与应用方法。
[Objective] "Coupling" exists widely in nature and is the fundamental physical attribute and primary characteristic of the integrated energy system （IES）. Clarifying the coupling mechanism of IES can fully leverage its multi-energy complementary advantages and tap into its potential as a "virtual energy storage" for new energy consumption. Current coupling research mainly focuses on qualitative analysis of energy coupling forms，which suffers from issues such as "incompleteness，" "unquantified，" and "difficult to analyze." [Methods] This paper reviews the analysis and application of IES coupling from both "qualitative" and "quantitative" dimensions. Firstly，starting from the widely existing coupling phenomena，the basic concept of IES coupling is proposed. Secondly，the current status of qualitative research on heterogeneous energy coupling in terms of its impact on planning and operation is sorted out. Then，in view of the limitations of qualitative analysis of IES coupling，the progress of current quantitative research on IES coupling is summarized from the dimensions of indicators and methods，and the potential of quantitative application of coupling is explored from the three dimensions of time，space and energy grade. [Results] Finally，the future research challenges of IES coupling quantification are expounded around modeling，mechanism and application. [Conclusions] Heterogeneous energy coupling involves multiple key essential issues in IES research，such as multi-time scale analysis，source-grid-load-storage coordination，and energy cascade utilization. Clarifying the coupling characteristics will help clarify the essential laws of IES operation and contribute to the formation of new theoretical achievements and application methods.
综合能源系统（IES） / 异质能源耦合 / 定性分析 / 量化应用 / 规划运行 / 机理分析
integrated energy system（IES） / heterogeneous energy coupling / qualitative analysis / quantitative application / planning and operation / mechanism analysis
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In response to the carbon reduction and emission reduction plan, and to improve the penetration of new energy while alleviating problems of abandonment of wind and light and pollution emissions in the traditional energy system, this paper introduces solar thermal power station combined with wind power, photovoltaic and other new energy production equipment, and establishes a master-slave game model of comprehensive energy system considering solar thermal power station. At the same time, the uncertainty of wind and solar output and the comprehensive demand response on the user side are considered. NSGA-Ⅱ nested intelligent solver is used to solve the model. The balance of interests among photothermal aggregators, multi-functional operators and users is analyzed, three different scenarios are studied and compared, and the feasibility of the model and the effectiveness of the method are verified through an example. The results show that the comprehensive energy system with CSP power station combined with the master-slave game method can effectively improve the energy consumption satisfaction of the user side and improve the economic benefits of the system.
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With the deepening of the construction of energy internet and integrated energy system， the coupling characteristics between different energy systems have been further deepened. In view of the fact that the influence of fault propagation in the integrated energy system have not been deeply analyzed at this stage， and the problem of fault linkage of different energy subsystems have not been taken into account， this paper puts forward the analysis method for cascade failure and fault chain reaction of integrated energy system. Firstly， taking integrated energy system as the research object， the fault chain failure mechanism of integrated energy system is analyzed from the macro level， and the fault effects of natural gas system， power system and heat system are analyzed in detail. Secondly， the evaluation index of chain fault reaction of integrated energy system is put forward from two dimensions of topological integrity and failure cascade loudness， and the analysis flow of chain fault influence is combed. Finally， the effectiveness and practicability of the proposed method are verified by a test example of an integrated energy system.
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The coordinated utilization of the resources of generation-grid-load-storage is an important means to promote the efficient operation of the regional integrated electric and heating system (RIEHS). This paper proposes an optimal dispatching method for RIEHS considering aggregation and transaction of generation-grid-load-storage. Firstly, the RIEHS dispatching framework is constructed, and the RIEHS dispatching organization process considering aggregation and transaction of generation-grid-load-storage is designed. Secondly, a two-stage optimization dispatching model of RIEHS is established. The first stage is the optimization of the aggregation and transaction of the resources of generation-grid-load-storage by the virtual power plant. The second stage is RIEHS dispatching optimization based on the transaction results of the resources of generation-grid-load-storage. Finally, based on the improved IEEE 33-node power distribution system and the 32-node Bali heating system, a RIEHS with three virtual power plants is constructed for simulation and analysis. The results show that the method proposed in the paper taps the response potential of user-side resources through transaction means, improves the operating income of virtual power plants and the economy of system operation. The effectiveness of the dispatching method has been verified. |
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