The energy crisis and increasing concerns about the environment in modern society have fostered the development of the integrated energy system (IES) in smart grid. The energy hub (EH) is a minimum construction of the IES. The chief purpose of this paper is to propose a Lyapunov optimization-based energy management strategy for the energy hub with an energy router. First, this paper describes a configuration of the EH with an energy router and sets the basic operating principles of the energy router. Second, a method is proposed to analyze the energy balance equations of the EH. Furthermore, the problem of energy management is formulated considering the constraints of energy balance equations, energy storage, flexible loads, and other constraints of operation. Finally, energy storage and flexible electric loads are modeled as stochastic processes, and three virtual queues are constructed to relax these constraints. The Lyapunov drift-plus-penalty function is applied to formulate a relaxed form of the energy management problem. Case studies of a single EH and two-connected EHs are performed to test the effectiveness of the proposed strategy, and the results are compared with a greedy algorithm.

中文翻译：

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基于Lyapunov优化的带能量路由器的能源枢纽能源管理策略

能源危机和现代社会对环境日益增长的关注促进了智能电网中综合能源系统（IES）的发展。能源枢纽（EH）是IES的最低要求。本文的主要目的是为带有能源路由器的能源枢纽提出一种基于Lyapunov优化的能源管理策略。首先，本文介绍了带有能量路由器的EH的配置，并设置了能量路由器的基本操作原理。其次，提出了一种分析EH能量平衡方程的方法。此外，考虑到能量平衡方程式，能量存储，柔性负载以及其他操作约束条件来制定能量管理问题。最后，将能量存储和灵活的电力负载建模为随机过程，并构造了三个虚拟队列以放松这些约束。应用李雅普诺夫漂移加罚函数来表达能量管理问题的松弛形式。对单个EH和两个连接的EH进行了案例研究，以测试所提出策略的有效性，并将结果与​​贪婪算法进行比较。