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Energies
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Control and Protection of Hybrid AC/DC Transmission Systems
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Control and Protection of Hybrid AC/DC Transmission Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".

Deadline for manuscript submissions: closed (25 October 2023) | Viewed by 4614

Special Issue Editor

Dr. Sohrab Mirsaeidi

E-Mail Website
Guest Editor
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Interests: control and protection of large-scale hybrid AC/DC grids and microgrids; application of power electronics in power systems; deployment of artificial intelligence in power system analysis

Special Issue Information

Dear Colleagues,

HVDC transmission systems have increasingly been used in modern power transmission networks due to their numerous advantages, such as providing higher power transmission capacity over long distances and interconnecting asynchronous systems. With the increasing deployment of DC transmission in existing AC networks, the possibility of AC and DC circuits running parallel to each other and sharing the same right-of-way or even the same tower is becoming increasingly likely, and hence hybrid AC/DC power grids are rapidly developing. The characteristics of hybrid AC/DC grids and conventional AC grids are different in various aspects. The non-complex controllability of HVDC systems provides a new choice for the control of hybrid AC/DC power grids. However, currently, the HVDC control systems are not fully involved in the power flow and stability of hybrid power grids. In addition, the use of power electronic devices with limited thermal overload capability in HVDC technology reduces the overload capability of HVDC converters. This significantly influences the fault current level of the whole network. While the number of AC/DC interconnections gradually increases in the hybrid grids, the mutual influence between AC and DC systems becomes more pronounced. Therefore, hybrid AC/DC grids encounter new control and protection challenges. This Special Issue is dedicated to identifying, addressing, and disseminating state-of-the-art research works in the field of hybrid AC/DC transmission systems. Topics of interest for this Special Issue include, but are not limited to:

  • Methodologies for planning and operating hybrid AC/DC grids
  • Modelling and analysis of electromechanical dynamics in hybrid AC/DC grids
  • Co-simulation and hardware-in-the-loop simulations as tools for the validation, testing, and verification of hybrid AC/DC grids
  • Methods for monitoring and control of the dynamic and transient stability of hybrid grids
  • Innovations on the protection of hybrid grids including AC and DC fault ride-through techniques
  • Novel approaches for commutation failure and cascading fault inhibition in hybrid AC/DC grids, including LCCs
  • Design, control, and protection of power converter technologies (LCC, VSC, and MMC)
  • Advances in power apparatus enabling development and enhanced features in hybrid AC/DC grids, such as DC transformers and DC circuit breakers
  • Advanced synchronization schemes for enhancing dynamics response and stability
  • New techniques for blackout restoration in the context of hybrid AC/DC grids

Dr. Sohrab Mirsaeidi
Guest Editor

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

  • hybrid AC/DC grids
  • transmission systems
  • power system control
  • power system protection

Published Papers (2 papers)

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14 pages, 4391 KiB  
Article
A Modified Particle Swarm Optimization Algorithm for Power Sharing and Transient Response Improvement of a Grid-Tied Solar PV Based A.C. Microgrid
by Ghulam Abbas, Aqeel Ahmed Bhutto, Touqeer Ahmed Jumani, Sohrab Mirsaeidi, Mohsin Ali Tunio, Hammad Alnuman and Ahmed Alshahir
Energies 2023, 16(1), 348; https://doi.org/10.3390/en16010348 - 28 Dec 2022
Cited by 8 | Viewed by 1740
Abstract
The increasing penetration of Distributed Generators (D.G.) into the existing power system has brought some real challenges regarding the transient response of electrical systems. The injection of D.G.s and abrupt load changes may cause massive power, current, and voltage overshoots/undershoots, which consequently affects [...] Read more.
The increasing penetration of Distributed Generators (D.G.) into the existing power system has brought some real challenges regarding the transient response of electrical systems. The injection of D.G.s and abrupt load changes may cause massive power, current, and voltage overshoots/undershoots, which consequently affects the equilibrium of the existing power system and deteriorate the performance of the connected electrical appliances. A robust and intelligent control strategy is of utmost importance to cope with these issues and enhance the penetration level of D.G.s into the existing power system. This paper presents a Modified Particle Swarm Optimization (MPSO) algorithm-based intelligent controller for attaining a desired power-sharing ratio between the M.G. and the main grid with an optimal transient response in a grid-tied Microgrid (M.G.) system. The proposed MPSO algorithm includes an additional parameter named best neighbor particles (rbest) in the velocity updating equation to convey additional information to every individual particle about all its neighbor particles, consequently leading to the increased exploration capability of the algorithm. The MPSO algorithm optimizes P.I. parameters for transient and steady-state response improvement of the studied M.G. system. The main dynamic response evaluation parameters are the overshoot and settling time for active and reactive power during the D.G. connection and load change. Furthermore, the performance of the proposed controller is compared with the PI-PSO-based MG controller, which validates the effectiveness of the proposed M.G. control scheme in maintaining the required active and reactive power under different operating conditions with minimum possible overshoot and settling time. Full article
(This article belongs to the Special Issue Control and Protection of Hybrid AC/DC Transmission Systems)
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Review

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31 pages, 6125 KiB  
Review
Techno-Economic and Environmental Perspectives of Solar Cell Technologies: A Comprehensive Review
by Shoaib Nazir, Asjad Ali, Abdullah Aftab, Hafiz Abdul Muqeet, Sohrab Mirsaeidi and Jian-Min Zhang
Energies 2023, 16(13), 4959; https://doi.org/10.3390/en16134959 - 26 Jun 2023
Cited by 6 | Viewed by 2469
Abstract
This paper provides a review of the implementation of different materials and how they have impacted the efficiency of solar cells. This work elaborates on all solar generation methods that have been developed in the past and covers disparate technologies that are being [...] Read more.
This paper provides a review of the implementation of different materials and how they have impacted the efficiency of solar cells. This work elaborates on all solar generation methods that have been developed in the past and covers disparate technologies that are being implemented in different generations. A review of the characterization and factors involved in these processes are also discussed briefly. Furthermore, the economic, environmental, and technical perspectives related to solar cells have also been expounded. This paper also provides some insights into potential research directions that can be pursued in the field of solar energy. Energy demands are increasing all over the world, and substantial amounts of fossil fuels are currently exhausted all over the world in order to meet those needs, which in turn contaminates our environment; moreover, non-renewable sources of energy are diminishing at higher rates as well. Solar energy is of prime importance in all renewable energy sources as the Sun shines at the Earth for 8 to 10 h on average. Thus, heat can be harnessed to generate electricity, but solar cells are not substantially efficient because the materials used in them are quite costly and waste a considerable amount of energy, mostly as heat, which subsequently reduces the efficiency of the cell and increases the overall price as well. These challenges can be dealt with by designing more efficient, economical systems of storage and manufacturing PV cells with high efficacy. Scientists and engineers are more inclined toward advanced technologies and material manipulation to enhance the efficiency of solar energy and reduce its cost. In this regard, substantial research is being carried out, especially on the structure of materials and advanced materials like nanomaterials and quantum dots. Due to their distinct electromechanical and material properties, carbon-based nanomaterials like carbon nanotubes, graphene, fullerene, and nanohybrids are being employed as the electrodes, transport layers, active layers, or intermediate (interfacial) layers of solar cells in this regard. Full article
(This article belongs to the Special Issue Control and Protection of Hybrid AC/DC Transmission Systems)
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