Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742015000200197 |
Resumo: | Abstract In order to measure electrical signals produced by partial discharges in hydrogenerators stator windings, capacitive couplers are regularly used. They are electrically connected to the windings and therefore, require undesired insulation intrusion. For avoiding such an intrusion, a microstrip directional coupler is used, which is experimentally and numerically investigated in this work. This electromagnetic field sensor is analyzed initially via computer simulation using the finite-difference time-domain method. This numerical analysis is fulfilled considering the coupler placed over a stator bar. Experimental high-voltage tests with generator windings were also performed. We compare the results of the measurements obtained by using various sensors and show that the microstrip directional coupler has some important advantages over traditional capacitive sensors such as complete conductive insulation from the windings and the capacity of detecting shorter PD pulses due to their wider bandwidth. |
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Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
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Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator WindingsPartial dischargeshydrogenerator stator windingsmicrostrip directional couplerhigh-voltage experimentsFDTD simulationsAbstract In order to measure electrical signals produced by partial discharges in hydrogenerators stator windings, capacitive couplers are regularly used. They are electrically connected to the windings and therefore, require undesired insulation intrusion. For avoiding such an intrusion, a microstrip directional coupler is used, which is experimentally and numerically investigated in this work. This electromagnetic field sensor is analyzed initially via computer simulation using the finite-difference time-domain method. This numerical analysis is fulfilled considering the coupler placed over a stator bar. Experimental high-voltage tests with generator windings were also performed. We compare the results of the measurements obtained by using various sensors and show that the microstrip directional coupler has some important advantages over traditional capacitive sensors such as complete conductive insulation from the windings and the capacity of detecting shorter PD pulses due to their wider bandwidth.Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo2015-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742015000200197Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.14 n.2 2015reponame:Journal of Microwaves. Optoelectronics and Electromagnetic Applicationsinstname:Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)instacron:SBMO10.1590/2179-10742015v14i2526info:eu-repo/semantics/openAccessDmitriev,VictorOliveira,Rodrigo M. S. deBrasil,Fernando S.Vilhena,Paulo R. M. deModesto,Jonathas F. M.Zampolo,Ronaldo F.eng2016-01-08T00:00:00Zoai:scielo:S2179-10742015000200197Revistahttp://www.jmoe.org/index.php/jmoe/indexONGhttps://old.scielo.br/oai/scielo-oai.php||editor_jmoe@sbmo.org.br2179-10742179-1074opendoar:2016-01-08T00:00Journal of Microwaves. Optoelectronics and Electromagnetic Applications - Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)false |
dc.title.none.fl_str_mv |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings |
title |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings |
spellingShingle |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings Dmitriev,Victor Partial discharges hydrogenerator stator windings microstrip directional coupler high-voltage experiments FDTD simulations |
title_short |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings |
title_full |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings |
title_fullStr |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings |
title_full_unstemmed |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings |
title_sort |
Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings |
author |
Dmitriev,Victor |
author_facet |
Dmitriev,Victor Oliveira,Rodrigo M. S. de Brasil,Fernando S. Vilhena,Paulo R. M. de Modesto,Jonathas F. M. Zampolo,Ronaldo F. |
author_role |
author |
author2 |
Oliveira,Rodrigo M. S. de Brasil,Fernando S. Vilhena,Paulo R. M. de Modesto,Jonathas F. M. Zampolo,Ronaldo F. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Dmitriev,Victor Oliveira,Rodrigo M. S. de Brasil,Fernando S. Vilhena,Paulo R. M. de Modesto,Jonathas F. M. Zampolo,Ronaldo F. |
dc.subject.por.fl_str_mv |
Partial discharges hydrogenerator stator windings microstrip directional coupler high-voltage experiments FDTD simulations |
topic |
Partial discharges hydrogenerator stator windings microstrip directional coupler high-voltage experiments FDTD simulations |
description |
Abstract In order to measure electrical signals produced by partial discharges in hydrogenerators stator windings, capacitive couplers are regularly used. They are electrically connected to the windings and therefore, require undesired insulation intrusion. For avoiding such an intrusion, a microstrip directional coupler is used, which is experimentally and numerically investigated in this work. This electromagnetic field sensor is analyzed initially via computer simulation using the finite-difference time-domain method. This numerical analysis is fulfilled considering the coupler placed over a stator bar. Experimental high-voltage tests with generator windings were also performed. We compare the results of the measurements obtained by using various sensors and show that the microstrip directional coupler has some important advantages over traditional capacitive sensors such as complete conductive insulation from the windings and the capacity of detecting shorter PD pulses due to their wider bandwidth. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742015000200197 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742015000200197 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2179-10742015v14i2526 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo |
publisher.none.fl_str_mv |
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo |
dc.source.none.fl_str_mv |
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.14 n.2 2015 reponame:Journal of Microwaves. Optoelectronics and Electromagnetic Applications instname:Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) instacron:SBMO |
instname_str |
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) |
instacron_str |
SBMO |
institution |
SBMO |
reponame_str |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
collection |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
repository.name.fl_str_mv |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications - Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) |
repository.mail.fl_str_mv |
||editor_jmoe@sbmo.org.br |
_version_ |
1752122125810925568 |