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Energies
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Voltage Stability Analysis in Power Systems II
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Voltage Stability Analysis in Power Systems II

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

Deadline for manuscript submissions: 10 May 2024 | Viewed by 2458

Special Issue Editor

Prof. Dr. Cristina González-Morán

E-Mail Website
Guest Editor
Electrical Engineering Department, University of Oviedo.Campus de Gijón, 33204 Gijón, Asturias, Spain
Interests: power systems analysis; power generation; microgrids optimization; renewable energy technologies; distributed generation; frequency and voltage control in power sysems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Voltage control and its associated stability problems have always received special attention in power systems operation and analysis. Proper voltage controls are requested to guarantee safety, quality, and stability in transmission and distribution of electricity. Voltage control might also be used to improve economic performance.    

Traditionally, the main reason for voltage control has been load variation. However, near-future power systems will be related to higher degrees of complexity due to the recent advances in distributed generators, renewable energy sources, and highly dynamic loads. Distributed generators have translated voltage control and stability issues from transmission to distributed systems. The increasing penetration of distributed generation gives the opportunity to widely develop more active distribution networks and more advanced distribution management strategies that have triggered the contribution of distribution systems to voltage stability.

Even in transmission systems, the growing influence of great renewable generators, such as offshore wind plants, has changed the paradigm of power system voltage stability with their intermittent and stochastic nature.

This Special Issue focuses on relevant research to assure voltage stability in new scenarios for future power systems.

Prof. Dr. Cristina González-Morán
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

  • power system stability
  • voltage stability
  • voltage control
  • voltage collapse
  • distributed generation
  • reactive power control
  • FACTS controllers

Published Papers (2 papers)

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Research

24 pages, 4860 KiB  
Article
Enhanced Density Peak-Based Power Grid Reactive Voltage Partitioning
by Xingye Deng, Canwei Liu, Hualiang Liu, Lei Chen, Yuyan Guo and Heding Zhen
Energies 2023, 16(17), 6125; https://doi.org/10.3390/en16176125 - 22 Aug 2023
Viewed by 936
Abstract
Clustering-based reactive voltage partitioning is successful in reducing grid cascading faults, by using clustering methods to categorize different power-consuming entities in the power grid into distinct regions. In reality, each power-consuming entity has different electrical characteristics. Additionally, due to the irregular and uneven [...] Read more.
Clustering-based reactive voltage partitioning is successful in reducing grid cascading faults, by using clustering methods to categorize different power-consuming entities in the power grid into distinct regions. In reality, each power-consuming entity has different electrical characteristics. Additionally, due to the irregular and uneven distribution of the population, the distribution of electricity consumption is also irregular and uneven. However, the existing method neglects the electrical difference among each entity and the irregular and uneven density distribution of electricity consumption, resulting in poor accuracy and adaptability of these methods. To address these problems, an enhanced density peak model-based power grid reactive voltage partitioning method is proposed in this paper, called EDPVP. First, the power grid is modeled as a weighted reactive network to consider entity electrical differences. Second, the novel local density and density following distance are designed to enhance the density peak model to address the problem that the traditional density peak model cannot adapt to weighted networks. Finally, the enhanced density peak model is further equipped with an optimized cluster centers selection strategy and an updated remaining node assignment strategy, to better identify irregular and uneven density distribution of electricity consumption, and to achieve fast and accurate reactive voltage partition. Experiments on two real power grids demonstrate the effectiveness of the EDPVP. Full article
(This article belongs to the Special Issue Voltage Stability Analysis in Power Systems II)
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23 pages, 1030 KiB  
Article
Efficient Integration of Fixed-Step Capacitor Banks and D-STATCOMs in Radial and Meshed Distribution Networks Considering Daily Operation Curves
by Oscar Danilo Montoya, Walter Gil-González and Jesus C. Hernández
Energies 2023, 16(8), 3532; https://doi.org/10.3390/en16083532 - 19 Apr 2023
Cited by 9 | Viewed by 1015
Abstract
The problem regarding the optimal integration of efficient reactive power compensation in radial and meshed distribution networks using fixed-step capacitor banks and distribution static compensators (D-STATCOMs) is addressed in this research paper by proposing a master–slave optimization methodology. Radial and meshed distribution topologies [...] Read more.
The problem regarding the optimal integration of efficient reactive power compensation in radial and meshed distribution networks using fixed-step capacitor banks and distribution static compensators (D-STATCOMs) is addressed in this research paper by proposing a master–slave optimization methodology. Radial and meshed distribution topologies are considered for the grid structure while including variable active and reactive demand curves. An economic analysis is performed, considering the net present value of the optimization plan, as well as the costs of energy losses and the capacitor banks’ acquisition, installation, and operation. In the case of the D-STATCOMs, an annualized costs analysis is presented. In the master stage, the discrete version of the generalized normal distribution optimization (GNDO) algorithm selects the nodes and the sizes of the capacitor banks. In the slave stage, the successive approximations power flow approach is implemented. Numerical results in the IEEE 33-bus grid (with both radial and meshed topologies) and the IEEE 85-bus grid (with a radial configuration) demonstrated the proposed master–slave optimization’s effectiveness in minimizing the project’s expected net present value for a planning period of five years. Moreover, a simulation in the IEEE 69-bus grid under peak operation conditions showed that the GNDO approach is an excellent optimization technique to solve the studied problem when compared to combinatorial and exact optimization methods. In addition, numerical validations considering D-STATCOMs in the IEEE 85-bus grid confirmed the effectiveness and robustness of the GNDO approach in addressing problems associated with optimal reactive power compensation in medium-voltage distribution systems. Full article
(This article belongs to the Special Issue Voltage Stability Analysis in Power Systems II)
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