الفهرس 
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Abstract
With the rapid development of the economy, the coordinated development of energy utilization and environmental protection is facing enormous challenges. In the current construction of traditional energy systems, the planning, design, and operation of various energy systems tend to separate from each other. This leads to a weak coupling among different types of energy systems and decreases the overall security, self-healing ability, and effective utilization of the total energy. Against this background, a lot of countries turned their attention to the integrated energy system. In fact, integration in energy exploitation may save energy resources as much as possible for the next generations by optimal distribution of energy between various consumptions. An integrated energy system needs to be considered in various fields of management, planning, consumption, and optimization. In order to integrate, transfer, save, and convert energy, a system called Energy Hub (EH) is used which is applied to all carriers. This thesis provides a general framework for energy management of energy systems containing different energy carriers. The complete model of the system contains the conversion, storage, and transfer of various energy carriers. Many optimization problems for various energy carriers’ integration are introduced. To determine the optimal operation of the system, proposals for multi-energy carriers’ optimal dispatch and optimal power flow have been submitted. Also, novel techniques for optimum operation and configuration of multiple energy hubs are proposed. Some problems encountered in the operation of EHs are discussed, such as the effect of packet loss, the mismatch between generation and consumption energy, and uncertainties of renewable energy sources and demands. Also, a model predictive control technique for EHs has been presented. Models are presented in many examples, showing their basic characteristics and effectiveness.