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Hybrid Storage Technologies in Solar Energy Based Smart Cities

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (30 November 2020) | Viewed by 5648

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Dipartimento di Ingegneria Elettrica Elettronica e Informatica, Università degli Studi di Catania, st. A.Doria, n. 6, 95125 Catania, Italy
Interests: MATLAB simulation; renewable energy technologies; electrical power engineering; power electronics
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Special Issue Information

Dear Colleagues,

When looking at the roadmap to achieve the 2050 European energy and climate sustainability goals for renewable energy, the most recent trends of CO2 emissions and energy efficiency indicate that R&D efforts must combine electricity and heat at the global and local levels.

For this purpose, a multi-energy approach to energy generation and conversion is required to release the full potential of intermittent renewable energies.

In this context, certainly electrical and thermal energy storage plays a key role, as it allows not only to manage properly the mismatch between the daily and seasonal demand and the local thermal and electrical generation (mainly based on solar energy) profiles but also to enhance the limited programmability of the generation and variability of thermal and electrical load demands. Therefore, hybrid storage (i.e., storage of electricity and heat) is indispensable for creating flexibility, allowing to optimize the balance between supply and consumption profiles at the lowest cost.

The complexity and multidisciplinary characteristics of hybrid storage systems require research efforts to propose synergy and multidisciplinary investigations linking industrial engineering, material science, building physics, electrical engineering (e.g., smart grids).

Storage technologies (electrochemical, thermal, mechanical, etc.) have heterogeneous features and performances; therefore, it is essential to explore different technologies in order to develop a wide range of alternatives, for which a techno-economical assessment is also available.

The main goal of this Special Issue is to report an updated view of the research status about the integration, optimization, and operation of building energy systems that include hybrid storage technologies, optimize supply, storage, and demand of electricity and heat, and increase the self-consumption of local renewable energy.

The topics of interest in this Special Issue on hybrid energy storage systems (HESS) include (but are not restricted to):

  • HESS applications in stationary systems
  • HESS in microgrids
  • HESS in photovoltaic/thermal (PVT) systems
  • HESS structure/topology
  • HESS control
  • HESS modelling
  • HESS design based on field data
  • HESS efficiency improvement
  • HESS optimal sizing and optimal management
  • Short-term and long-term economic assessment of HESS
  • Life span assessment of HESS components
Prof. Dr. Giuseppe Marco Tina
Prof. Dr. Antonio Gagliano
Guest Editors

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Keywords

  • HESS applications in stationary systems HESS in microgrids HESS in photovoltaic/thermal (PVT) systems HESS structure/topology HESS control HESS modelling HESS design based on field data HESS efficiency improvement HESS optimal sizing and optimal management short-term and long-term economic assessment of HESS life span assessment of HESS components

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Published Papers (2 papers)

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Research

12 pages, 2815 KiB  
Article
Assessing the Dynamic Performance of Thermochemical Storage Materials
by Sara Walsh, Jack Reynolds, Bahaa Abbas, Rachel Woods, Justin Searle, Eifion Jewell and Jonathon Elvins
Energies 2020, 13(9), 2202; https://doi.org/10.3390/en13092202 - 2 May 2020
Cited by 5 | Viewed by 2549
Abstract
Thermochemical storage provides a volumetric and cost-efficient means of collecting energy from solar/waste heat in order to utilize it for space heating in another location. Equally important to the storage density, the dynamic thermal response dictates the power available which is critical to [...] Read more.
Thermochemical storage provides a volumetric and cost-efficient means of collecting energy from solar/waste heat in order to utilize it for space heating in another location. Equally important to the storage density, the dynamic thermal response dictates the power available which is critical to meet the varied demands of a practical space heating application. Using a laboratory scale reactor (127 cm3), an experimental study with salt in matrix (SIM) materials found that the reactor power response is primarily governed by the flow rate of moist air through the reactor and that creating salt with a higher salt fraction had minimal impact on the thermal response. The flowrate dictates the power profile of the reactor with an optimum value which balances moisture reactant delivery and reaction rate on the SIM. A mixed particle size produced the highest power (22 W) and peak thermal uplift (32 °C). A narrow particle range reduced the peak power and peak temperature as a result of lower packing densities of the SIM in the reactor. The scaled maximum power density which could be achieved is >150 kW/m3, but achieving this would require optimization of the solid–moist air interactions. Full article
(This article belongs to the Special Issue Hybrid Storage Technologies in Solar Energy Based Smart Cities)
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14 pages, 2518 KiB  
Article
Power Distribution Strategy of Microgrid Hybrid Energy Storage System Based on Improved Hierarchical Control
by Tiezhou Wu, Wenshan Yu, Lujun Wang, Linxin Guo and Zhiquan Tang
Energies 2019, 12(18), 3498; https://doi.org/10.3390/en12183498 - 11 Sep 2019
Cited by 11 | Viewed by 2574
Abstract
Traditional hierarchical control of the microgrid does not consider the energy storage status of a distributed hybrid energy storage system. This leads to the inconsistency of the remaining capacity of the energy storage system in the process of system operation, which is not [...] Read more.
Traditional hierarchical control of the microgrid does not consider the energy storage status of a distributed hybrid energy storage system. This leads to the inconsistency of the remaining capacity of the energy storage system in the process of system operation, which is not conducive to the safe and stable operation of the system. In this paper, an improved hierarchical control strategy is proposed: the first allocation layer completes the allocation between the distribution energy storage systems considering the state of hybrid energy storage systems, and the second allocation layer realizes the allocation within the hybrid energy storage systems based on variable time constant low-pass filtering. Considering the extreme conditions of energy storage systems, the transfer current is introduced in the second allocation process. The SOC (stage of charge) of the supercapacitor is between 40% and 60%, which ensures that the supercapacitor has enough margin to respond to the power demand. An example of a 300 MW photovoltaic microgrid system in a certain area is analyzed. Compared with the traditional hierarchical control, the proposed control strategy can reduce the SOC change of a hybrid energy storage system by 9% under the same conditions, and make the supercapacitor active after power stabilization, which is helpful to the stable operation of the microgrid. Full article
(This article belongs to the Special Issue Hybrid Storage Technologies in Solar Energy Based Smart Cities)
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