Cargando…

Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor

The accurate voltage measurement of distribution networks is of great significance in power dispatching and fault diagnosis. Voltage sensors based on the spatial electric field effect do not require grounding, which provides the possibility for the distributed measurement of transmission line voltag...

Descripción completa

Detalles Bibliográficos
Autores principales: Huang, Rujin, Zhang, Wenbin, Zhu, Junyu, Zou, Xiangqi, Wu, Hetao, Suo, Chunguang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10458635/
https://www.ncbi.nlm.nih.gov/pubmed/37631698
http://dx.doi.org/10.3390/s23167161
_version_ 1785097213107503104
author Huang, Rujin
Zhang, Wenbin
Zhu, Junyu
Zou, Xiangqi
Wu, Hetao
Suo, Chunguang
author_facet Huang, Rujin
Zhang, Wenbin
Zhu, Junyu
Zou, Xiangqi
Wu, Hetao
Suo, Chunguang
author_sort Huang, Rujin
collection PubMed
description The accurate voltage measurement of distribution networks is of great significance in power dispatching and fault diagnosis. Voltage sensors based on the spatial electric field effect do not require grounding, which provides the possibility for the distributed measurement of transmission line voltages. However, the divider ratio of suspension grounding voltage sensors is affected by the height between the sensor and the ground, as well as the distance between the sensor and the telegraph pole. In this paper, a self-calibration method based on internal capacitance transformation is proposed to realize the on-line calibration of suspension grounding voltage sensors. The calibration is accomplished by switching different parameters in the conditioning circuit, and the calibration process does not require power failure or known input excitation. In addition, the impact of electric fields in the other two phases of three-phase transmission lines on measurement through simulation research is quantified in this paper. In order to reduce the impact of interference electric fields, an equipotential shielding structure is designed. The circuit topology and probe prototype have been developed and testing has been conducted in laboratory conditions; the experimental results show that the maximum relative error of voltage amplitude is 1.65%, and the phase relative error is 0.94%. The measurement accuracy is not limited by the height to ground or the distance to the telegraph pole. In addition, in the application of an equipotential shielding probe, the maximum deviation of measured voltage is 0.7% with and without interference electric fields.
format Online
Article
Text
id pubmed-10458635
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-104586352023-08-27 Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor Huang, Rujin Zhang, Wenbin Zhu, Junyu Zou, Xiangqi Wu, Hetao Suo, Chunguang Sensors (Basel) Article The accurate voltage measurement of distribution networks is of great significance in power dispatching and fault diagnosis. Voltage sensors based on the spatial electric field effect do not require grounding, which provides the possibility for the distributed measurement of transmission line voltages. However, the divider ratio of suspension grounding voltage sensors is affected by the height between the sensor and the ground, as well as the distance between the sensor and the telegraph pole. In this paper, a self-calibration method based on internal capacitance transformation is proposed to realize the on-line calibration of suspension grounding voltage sensors. The calibration is accomplished by switching different parameters in the conditioning circuit, and the calibration process does not require power failure or known input excitation. In addition, the impact of electric fields in the other two phases of three-phase transmission lines on measurement through simulation research is quantified in this paper. In order to reduce the impact of interference electric fields, an equipotential shielding structure is designed. The circuit topology and probe prototype have been developed and testing has been conducted in laboratory conditions; the experimental results show that the maximum relative error of voltage amplitude is 1.65%, and the phase relative error is 0.94%. The measurement accuracy is not limited by the height to ground or the distance to the telegraph pole. In addition, in the application of an equipotential shielding probe, the maximum deviation of measured voltage is 0.7% with and without interference electric fields. MDPI 2023-08-14 /pmc/articles/PMC10458635/ /pubmed/37631698 http://dx.doi.org/10.3390/s23167161 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
Huang, Rujin
Zhang, Wenbin
Zhu, Junyu
Zou, Xiangqi
Wu, Hetao
Suo, Chunguang
Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor
title Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor
title_full Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor
title_fullStr Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor
title_full_unstemmed Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor
title_short Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor
title_sort transmission line voltage measurement utilizing a calibrated suspension grounding voltage sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10458635/
https://www.ncbi.nlm.nih.gov/pubmed/37631698
http://dx.doi.org/10.3390/s23167161
work_keys_str_mv AT huangrujin transmissionlinevoltagemeasurementutilizingacalibratedsuspensiongroundingvoltagesensor
AT zhangwenbin transmissionlinevoltagemeasurementutilizingacalibratedsuspensiongroundingvoltagesensor
AT zhujunyu transmissionlinevoltagemeasurementutilizingacalibratedsuspensiongroundingvoltagesensor
AT zouxiangqi transmissionlinevoltagemeasurementutilizingacalibratedsuspensiongroundingvoltagesensor
AT wuhetao transmissionlinevoltagemeasurementutilizingacalibratedsuspensiongroundingvoltagesensor
AT suochunguang transmissionlinevoltagemeasurementutilizingacalibratedsuspensiongroundingvoltagesensor