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Audible noise and corona discharge from water droplets on superhydrophobic HVAC conductors
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Zhang, Xu, Cotton, Ian, Rowland, Simon, Li, Qi, Lian, Chengxing, Li, Wenyuan and Plaengpraphan, Chorphaka (2023) Audible noise and corona discharge from water droplets on superhydrophobic HVAC conductors. IEEE Transactions on Power Delivery, 38 (6). pp. 3771-3781. doi:10.1109/tpwrd.2023.3293869 ISSN 0885-8977.
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WRAP-audible-noise-corona-discharge-water-droplets-superhydrophobic-HVAC-conductors-Zhang-2023.pdf - Accepted Version - Requires a PDF viewer. Download (9Mb) | Preview |
Official URL: https://doi.org/10.1109/tpwrd.2023.3293869
Abstract
Audible noise from transmission lines is mainly generated by corona discharge from defects and water droplets on the conductors' surface. Applying a superhydrophobic coating to the conductors can reduce corona discharge, thereby reducing the level of audible noise produced. In this paper, corona discharge and noise measurements from an untreated conductor and a conductor coated with superhydrophobic coatings were carried out in AC electric fields and continuous water spray. The coated conductors show higher partial discharge inception voltages (PDIV) than uncoated ones. PD magnitude and PD per cycle of the coated conductors are lower compared with uncoated conductors, especially at electric fields above 14 kV/cm. A linear correlation between overall sound pressure and total PD magnitude is established. The behavior of corona discharges from single droplets with various sizes and positions and associated droplet vibration were investigated and the local electric field enhancement was analyzed by finite element analysis to examine the influence of droplet size and position on electric field distribution. Superhydrophobic coatings result in reduced PD magnitude and number and therefore reduce audible noise generated. This is attributed to small sessile droplets forming rather than large pendant droplets.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TD Environmental technology. Sanitary engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||
SWORD Depositor: | Library Publications Router | |||||||||
Library of Congress Subject Headings (LCSH): | Hydrophobic surfaces, Corona (Electricity), Overhead electric lines -- Noise, Electric conductors | |||||||||
Journal or Publication Title: | IEEE Transactions on Power Delivery | |||||||||
Publisher: | IEEE | |||||||||
ISSN: | 0885-8977 | |||||||||
Official Date: | December 2023 | |||||||||
Dates: |
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Volume: | 38 | |||||||||
Number: | 6 | |||||||||
Page Range: | pp. 3771-3781 | |||||||||
DOI: | 10.1109/tpwrd.2023.3293869 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Re-use Statement: | © 2023 Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Date of first compliant deposit: | 22 September 2023 | |||||||||
Date of first compliant Open Access: | 25 September 2023 | |||||||||
RIOXX Funder/Project Grant: |
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