Symmetry in High Voltage and Insulation Technology

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 3773

Special Issue Editors


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Guest Editor
School of Electrical Engineering, Shandong University, Jinan 250002, China
Interests: high-frequency electromagnetic transient; applied electromagnetics; plasma discharge simulation; high-voltage power equipment monitorin

E-Mail Website
Guest Editor
School of Electrical Engineering, Shandong University, Jinan 250002, China
Interests: engineering electromagnetic field; high frequency transformer; iron core material
School of Electrical Engineering, Shandong University, Jinan 250002, China
Interests: gas and liquid discharges; plasma diagnostic techniques; biomedical application of plasma

Special Issue Information

Dear Colleagues,

The subject of high voltage and insulation technology aims to provide technical support for the safe and economic operation of power systems in the design of high-performance environmentally friendly insulation materials, state perception of power equipment, and overvoltage suppression.

Nowadays, under the complex background of UHV transmission construction, deep integration of cyber-physical systems, large-scale grid connection of renewable energy, and harsh electromagnetic operating environment of power equipment, high-voltage disciplines are facing unprecedented challenges.

The corresponding key research areas include, but are not limited to, dielectric insulation properties under extreme conditions or multi-physics, new material sensing technology, multi-information smart device monitoring, high-voltage and high-power DC breaking technology, non-linear behavior mechanisms of discharge plasma, and sub-nanosecond and nanosecond pulse discharge mechanisms. A very important investigation strategy is seeking the symmetry in between the modelling description and the experimental verification for fundamental theories in these areas in order to achieve comprehensive understanding.

This planned issue of Symmetry aims to encourage scholars to carry out research on high voltage and insulation technology in the above context and to submit their research reports in this interesting field, thereby showing the great significance of new ideas. Papers that employ the symmetry or asymmetry concept in their methodologies in the fields of High Voltage and Insulation Technology are welcomed. We also welcome scholars in related fields to contribute their latest research results to this Special Issue.

Prof. Dr. Li Zhang
Prof. Dr. Liang Zou
Dr. Ying Sun
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. Symmetry is an international peer-reviewed open access monthly 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 2400 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

  • Environmentally friendly insulation materials
  • Dielectric insulation
  • Pulse power and discharge plasma
  • Overvoltage suppression
  • High-voltage power equipment
  • Electromagnetic compatibility
  • Plasma diagnostic techniques
  • Interaction between plasma dielectric materials

Published Papers (2 papers)

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Research

15 pages, 5559 KiB  
Article
Trap Parameters Optimization Based on Metal Particle Dynamic Simulation Method
by An Ping, Jian Wang, Ruofan Xiao, Renying Liu, Yanan Chang and Qingmin Li
Symmetry 2022, 14(6), 1187; https://doi.org/10.3390/sym14061187 - 9 Jun 2022
Cited by 2 | Viewed by 1318
Abstract
Insulation failure usually occurs in AC gas-insulated transmission (AC GIL) in field operation, in which the primary cause is the charged motion of metal particles in the electric filed. At present, the particle inhibition method applied is to design particle traps on the [...] Read more.
Insulation failure usually occurs in AC gas-insulated transmission (AC GIL) in field operation, in which the primary cause is the charged motion of metal particles in the electric filed. At present, the particle inhibition method applied is to design particle traps on the inner wall of the GIL shell. However, due to the large randomness of the charged motion for metallic particles and the limitations of field test methods, a particle trap has not yet been designed from the perspective of particle trapping effectiveness. In this paper, firstly, referring to the size of a running 252 kV AC GIL, a 1:1 scaled 3-D similarity simulation model is established to obtain the dynamic characteristics of particles with different sizes under the operating voltage level. This model can form symmetry between the real equipment, and its simulated simulation trajectory can achieve symmetry with the actual one. Secondly, an experimental platform that can easily capture the motion of the particles is set up to experimentally verify the symmetry between the field operating equipment and the simulation model. Finally, the particle traps are set on both sides of the concave and convex surface of the basin insulator, and an optimization scheme for the design of the particle trap is proposed from three aspects: the electric field regulation of the trap, the captured probability of particles, and the trap location. The proposed research shows that, with respect to the motion characteristics of the particles, this paper selects circular hole-shaped trap and its thickness, slot spacing, and slot width are 10 mm, 6 mm, and 8 mm, respectively. When the traps are arranged, one at the bottom of the shell at 70 mm and 80 mm from each side of the concave and convex insulator, the capture probability of the traps on both sides can be as high as 78% and 70%, respectively. Therefore, the analysis and optimization method in this paper has important reference value according to similarity concepts for optimizing particle traps in AC GIL at a certain voltage level. Full article
(This article belongs to the Special Issue Symmetry in High Voltage and Insulation Technology)
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12 pages, 5964 KiB  
Article
A Vibration Similarity Model of Converter Transformers and Its Verification Method
by Hao Wang, Li Zhang, Youliang Sun, Guan Wang and Liang Zou
Symmetry 2022, 14(1), 143; https://doi.org/10.3390/sym14010143 - 12 Jan 2022
Cited by 1 | Viewed by 1215
Abstract
According to the vibration characteristics of converter transformers, considering the Maxwell equation, magnetostrictive effect, Lorentz force and structural mechanics, the similarity criterion suitable for converter transformers is deduced in this paper. Using the finite element simulation platform, the multi physical field coupling model [...] Read more.
According to the vibration characteristics of converter transformers, considering the Maxwell equation, magnetostrictive effect, Lorentz force and structural mechanics, the similarity criterion suitable for converter transformers is deduced in this paper. Using the finite element simulation platform, the multi physical field coupling model of converter transformers is constructed, and the scale coefficient is 0.1. The magnetic flux density distribution, stress distribution, shape variable and vibration characteristics of the model before and after the similarity are analyzed. The results show that the variation law of the model before and after the similarity conforms to the similarity criterion, and the correctness of the similarity criterion is verified. The converter transformer vibration similarity model and its verification method can effectively reduce the unnecessary waste of resources before the preparation of converter transformers and have important reference value for the analysis and improvement of converter transformer vibration characteristics. Full article
(This article belongs to the Special Issue Symmetry in High Voltage and Insulation Technology)
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