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Design, Analysis and Operation of Renewable Energy Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A: Sustainable Energy".

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 723

Special Issue Editors


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Guest Editor
Department of Sustainable Energy Development, Faculty of Energy and Fuels, AGH University of Krakow, 30-059 Krakow, Poland
Interests: hydogen energy storage; solar energy; photovoltaic; wind turbines

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Guest Editor
Department of Industrial Engineering, University of Naples Federico II, 80125 Naples, Italy
Interests: thermal solar; photovoltaic and photovoltaic-thermal; dynamic simulations of energy systems; renewable polygeneration systems; district heating and cooling; sustainable mobility; optimization techniques; geothermal energy; biofuels; synthetic fuels; fuel cells; hydrogen storage systems; Power-to-X
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Special Issue Information

Dear Colleagues,

As the world grapples with the adverse impacts of climate change, driven primarily by fossil fuel consumption, there is an urgent need to transition to cleaner and more sustainable energy sources. Renewable energy systems, encompassing solar, wind, hydro and bioenergy, offer a viable solution to reduce greenhouse gas emissions and mitigate environmental degradation. Furthermore, with the global population and industrial activities on the rise, the demand for energy continues to surge, necessitating innovative approaches to ensure a reliable and sustainable energy supply. This Special Issue aims to address these critical concerns by showcasing cutting-edge research, technological advancements and practical solutions that enhance the efficiency, reliability and integration of renewable energy systems, thereby contributing to a sustainable energy future.

This Special Issue focuses on advancements and innovations in the field of renewable energy. It covers a broad spectrum of topics related to the design, analysis and operational aspects of renewable energy systems, providing insights into the latest research, technologies and methodologies aimed at enhancing the efficiency, reliability and sustainability of these systems.

Research areas may include (but are not limited to) the following:

  • Novel design strategies for integrating renewable energy sources such as solar, wind, hydro and biomass energy into existing energy grids.
  • Architectural advancements in renewable energy systems to improve energy capture, storage and distribution.
  • Performance analysis and optimization of renewable energy systems.
  • Analytical methods and computational models to assess the performance and optimize the operation of renewable energy systems.
  • Case studies demonstrating successful applications of optimization techniques in real-world scenarios.
  • Strategies to address operational challenges, including the intermittency, variability and reliability of renewable energy sources.
  • The development of hybrid systems that combine multiple renewable sources to achieve higher efficiency and stability.
  • Sustainability and environmental impacts.
  • Policy and economic considerations.
  • Predictions and emerging trends in renewable energy technologies and their potential impact on the global energy landscape.
  • The exploration of future research directions and innovative concepts to further advance the field of renewable energy.

We look forward to receiving your contributions.

Dr. Maciej Żołądek
Dr. Luca Cimmino
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • renewable energy systems
  • hybrid energy systems
  • energy storage
  • wind turbine
  • photovoltaics
  • polygeneration
  • hydrogen energy storage
  • energy policy

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Published Papers (1 paper)

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Research

24 pages, 7979 KiB  
Article
Modeling and Simulation on the Hybrid Solution of Static Var Generator and Synchronous Condenser for Unlocking Power Output Limitation of Wind Farms Integrated into Weak Grid
by Haiyang Liang, Yanbin Zhang, Shuran Liu, Jianling Wu, Jifeng Fan, Yi Zhang, Junjie Yu, Tianlong Zhang and Ziyi Zhu
Energies 2025, 18(3), 471; https://doi.org/10.3390/en18030471 - 21 Jan 2025
Viewed by 427
Abstract
The issues of low inertia, overvoltage, and wide-frequency oscillations in high-proportion renewable energy systems have become prominent, posing major challenges to renewable energy integration and threatening grid stability. Currently, many wind-rich areas ensure grid safety and stability by reducing wind farm output. To [...] Read more.
The issues of low inertia, overvoltage, and wide-frequency oscillations in high-proportion renewable energy systems have become prominent, posing major challenges to renewable energy integration and threatening grid stability. Currently, many wind-rich areas ensure grid safety and stability by reducing wind farm output. To enhance the active power delivery capability of wind farms, this paper proposes a hybrid solution of a small synchronous condenser (SC) and static var generator (SVG) within wind farm stations to optimize reactive power and voltage at the point of grid connection. First, it was analyzed that the low short-circuit ratio (SCR) is a key factor affecting the stable operation of wind farms, and the sub-transient reactance of the SC can increase the SCR. Based on this, a method for configuring the capacity of the SC was developed. Next, simulation models for both the SC and the SVG were established, and their reactive power compensation capabilities were verified. The hybrid control approach combined the advantages of both devices, providing comprehensive voltage support across sub-transient, transient, and steady-state conditions for renewable energy stations. Furthermore, based on a practical 50.5 MW wind farm, which has been operating with a power delivery consistently limited to 60% of its capacity, a simulation model and scenarios were set up. A comparison of the simulation results shows that, with only the SVG in operation, the wind farm is prone to oscillations after a grid fault. However, after adopting the hybrid control of the SC and SVG, the wind farm operates stably. Therefore, installing a small SC within wind farms can effectively address the limitations of voltage stability and a low short-circuit ratio, thereby supporting higher levels of renewable energy integration. Full article
(This article belongs to the Special Issue Design, Analysis and Operation of Renewable Energy Systems)
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