Decision letter for "A review on control strategies for microgrids with distributed energy resources, energy storage systems, and electric vehicles"

Innumerable methods of generating, delivering and consuming electricity has become very prominent in the recent days due to the emergence of the distributed energy resources that are comprised of renewable energy sources and the energy storage systems. The prevailing energy storage systems for the distributed energy resources has its own challenges that are related to the methods of storage, the cost of the storage and their functioning. So the paper puts forward a novel energy accumulator that is supported by a rotating magnetic core as storage for the distributed energy resources. The proposed method brings down the operational, technical and financial complexities in storage of the distributed energy resources.

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A Case Study on Distributed Energy Resources and Energy-Storage Systems in a Virtual Power Plant Concept: Economic Aspects

Energies ◽

10.3390/en12234447 ◽

2019 ◽

Vol 12 (23) ◽

pp. 4447 ◽

Cited By ~ 14

Author(s):

Tomasz Sikorski ◽

Michał Jasiński ◽

Edyta Ropuszyńska-Surma ◽

Magdalena Węglarz ◽

Dominika Kaczorowska ◽

...

Keyword(s):

Energy Storage ◽

Power Plant ◽

Economic Efficiency ◽

Storage Systems ◽

Energy Resources ◽

Distributed Energy Resources ◽

Virtual Power ◽

Distributed Energy ◽

Energy Storage Systems ◽

Virtual Power Plant

This paper analyzes the technical and economic possibilities of integrating distributed energy resources (DERs) and energy-storage systems (ESSs) into a virtual power plant (VPP) and operating them as a single power plant. The purpose of the study is to assess the economic efficiency of the VPP model, which is influenced by several factors such as energy price and energy production. Ten scenarios for the VPP were prepared on the basis of the installed capacities of a hydropower plant (HPP), rooftop solar photovoltaic (PV), and energy-storage system (ESS), as well as weather conditions, in Poland. On the basis of technical conditions, it was assumed that the maximum power capacity of the ESS equaled 1.5 MW. The economic efficiency analysis presented in this paper demonstrated that, in seven years, the VPP will achieve a positive value of the net present value (NPV) for a scenario with 0.5 MW battery storage and rainy summers. Furthermore, sensitivity analysis was conducted on price factors and DER production volume. The price variable had a major impact on the NPV value for all scenarios. The scenario with a 0.5 MW battery and typical summers was highly sensitive to all factors, and its sensitivity decreased as the ESS capacity grew from 0.5 to 1.5 MW.

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Evaluation of Commercial Building Clusters With Energy Storage to Reduce Reliance on Electrical Utility Grids

10.1115/detc2021-67313 ◽

2021 ◽

Author(s):

Gregory Kaminski ◽

Philip Odonkor

Keyword(s):

Energy Storage ◽

Storage Systems ◽

Storage System ◽

Energy Resource ◽

Energy Resources ◽

Distributed Energy Resources ◽

Commercial Building ◽

Distributed Energy ◽

Distributed Resources ◽

And Storage

Abstract The decreasing cost of implementation and increasing regulatory incentive to lower energy use have led to an increased adoption of distributed energy resources in recent years. This increased adoption has been further fueled by a surge in energy consciousness and the expansion of energy-saving products and technologies. To lower reliance on the electrical grid and fully realize the benefits of distributed energy resources, many consumers have also elected to use battery systems to store generated energy. For owners of multiple buildings, or multiple owners willing to share the operational cost, building clusters may be formed to more effectively take advantage of these distributed resources and storage systems. The implementation of these systems in existing buildings introduces the question of what makes a “good” building cluster. Furthermore, the scalable nature of distributed energy sources and storage systems create countless possibilities for system configuration. Through comparison of unique two-building clusters from a stock of five buildings with a given distributed energy resource (in this case, a solar photovoltaic panel array) and energy storage system, we develop a fundamental understanding of the underlying factors that allow building clusters to be less reliant on the utility grid and make better use of energy generation and storage systems.

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