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Symmetry
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Navigating New Horizons: Symmetry and Advances in the Integration and...
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Navigating New Horizons: Symmetry and Advances in the Integration and Active Support of Large-Scale Renewable Energy

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 466

Special Issue Editors

Dr. Wenyang Deng

E-Mail Website
Guest Editor
School of Automation, Guangdong University of Technology, Guangzhou 510640, China
Interests: renewable energy; integration; power electronics; power flow optimization
Prof. Dr. Sizhe Chen

E-Mail Website
Guest Editor
School of Automation, Guangdong University of Technology, Guangzhou 510640, China
Interests: renewable energy; energy storage; power electronics
Dr. Li Liu

E-Mail Website
Guest Editor
School of Electrical Engineering, Guangxi University, Nanning 530004, China
Interests: power electronic digital twins; power quality; renewable energy integration; transportation electrification
Dr. Huangqing Xiao

E-Mail Website
Guest Editor
School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Interests: renewable power integration; DC transmission and distribution system; DC circuit breaker
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Developing renewable energy technologies such as wind and photovoltaic energy is crucial for achieving flexible and efficient energy production and reducing the impact of fossil fuels. However, fluctuations in renewable energy and our dependence on power electronic devices have complicated the integration of the grid, bringing challenges to planning, control, transmission, and economic operation. The concepts of symmetry and asymmetry are deeply rooted in these challenges, as they play a fundamental role in the design, control, and optimization of renewable energy systems. For example, the symmetrical characteristics of power electronic devices and grid structures can enhance system stability and efficiency, while asymmetry often introduces complex problems that require advanced control algorithms and design techniques.

This Special Issue aims to explore how symmetry and asymmetry features affect the generation, grid integration, and optimization of renewable energy. We encourage submissions of papers on the role of power electronic topologies in efficient power regulation and how symmetry can be used to develop economic incentives and market operations. We also welcome papers on the impact of asymmetric conditions on system stability and how these impacts can be mitigated. By combining these concepts with engineering applications, this Special Issue aims to provide valuable insights into optimizing renewable energy systems and enhancing their integration with the grid. Comprehensive reviews that thoroughly explore the interaction between symmetry and renewable energy technologies are also encouraged.

Dr. Wenyang Deng
Prof. Dr. Sizhe Chen
Dr. Li Liu
Dr. Huangqing Xiao
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. Symmetry is an international peer-reviewed open access monthly 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 2400 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
  • integration
  • power electronics
  • wind
  • PV
  • power flow optimization
  • power market

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Published Papers (2 papers)

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Research

20 pages, 2423 KiB  
Article
Symmetry-Guided Prototype Alignment and Entropy Consistency for Multi-Source Pedestrian ReID in Power Grids: A Domain Adaptation Framework
by Jia He, Lei Zhang, Xiaofeng Zhang, Tong Xu, Kejun Wang, Pengsheng Li and Xia Liu
Symmetry 2025, 17(5), 672; https://doi.org/10.3390/sym17050672 (registering DOI) - 28 Apr 2025
Viewed by 28
Abstract
This study proposes a multi-source unsupervised domain adaptation framework for person re-identification (ReID), addressing cross-domain feature discrepancies and label scarcity in electric power field operations. Inspired by symmetry principles in feature space optimization, the framework integrates (1) a Reverse Attention-based Feature Fusion (RAFF) [...] Read more.
This study proposes a multi-source unsupervised domain adaptation framework for person re-identification (ReID), addressing cross-domain feature discrepancies and label scarcity in electric power field operations. Inspired by symmetry principles in feature space optimization, the framework integrates (1) a Reverse Attention-based Feature Fusion (RAFF) module aligning cross-domain features using symmetry-guided prototype interactions that enforce bidirectional style-invariant representations and (2) a Self-Correcting Pseudo-Label Loss (SCPL) dynamically adjusting confidence thresholds using entropy symmetry constraints to balance source-target domain knowledge transfer. Experiments demonstrate 92.1% rank-1 accuracy on power industry benchmarks, outperforming DDAG and MTL by 9.5%, with validation confirming robustness in operational deployments. The symmetric design principles significantly enhance model adaptability to inherent symmetry breaking caused by heterogeneous power grid environments. Full article
(This article belongs to the Special Issue Navigating New Horizons: Symmetry and Advances in the Integration and Active Support of Large-Scale Renewable Energy)
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13 pages, 3767 KiB  
Article
One-Cycle Control with Composite Function Embedded for Boost Converters
by Lei Wang, Lidan Chen, Wei Ma and Jubao Li
Symmetry 2025, 17(4), 559; https://doi.org/10.3390/sym17040559 - 7 Apr 2025
Viewed by 137
Abstract
It has been confirmed that a larger stability domain has more advantages for system operation. In this paper, a novel one-cycle control (OCC) embedded with a composite function is proposed. Its control principle is based on maintaining the symmetry of the volt-second value [...] Read more.
It has been confirmed that a larger stability domain has more advantages for system operation. In this paper, a novel one-cycle control (OCC) embedded with a composite function is proposed. Its control principle is based on maintaining the symmetry of the volt-second value for the inductor in each cycle. Then, selecting the reference voltage as the study variable, the stability boundaries and identify stable parameter domains are studied by establishing a state-space average model. The results demonstrate that, compared with the conventional OCC, the proposed OCC with composite function u embedded achieves an expanded stable parameter domain, effectively delaying the occurrence of instability phenomena from uref=2uin to uref=3uin. Both the simulation and experimental results conclusively validate the theoretical analysis, confirming the effectiveness and superiority of the proposed control strategy. Full article
(This article belongs to the Special Issue Navigating New Horizons: Symmetry and Advances in the Integration and Active Support of Large-Scale Renewable Energy)
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