Integrated energy systems (IESs), in which various energy flows are interconnected and coordinated to release potential flexibility for more efficient and secure operation, have drawn increasing attention in recent years. In this article, an integrated energy management system (IEMS) that performs online analysis and optimization on coupling energy flows in an IES is comprehensively introduced. From the theory perspective, an energy circuit method (ECM) that models natural gas networks and heating networks in the frequency domain is discussed. This method extends the electric circuit modeling of power systems to IESs and enables the IEMS to manage large-scale IESs. From the implementation perspective, the architecture design and function development of the IEMS are presented. Tutorial examples with illustrative case studies are provided to demonstrate its functions of dynamic state estimation, energy flow analysis, security assessment and control, and optimal energy flow. From the application perspective, real-world engineering demonstrations that apply IEMSs in managing building-, park-, and city-scale IESs are reported. The economic and environmental benefits obtained in these demonstration projects indicate that the IEMS has broad application prospects for a low/zero-carbon future energy system.

中文翻译：

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基于能量回路的综合能源管理系统：理论、实现与应用

近年来，综合能源系统 (IES) 引起了越来越多的关注，在该系统中，各种能源流相互关联和协调，以释放潜在的灵活性，以实现更高效、更安全的运行。在本文中，综合能源管理系统 (IEMS) 对 IES 中的耦合能量流进行在线分析和优化进行了全面介绍。从理论的角度，讨论了在频域中模拟天然气网络和供热网络的能量电路方法 (ECM)。这种方法将电力系统的电路建模扩展到 IES，并使 IEMS 能够管理大型 IES。从实现的角度，介绍了IEMS的架构设计和功能开发。提供了带有说明性案例研究的教程示例，以演示其动态状态估计、能量流分析、安全评估和控制以及最佳能量流的功能。从应用的角度来看，报告了应用 IEMS 管理建筑物、公园和城市规模的 IES 的实际工程演示。这些示范项目取得的经济和环境效益表明，IEMS在低/零碳未来能源系统方面具有广阔的应用前景。