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Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

Sensors (Basel, Switzerland), 2020-01, Vol.20 (2), p.411 [Peer Reviewed Journal]

2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;Attribution 3.0 Spain info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/es/ ;2020 by the authors. 2020 ;ISSN: 1424-8220 ;EISSN: 1424-8220 ;DOI: 10.3390/s20020411 ;PMID: 31940780

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Title:
Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors
Author: Riba, Jordi-Roger ; Gómez-Pau, Álvaro ; Moreno-Eguilaz, Manuel
Subjects: Aeronautics ; Aeronàutica ; Aircraft ; Alta tensió ; Altitude ; Arc tracking ; Breakdowns ; CMOS ; Convertidors ; Corona (Electricity) ; Corona effect ; Cosmic rays ; Descàrregues elèctriques ; Discharge ; Electric discharges ; Electrical measurement ; Electricitat ; Emission standards ; Energia elèctrica ; Energies ; Engines ; Enginyeria elèctrica ; High voltage ; High voltages ; Image converters ; Imaging sensor ; Imatges ; Instruments ; Leakage current ; Low cost ; Low pressure ; More electric aircraft ; Partial discharge ; Radiation ; Radio frequency interference ; Sensors ; Ultraviolet spectra ; Àrees temàtiques de la UPC
Is Part Of: Sensors (Basel, Switzerland), 2020-01, Vol.20 (2), p.411
Description: Visual corona tests have been broadly applied for identifying the critical corona points of diverse high-voltage devices, although other approaches based on partial discharge or radio interference voltage measurements are also widely applied to detect corona activity. Nevertheless, these two techniques must be applied in screened laboratories, which are scarce and expensive, require sophisticated instrumentation, and typically do not allow location of the discharge points. This paper describes the detection of the visual corona and location of the critical corona points of a sphere-plane gap configurations under different pressure conditions ranging from 100 to 20 kPa, covering the pressures typically found in aeronautic environments. The corona detection is made with a low-cost CMOS imaging sensor from both the visible and ultraviolet (UV) spectrum, which allows detection of the discharge points and their locations, thus significantly reducing the complexity and costs of the instrumentation required while preserving the sensitivity and accuracy of the measurements. The approach proposed in this paper can be applied in aerospace applications to prevent the arc tracking phenomenon, which can lead to catastrophic consequences since there is not a clear protection solution, due to the low levels of leakage current involved in the pre-arc phenomenon.
Publisher: Switzerland: MDPI AG
Language: English
Identifier: ISSN: 1424-8220
EISSN: 1424-8220
DOI: 10.3390/s20020411
PMID: 31940780
Source: Recercat
PubMed (Medline)
Geneva Foundation Free Medical Journals at publisher websites
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

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Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

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