Control of Power Systems II

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Electrical, Electronics and Communications Engineering".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 773

Special Issue Editor

Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia
Interests: electric machines; control theory and applications; power systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the past decade, we have witnessed intensive development and changes in the field of electric power systems. The changes are visible at all three of the following levels: in electricity generation, in transmission, and consumption. They are related to increasing the shares of renewable sources in production and electric vehicles through consumption, lowering prices, and increasing the capacity of electronic components and batteries, as well as the implementation of information technology in power system operations. Some of the consequences of the new situation are the changes in and the introduction of additional control systems in power systems. The changes are inevitable due to the altered modes of operation of the power systems, reaching novel and strict requirements for transmission system operators, open transmission access, environmental constraints, and increased competitiveness.

The changes and introduction of additional control systems can influence the characteristics of the power system, reduce its damping, and can lead to an instability of the power system. The consequences of elevated stability problems are observed clearly in the increasing number of significant power system blackouts in recent years.

It is, therefore, crucial that those involved in working in the field of power system control have enough state-of-the-art knowledge, and that they have access to the experiences gained by engineers in other power systems. This is also the purpose of this Special Issue—that engineers and academics who have reported new knowledge and findings while working in the field of power system control also transfer them to others. The area of interest for this Special Issue is vast. We expect contributions from the fields of the modeling, analysis, simulations, control, and optimization of both individual components and entire power systems.

Dr. Jožef Ritonja
Guest Editor

Manuscript Submission Information

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Published Papers (1 paper)

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14 pages, 7724 KiB  
Effect of Multiple Reclosing Time Intervals on Axial Vibration of Winding
Appl. Sci. 2023, 13(21), 11910; - 31 Oct 2023
Viewed by 483
When a transformer suffers a permanent fault, it will suffer a short-circuit impulse again after reclosing. If the previous vibration of the winding is not attenuated completely and the winding is subjected to a secondary impulse within a short time, the secondary vibration [...] Read more.
When a transformer suffers a permanent fault, it will suffer a short-circuit impulse again after reclosing. If the previous vibration of the winding is not attenuated completely and the winding is subjected to a secondary impulse within a short time, the secondary vibration response will have a superposition. The aim of this study was to analyze the effect of the anti-short-circuit ability of operational transformers subjected to a secondary short-circuit current impulse. In this paper, a model is established for calculating axial vibration in transformer windings and effects on the vibration response of windings under different closing phase angles and short-circuit intervals are analyzed. The results show that the vibration acceleration of windings is a V-shaped variation at phase angles from 0° to 180°, reaching the maximum values at 0° and 180° and reaching the minimum value at 90°. When the transformer recloses on a permanent short circuit, due to the superposition effect, the vibration acceleration amplitude of the secondary impulse will be greater than that of the primary impulse, but as the reclosing interval increases, the superposition effect decreases continuously. When the interval is 600 ms, the superposition effect for the vibration acceleration of the secondary impulse attenuates to 83.3%. The superposition effect is not significant after 600 ms. The research provides a theoretical reference for transformer closing-control strategies. Full article
(This article belongs to the Special Issue Control of Power Systems II)
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