Energy management of islanded microgrid by coordinated application of thermal and electrical energy storage systems,International Journal of Energy Research

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Energy management of islanded microgrid by coordinated application of thermal and electrical energy storage systems
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-11-09 , DOI: 10.1002/er.6160
Mehrdad Bagheri‐Sanjareh ₁ , Mohammad Hassan Nazari ₂ , Seyed Hossein Hosseinian ₂

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The installation of an energy storage system (ESS) is vital for the Micrgorid (MG) islanded operation to ensure the maintenance of demand–supply balance. Lithium‐ion batteries (LIBs) are among the most commonly used ESS technologies for grid‐based applications, which is used in this paper to constantly maintain the demand–supply balance in a residential MG. For this purpose, a novel frequency‐based energy management scheme is proposed. It uses an LIB ESS to handle the primary frequency control and energy management during peak‐load period, while the dispatchable distributed generators like microturbine and fuel cell supply the base load. The air‐conditioning TCLs consume a significant part of the residential load profile, especially during mid‐summer. Unlike TCLs that instantaneously use their generated cooling thermal energy to control indoor temperatures, the thermal energy storage systems (TESSs) can also store the thermal energy and use it later. In this paper, the TESSs are used instead of TCLs to reduce the power consumption of a residential Microgrid (MG) in islanded mode. By doing this, the required LIBESSs capacity is decreased 70% considerably than the case the TCLs are used for controlling the indoor temperatures. Also, replacing the ACs and EHPs with TESSs results in a 63.7% reduction in the total cost of electrical and thermal storage.

中文翻译：

通过热电存储系统的协同应用对孤岛微电网进行能源管理

储能系统（ESS）的安装对于Micrgorid（MG）孤岛式运营至关重要，以确保维持供需平衡。锂离子电池（LIB）是基于网格的应用中最常用的ESS技术，本文将其用于不断保持住宅MG的供需平衡。为此，提出了一种新颖的基于频率的能量管理方案。它使用LIB ESS来处理峰值负载期间的主频率控制和能量管理，而可调度的分布式发电机（如微型涡轮机和燃料电池）则提供基本负载。空调TCL消耗了住宅负荷曲线的很大一部分，尤其是在仲夏期间。与TCL立即使用其产生的冷却热能来控制室内温度的TCL不同，热能存储系统（TESS）也可以存储热能并在以后使用。在本文中，使用TESS代替TCL来减少孤岛模式下住宅微电网（MG）的功耗。这样，与使用TCL来控制室内温度的情况相比，所需的LIBESS容量大大降低了70％。同样，用TESS代替AC和EHP可以使总的电和热存储成本降低63.7％。与使用TCL控制室内温度的情况相比，所需的LIBESS容量大大降低了70％。同样，用TESS代替AC和EHP可以使总的电和热存储成本降低63.7％。与使用TCL控制室内温度的情况相比，所需的LIBESS容量大大降低了70％。同样，用TESS代替AC和EHP可以使总的电和热存储成本降低63.7％。

更新日期：2020-11-09

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