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Power Transmission and Distribution Equipment and Systems: 2nd Edition

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

Deadline for manuscript submissions: 25 February 2025 | Viewed by 543

Special Issue Editors


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Guest Editor
Department of Engineering, School of Digital, Technology, Innovation & Business, Staffordshire University, Stoke-on-Trent ST4 2DE, UK
Interests: power quality; power distribution system; energy modeling; electrical power systems; smart grid; power conversion; load modeling
Special Issues, Collections and Topics in MDPI journals
Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 12616 Tallinn, Estonia
Interests: condition monitoring; electrical machines; mathematical modeling; predictive maintenance; signal processing; digital twin; Internet of Things; parameters estimation; inverse problem theory; artificial intelligence
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Modern power systems are evolving at a great pace in order to tackle challenges related to the efficient integration of distributed electricity generation, electric vehicles, and zero-energy buildings. Sophisticated control algorithms, as well as information communication technology, are required to support this transformation. Furthermore, high-voltage direct current (HVDC) transmission lines are being used to transport energy at longer distances. The increasing penetration of distributed electricity generation presents several issues that may impact the performances of distribution networks. These issues can limit the hosting capacity and may increase power quality problems. Moreover, new loads such as electric vehicles and battery storage systems provide an opportunity for the more flexible operation of the distribution network.

This Special Issue will provide valuable inputs for advanced research topics related to modern electric power systems, with a prime focus on transmission and distribution systems. The main topics of interest for this Special Issue include but are not limited to the following:

  • Impact of distributed generation of the capacity of distribution and transmission systems;
  • Advancement in DC grid modeling, protection, control, and stability;
  • AC/DC hybrid transmission systems;
  • Issues of isolated microgrids;
  • Impact of large-scale distributed electricity generation on hosting capacity;
  • Current harmonic emission in the distribution network;
  • Current and voltage harmonic interdependency;
  • Current harmonic sensitivity;
  • Impact of nonlinear loads on the current harmonic emission in the distribution network;
  • High order (supraharmonics) emissions;
  • Information and communication technology for smart grids.

Dr. Muhammad Naveed Iqbal
Dr. Bilal Asad
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

  • transmission network
  • distribution network
  • power quality
  • hosting capacity
  • electric energy storage systems
  • current and voltage harmonic interdependency
  • load modeling
  • operation and control
  • smart grids
  • power system stability
  • ancillary services

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Published Papers (1 paper)

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Research

16 pages, 6782 KiB  
Article
Linear Quadratic Regulator-Based Coordinated Voltage and Power Control for Flexible Distribution Networks
by Zhipeng Jing, Lipo Gao, Chengao Wu and Dong Liang
Energies 2025, 18(2), 361; https://doi.org/10.3390/en18020361 - 16 Jan 2025
Viewed by 347
Abstract
Multi-port soft open points (SOPs) are effective devices for alleviating issues such as voltage violation and transformer overloading in distribution networks caused by the high penetration of distributed energy resources. This paper proposes a coordinated voltage and power control method for flexible distribution [...] Read more.
Multi-port soft open points (SOPs) are effective devices for alleviating issues such as voltage violation and transformer overloading in distribution networks caused by the high penetration of distributed energy resources. This paper proposes a coordinated voltage and power control method for flexible distribution networks based on a linear quadratic regulator (LQR). First, the principle of coordinated voltage and power control is analyzed based on SOPs’ control strategies and a linear power flow model. Then, a discrete-time state-space model is constructed for flexible distribution networks with multi-port SOPs, using the voltage magnitude deviations at the AC side of all PQ-controlled voltage source converters (VSCs) and the loading rate deviations of the transformers corresponding to all PQ-controlled VSCs as state variables. An LQR-based optimal control model is then established, aiming to simultaneously minimize deviations of voltage magnitudes and transformer loading rates from their reference values, which correspond to the Vdc-controlled VSC. The optimal state feedback law is obtained by solving the discrete-time algebraic Riccati equation. The proposed method has been evaluated on two typical flexible distribution networks, and the simulation results demonstrate the effectiveness of the proposed control method in improving voltage profiles and alleviating transformer overloading conditions using local measurements and very limited communication. In specific situations, the imbalance of voltages and transformer loading rates among the interconnected feeders can be reduced by 40%. Full article
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