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Sustainability of Electric Power Devices

A special issue of Sustainability (ISSN 2071-1050).

Deadline for manuscript submissions: closed (10 March 2021) | Viewed by 3801

Special Issue Editor


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Guest Editor
Department of High Voltage and Electrotechnical Materials, Faculty of Environmental Engineering and Energy, Institute of Electrical Power Engineering, Poznan University of Technology, 60-965 Poznan, Poland
Interests: high voltage; insulation materials; transformer; electric and magnetic fields; insulation oil; heat transfer; thermal properties; thermal conductivity
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Special Issue Information

Dear Colleagues,

The main aim of the Special Issue is the presentation of sustainability of electric power devices, such as power transformers, solar cells, wind farms, hydro powers, high-voltage cables and insulators, capacities, switchgears, and gas-insulated substations (GIS) and lines (GIL). All these aforementioned devices ensure proper and reliable operation of electric power systems, which have been exposed to turbulence and fluctuations caused by developing renewable sources of energy in recent years. The sustainability of electric power devices, presented in this Special Issue, should be understood as progress in the frame of the devices’ diagnostics, their design, and their impact on natural environment. Promising methods of the devices’ diagnostics are developing dynamically, which has a significant positive impact on their real technical lifetime. Progress of design means new solutions concerned with construction and advanced materials. New solutions of the construction are often aided by computer simulations, where electric, magnetic, and especially thermal fields are taken into account. Advanced materials, used in electric power devices, have been based on nanofillers in recent decades. There are many investigations around the worl, which are focused on reducing the negative impact of electric power devices on the natural environment. I hope that this Special Issue on “Sustainability of Electric Power Devices” will provide an opportunity to present the great progress achieved in the last few years in the frame of diagnostics, design, and impact of devices on the natural environment, all of which play an extremely important role in electric power systems.

Prof. Zbigniew Nadolny
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.

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Keywords

  • electric power devices
  • diagnostics
  • transformers
  • solar cells
  • wind farms
  • environment

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Published Papers (1 paper)

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Research

16 pages, 42572 KiB  
Article
A Nonlinear Finite-Element Analysis Tool to Prevent Rupture of Power Transformer Tank
by Samuel Brodeur, Van Ngan Lê and Henri Champliaud
Sustainability 2021, 13(3), 1048; https://doi.org/10.3390/su13031048 - 20 Jan 2021
Cited by 11 | Viewed by 3272
Abstract
High-energy internal failures of transformers are catastrophic events which are hardly predictable. For this reason, a full-scale controlled experiment represents a valuable learning opportunity to gather accurate information about sequence of events during the very short time in which the failure occurs. Controlled [...] Read more.
High-energy internal failures of transformers are catastrophic events which are hardly predictable. For this reason, a full-scale controlled experiment represents a valuable learning opportunity to gather accurate information about sequence of events during the very short time in which the failure occurs. Controlled parameters include tank design, material properties, experimental load and measurements. In this paper, we present a detailed investigation using nonlinear finite-element analysis of a 210-MVA transformer high-pressure experiment. We begin by evaluating the relationship between internal arcing pressure rise and tank expansion characteristics. Since this relationship is not linear due to geometric and material nonlinearities, an iterative process is proposed to ensure result accuracy. Stress–strain material properties are retrieved by tension experiments of specimens extracted from the tested tank to enable accurate comparison of numerical and experimental results. It is shown in this paper that nonlinear material parameters have a small influence on the tank pressure rise, but a significant one on large strain prediction and therefore the true stress-strain curve is recommended. In addition, the ductile rupture criterion based on the ultimate plastic strain of the material correlates with the experimental and explicit dynamic analysis results. This can ensure a certain design margin for tank rupture prevention. Full article
(This article belongs to the Special Issue Sustainability of Electric Power Devices)
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