Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.5
3.2
Journals
Energies
Special Issues
Selected Papers from 22nd International Symposium on High Voltage Engineering...
energies-logo
Submit to Energies Review for Energies Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Selected Papers from 22nd International Symposium on High Voltage Engineering (ISH 2021)

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F6: High Voltage".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 10434

Special Issue Editors

Prof. Dr. Wenfeng Liu

E-Mail Website
Guest Editor
College of Electrical Engineering, Xi'an Jiao Tong University, Xi’an 710049, China
Interests: insulation; dielectric
Dr. Lu Cheng

E-Mail Website
Guest Editor
College of Electrical Engineering, Xi'an Jiao Tong University, Xi’an 710049, China
Interests: high voltage; power equipment

Special Issue Information

Dear Colleagues,

International Symposium on High Voltage Engineering (ISH) is one of the most influential international conferences with large scale and high academic level in the field of high voltage and insulation technology. ISH was first held in Munich, Germany (1972). ISH 2021 will be organized on September 25-29, 2021 via offline or online conference, by Xi'an Jiaotong University, State Key Laboratory of Electrical Insulation and Power Equipment, China Electrotechnical Society, Engineering Dielectrics Technical Committee, China Society for Electrical Engineering, Chinese National Committee of CIGRE, High Voltage Technical Committee and The International Council on Large Electric Systems.

The scope of ISH 2021 includes: (1) Electromagnetic fields: computation, measurements, environmental effects. (2) Transient voltages: lightning, switching, repetitive impulses, surge arresters, insulation coordination, over-voltage protection, EMC. (3) High voltage and high current testing techniques: test procedures, measurements, evaluation, partial discharges, space charges, dielectric characteristics, emerging test techniques. (4) Advanced materials and insulation systems: outdoor, indoor, solid, liquid andgas insulated, nanodielectric, eco-friendly and other new materials, novel insulation system. (5) Monitoring and diagnostics: intelligent sensing, big data, artificial intelligence, asset management, live-line working, maintenance and repair, safety considerations. (6) HVDC technologies and systems: design problems, testing and measuring techniques, advanced HVDC systems. (7) High voltage engineering problems in future power grids: distribution generations, smartening of power networks, and integration of renewable energies. (8) Industrial applications of high voltage: non-energy applications in different fields. (9) Other related issues.

Prof. Dr. Wenfeng Liu
Dr. Lu Cheng
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

  • high voltage
  • insulation
  • electromagnetic fields
  • monitoring

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

10 pages, 2053 KiB  
Article
Transient Response Characteristics of Metal Oxide Arrester under High-Altitude Electromagnetic Pulse
by Feng Qin, Wei Chen, Xutong Wang, Tao Huang, Zhitong Cui and Xin Nie
Energies 2022, 15(9), 3303; https://doi.org/10.3390/en15093303 - 30 Apr 2022
Cited by 5 | Viewed by 1423
Abstract
In order to study the strong electromagnetic pulse effect of critically vulnerable equipment in power systems and evaluate the survivability under high-altitude electromagnetic pulses, it is necessary to study the characteristics of the transient response of metal oxide arresters to the high-altitude electromagnetic [...] Read more.
In order to study the strong electromagnetic pulse effect of critically vulnerable equipment in power systems and evaluate the survivability under high-altitude electromagnetic pulses, it is necessary to study the characteristics of the transient response of metal oxide arresters to the high-altitude electromagnetic pulse by experiment. In this paper, an experimental platform for high-altitude electromagnetic pulse conduction current injection for a typical 10 kV metal oxide arrester was set up, and the key parameters such as peak value of overshoot voltage, peak value of residual voltage, action voltage and response time were obtained by the experiment. The results show that: the action voltage of this type of metal oxide arrester is 3.53 times higher than that of its rated voltage; the peak value of overshoot voltage is 2.19 times that of the peak value of residual voltage under lightning impulse current; the peak value of residual voltage is 1.57 times that under lightning impulse; and the response time varies little with the electromagnetic pulse conduction current amplitude, averaging 46.86 nanoseconds under a high-altitude electromagnetic pulse conduction environment. Full article
(This article belongs to the Special Issue Selected Papers from 22nd International Symposium on High Voltage Engineering (ISH 2021))
►▼ Show Figures

Figure 1

13 pages, 2882 KiB  
Article
Effects of Pre-Crosslinking on Space Charge and Breakdown Characteristics of XLPE Cable Insulation
by Zhenpeng Zhang, You Wu, Chao Fu, Shaoxin Meng, Chao Peng, Zhonglei Li and Boxue Du
Energies 2022, 15(7), 2360; https://0-doi-org.brum.beds.ac.uk/10.3390/en15072360 - 24 Mar 2022
Cited by 8 | Viewed by 1748
Abstract
This study focused on the effect of pre-crosslinking on the electrical properties of XLPE insulation for HVDC cables. The XLPE samples were pre-crosslinked at 140, 150 and 160 °C. The space charge and DC breakdown characteristics of the XLPE samples with and without [...] Read more.
This study focused on the effect of pre-crosslinking on the electrical properties of XLPE insulation for HVDC cables. The XLPE samples were pre-crosslinked at 140, 150 and 160 °C. The space charge and DC breakdown characteristics of the XLPE samples with and without pre-crosslinking were investigated. The results show that the pre-crosslinked XLPE samples have an obvious space charge injection and transportation, resulting in more severe electric field distortion. Under the electric field of 100 kV/mm, the electric field distortion rates of the XLPE samples pre-crosslinked at 150 and 160 °C reached 51% and 72% respectively, which were much higher than that of the XLPE sample without pre-crosslinking (14%.) Compared with the XLPE without pre-crosslinking, the breakdown strengths of XLPE pre-crosslinked at 140, 150 and 160 °C were reduced by 11%, 6% and 7% respectively, at the temperature of 50 °C. It is concluded that the pre-crosslinking leads to imperfect crystallization and micro-defects in the amorphous region of XLPE, thereby leading to more space charge accumulation and reduced DC breakdown. The pre-crosslinking of XLPE insulation therefore should be prevented during HVDC cable manufacturing. Full article
(This article belongs to the Special Issue Selected Papers from 22nd International Symposium on High Voltage Engineering (ISH 2021))
►▼ Show Figures

Figure 1

19 pages, 10786 KiB  
Article
Grid-like Vibration Measurements on Power Transformer Tank during Open-Circuit and Short-Circuit Tests
by Karlo Petrović, Antonio Petošić and Tomislav Župan
Energies 2022, 15(2), 492; https://0-doi-org.brum.beds.ac.uk/10.3390/en15020492 - 11 Jan 2022
Cited by 4 | Viewed by 2169
Abstract
In this work, the vibrations on the surfaces of the tank wall, stiffeners, and the cover of a 5 MVA transformer experimental model were measured during open-circuit and short-circuit transformer tests. Vibration measurements of a transformer tank side were conducted at discrete points [...] Read more.
In this work, the vibrations on the surfaces of the tank wall, stiffeners, and the cover of a 5 MVA transformer experimental model were measured during open-circuit and short-circuit transformer tests. Vibration measurements of a transformer tank side were conducted at discrete points using two different voltage sources in no-load test. Using interpolation functions, the RMS values of acceleration and vibration velocity are visualized and compared for each considered measurement configuration (no-load and load tests and two different excitation sources). Significant differences in mode shapes and amplitudes of vibrations at different frequencies are observed. The maximum RMS values of acceleration, velocity and displacement in the open-circuit test are 0.36 m/s2, 0.31 mm/s, and 0.42 µm, respectively. The maximum values in short-circuit test are 0.74 m/s2, 1.14 mm/s, and 1.8 µm, respectively. In the short-circuit test, the frequency component of 100 Hz is dominant. In the open-circuit test, the first few 100 Hz harmonics are significant (100 Hz, 200 Hz, and 300 Hz). In addition to the visualization of RMS values during the open-circuit and short-circuit tests, animations of the vibrations are created. Fourier analysis and phase comparison between frequency components are also used to show vibration animations at dominant frequencies in the spectrum (100 Hz harmonics). The visualization of the vibrations at the tank wall surfaces is transferred into 3D space in such a way that all 15 surfaces are mapped to the spatial coordinates of the surfaces so that a 3D model of the acceleration, vibration velocity, and displacement of the transformer tank is shown. Full article
(This article belongs to the Special Issue Selected Papers from 22nd International Symposium on High Voltage Engineering (ISH 2021))
►▼ Show Figures

Graphical abstract

13 pages, 3220 KiB  
Article
Partial Discharge Simulation of Air Gap Defects in Oil-Paper Insulation Paperboard of Converter Transformer under Different Ratios of AC–DC Combined Voltage
by Bing Luo, Jian Wang, Dong Dai, Lei Jia, Licheng Li and Tingting Wang
Energies 2021, 14(21), 6995; https://0-doi-org.brum.beds.ac.uk/10.3390/en14216995 - 25 Oct 2021
Cited by 7 | Viewed by 1804
Abstract
A converter transformer is important primary equipment in a DC transmission project. The voltage on the valve side winding is complex when the equipment is running, including DC, AC, and AC–DC combined voltage. The insulation structure of the valve side winding of a [...] Read more.
A converter transformer is important primary equipment in a DC transmission project. The voltage on the valve side winding is complex when the equipment is running, including DC, AC, and AC–DC combined voltage. The insulation structure of the valve side winding of a converter transformer is an oil-paper insulation structure, which may have a variety of defects in the manufacturing stage and daily use, resulting in partial discharge. Therefore, it is the key to studying the partial discharge characteristics and mechanism of oil-paper insulation under AC–DC combined voltage. In this paper, we build a two-dimensional air gap model of oil-paper-insulated pressboard considering the actual particles and actual reaction based on the fluid model. The characteristics and evolution mechanism of partial discharge (PD) in pressboard under different AC/DC combined voltages are studied by numerical simulation. The results show that when the DC component increases, the polarity effect of partial discharge is more obvious, while the potential and discharge intensity in the air gap decrease. Further analysis revealed that the DC component in the combined voltage accumulated a large number of surface charges on the surface of the air gap, and the space charge distribution was more uniform and dispersed, which generated an electric field with opposite polarity to the DC component in the air gap and, then, inhibited the development of local discharge in the paperboard. The results of the simulation are consistent with the previous experimental phenomena, and the mechanism analysis of the simulation results also verifies the previous analysis on the mechanism of experimental phenomena. This will lay a theoretical foundation for the further study of partial discharge phenomenon of oil-paper insulation structures in practical operation in the future. Full article
(This article belongs to the Special Issue Selected Papers from 22nd International Symposium on High Voltage Engineering (ISH 2021))
►▼ Show Figures

Figure 1

11 pages, 3594 KiB  
Article
Arc Ablation Resistance and Dielectric Strength Properties of PTFE/BN Composites
by Xianping Zhao, Yongjie Nie, Tengfei Zhao, Ke Wang, Bingchen Song, Shihu Yu and Shengtao Li
Energies 2021, 14(20), 6705; https://0-doi-org.brum.beds.ac.uk/10.3390/en14206705 - 15 Oct 2021
Viewed by 1255
Abstract
The substantial improvements in transmission voltage, which have been adopted to meet fast-growing energy demands, require more reliable power equipment and higher-quality insulating materials. The polytetrafluoroethylene (PTFE) nozzle, as the key part of a high-voltage circuit breaker, is often subjected to arc ablation [...] Read more.
The substantial improvements in transmission voltage, which have been adopted to meet fast-growing energy demands, require more reliable power equipment and higher-quality insulating materials. The polytetrafluoroethylene (PTFE) nozzle, as the key part of a high-voltage circuit breaker, is often subjected to arc ablation and breakdown phenomena. Thus, it is very urgent to develop nozzles with better performance. In this study, PTFE/boron nitride (BN) composites were prepared. The relationships among the BN filler loading, thermal transition properties, spectral reflectance properties, arc ablation resistance, and AC dielectric breakdown performances, as well as their corresponding mechanisms, were studied. Experimental results show that the thermal conductivity and thermal diffusivity of PTFE/BN composites increased monotonously with BN loading, and that both parameters were improved by 41% and 44%, respectively, for 11 wt % composites compared with pure PTFE. Moreover, PTFE/BN composites had higher light reflectance in the wavelength range from 320 to 2500 nm. The PTFE/BN composites presented better arc ablation resistance performance with increased BN loading, which was improved by 88.5%. It is thought that the increased thermal conductivity, thermal diffusivity, the strong light reflectance, and surface sediment after arc ablation contribute to the improvement in arc ablation resistance performance. The AC breakdown strength of PTFE/BN composites was enhanced by 30.93%, attributed to the good heat dissipation properties introduced by the BN fillers. Thus, filling BN into the PTFE matrix would be helpful to solve the equipment issue that comes from the improvement in transmission voltage. Full article
(This article belongs to the Special Issue Selected Papers from 22nd International Symposium on High Voltage Engineering (ISH 2021))
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop