Integrated Modeling and Optimization of Multi-Carrier Energy Systems
Integrated Modeling and Optimization of Multi-Carrier Energy Systems
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DOI：
10.3929/ethz-a-005377890
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发表时间：
2007
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影响因子：
--
通讯作者：
M. Geidl
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文献类型：
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作者：
M. Geidl
过去，电力和天然气系统等公共能源基础设施大多是独立规划和运营的。受不同原因的驱动，最近的一些出版物提出了包括多个能量载体的能量系统的集成视图，而不是专注于单个能量载体。其中一个激励因素是燃气分布式发电（尤其是热电联供和三联供）的利用率越来越高。不同载波之间的能量转换建立了导致系统交互的对应功率流的耦合。这种现象的调查，需要开发的工具，多个能量载体系统，这已成为一个最近的研究领域的综合分析。本文提出了一种通用的含多能源载体的能源系统稳态建模和优化框架。一般系统模型包括各种能量载体的转换、存储和传输。不同基础设施之间的耦合基于“能量枢纽”的概念被明确地考虑。利用该模型，定义了各种集成优化问题。为了确定系统的最优运行，发展了多载波优化调度和最优潮流方法。本文导出了多能源车优化调度的一般最优性条件，并与电力网络的标准方法相一致。除了运行优化，提出了两种方法的多载体能源系统的结构优化，使能源基础设施的最佳耦合估计。模型在一些应用实例中进行了演示，展示了它们的基本特性和实用性。
In the past, common energy infrastructuressuch as electricity and nat¬ ural gas Systems were mostly planned and operated independently. Mo-tivated by different reasons, a number of recent publications suggests an integrated view of energy Systems including multiple energy carriers, instead of focusing on a Single energy carrier. One incentive for that is given by the increasing utilization of gas-fired distributed generation, especially co- and trigeneration. The conversion of energy between dif¬ ferent carriers establishes a coupling of the corresponding power flows resulting in system interactions. The investigation of such phenomena requires the development of tools for an integrated analysis of multiple energy carrier Systems, which has become a recent field of research. This thesis presents a generic frameworkfor steady-state modeling and optimization of energy Systems including multiple energy carriers. The general system model includes conversion, storage, and transmission of various energy carriers. The couplings between the different infrastruc¬ tures are explicitly taken into account based on the concept of "energy hubs". Using this model, various integrated optimization problems are defined. For determining the optimal system Operation, multi-carrier optimal dispatch and optimal power flow approaches are developed. A general optimality condition for optimal dispatch of multiple energy car¬ riers is derived and cornpared with the Standard approach for electric¬ ity networks. Besides operational optimization, two approaches for the structural optimization of multi-carrier energy Systems are presented, which enable to estimate the optimal coupling of energy infrastructures. The modeis are demonstrated in a number of application examples, showing their basic characteristics and usefulness.