Hierarchical management for integrated community energy systems
Hierarchical management for integrated community energy systems
复制标题
社区综合能源系统分级管理
DOI：
10.1016/j.apenergy.2015.08.134
复制
发表时间：
2015-12
期刊：
影响因子：
11.2
通讯作者：
Li Kang
中科院分区：
文献类型：
--
作者：
Xu Xi;ong;Jin Xiaolong;Jia Hongjie;Yu Xiaodan;Li Kang
由于热电联产电厂（CHP）和恒温控制负荷的存在，社区地区的热力、天然气和电力系统紧密耦合。然而，这些系统之间的协调，特别是与可再生能源的整合，尚未得到充分的研究。本文旨在为综合社区能源系统（ICES）开发一种分层方法。提出的分层框架为日前调度和两层小时内调整系统。两个目标，即运行成本最小化和联络线功率平滑，被纳入框架。在小时内调整中，设计了主客户结构。采用两种不同时间尺度的方法协调热电联产和恒温控制负荷，以执行计划并处理负荷需求和可再生能源发电的不确定性。为了获得热电联产的最优设定点，提出了一种综合考虑三相潮流和天然气潮流约束的最优潮流方法。在此基础上，提出了一种基于时间优先列表法的三相需求响应方法，实现了不同阶段、不同位置的热控负荷调度。数值计算结果表明，该系统能够实现经济运行，并能有效地平滑系统与外部能源网络之间的配线功率。
Due to the presence of combined heat and power plants (CHP) and thermostatically control loads, heat, natural gas, and electric power systems are tightly coupled in community areas. However, the coordination among these systems has not yet been fully researched, especially with the integration of renewable energy. This paper aims to develop a hierarchical approach for an integrated community energy system (ICES). The proposed hierarchical framework is presented as day-ahead scheduling and two-layer intra-hour adjustment systems. Two objectives, namely the operating cost minimization and tie-line power smoothing, are integrated into the framework. In the intra-hour adjustment, a master–client structure is designed. The CHP and thermostatically controlled loads are coordinated by a method with two different time scales in order to execute the schedule and handle uncertainties from the load demand and the renewable generation. To obtain the optimal set-points for the CHP, an integrated optimal power flow method is developed, which also incorporates three-phase electric power flow and natural gas flow constraints. Furthermore, based on a time priority list method, a three-phase demand response approach is proposed to dispatch thermostatically controlled loads at different phases and locations. Numerical studies confirm that the ICES can be economically operated, and the tie-line power between the ICES and external energy network can be effectively smoothed.
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