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Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance

Noncontact voltage measurement has the advantages of simple handling, high construction safety, and not being affected by line insulation. However, in practical measurement of noncontact voltage, sensor gain is affected by wire diameter, wire insulation material, and relative position deviation. At...

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Autores principales: Suo, Chunguang, Huang, Rujin, Zhou, Guoqiong, Zhang, Wenbin, Wang, Yanyun, He, Mingxing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10142282/
https://www.ncbi.nlm.nih.gov/pubmed/37112192
http://dx.doi.org/10.3390/s23083851
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author Suo, Chunguang
Huang, Rujin
Zhou, Guoqiong
Zhang, Wenbin
Wang, Yanyun
He, Mingxing
author_facet Suo, Chunguang
Huang, Rujin
Zhou, Guoqiong
Zhang, Wenbin
Wang, Yanyun
He, Mingxing
author_sort Suo, Chunguang
collection PubMed
description Noncontact voltage measurement has the advantages of simple handling, high construction safety, and not being affected by line insulation. However, in practical measurement of noncontact voltage, sensor gain is affected by wire diameter, wire insulation material, and relative position deviation. At the same time, it is also subject to interference from interphase or peripheral coupling electric fields. This paper proposes a noncontact voltage measurement self-calibration method based on dynamic capacitance, which realizes self-calibration of sensor gain through unknown line voltage to be measured. Firstly, the basic principle of the self-calibration method for noncontact voltage measurement based on dynamic capacitance is introduced. Subsequently, the sensor model and parameters were optimized through error analysis and simulation research. Based on this, a sensor prototype and remote dynamic capacitance control unit that can shield against interference are developed. Finally, the accuracy test, anti-interference ability test, and line adaptability test of the sensor prototype were conducted. The accuracy test showed that the maximum relative error of voltage amplitude was 0.89%, and the phase relative error was 1.57%. The anti-interference ability test showed that the error offset was 0.25% when there were interference sources. The line adaptability test shows that the maximum relative error in testing different types of lines is 1.01%.
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spelling pubmed-101422822023-04-29 Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance Suo, Chunguang Huang, Rujin Zhou, Guoqiong Zhang, Wenbin Wang, Yanyun He, Mingxing Sensors (Basel) Article Noncontact voltage measurement has the advantages of simple handling, high construction safety, and not being affected by line insulation. However, in practical measurement of noncontact voltage, sensor gain is affected by wire diameter, wire insulation material, and relative position deviation. At the same time, it is also subject to interference from interphase or peripheral coupling electric fields. This paper proposes a noncontact voltage measurement self-calibration method based on dynamic capacitance, which realizes self-calibration of sensor gain through unknown line voltage to be measured. Firstly, the basic principle of the self-calibration method for noncontact voltage measurement based on dynamic capacitance is introduced. Subsequently, the sensor model and parameters were optimized through error analysis and simulation research. Based on this, a sensor prototype and remote dynamic capacitance control unit that can shield against interference are developed. Finally, the accuracy test, anti-interference ability test, and line adaptability test of the sensor prototype were conducted. The accuracy test showed that the maximum relative error of voltage amplitude was 0.89%, and the phase relative error was 1.57%. The anti-interference ability test showed that the error offset was 0.25% when there were interference sources. The line adaptability test shows that the maximum relative error in testing different types of lines is 1.01%. MDPI 2023-04-10 /pmc/articles/PMC10142282/ /pubmed/37112192 http://dx.doi.org/10.3390/s23083851 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Suo, Chunguang
Huang, Rujin
Zhou, Guoqiong
Zhang, Wenbin
Wang, Yanyun
He, Mingxing
Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance
title Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance
title_full Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance
title_fullStr Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance
title_full_unstemmed Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance
title_short Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance
title_sort self-calibration sensor for contactless voltage measurement based on dynamic capacitance
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10142282/
https://www.ncbi.nlm.nih.gov/pubmed/37112192
http://dx.doi.org/10.3390/s23083851
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