Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions
Epoxy resin impregnated paper (RIP) bushings are widely used as transformer bushings and wall bushings, but this type of bushing is easy to be dampened. In order to study the effect of moisture on the bushings' insulation performance, a test device was established to simulate the moisture absor...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-10-01
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| Series: | The Journal of Engineering |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8659 |
| _version_ | 1818967353783746560 |
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| author | Zuoming Xu Fuquan Yi Guanpeng Hu Xin Wang Pengbo Yin Wei Hu Zongren Peng |
| author_facet | Zuoming Xu Fuquan Yi Guanpeng Hu Xin Wang Pengbo Yin Wei Hu Zongren Peng |
| author_sort | Zuoming Xu |
| collection | DOAJ |
| description | Epoxy resin impregnated paper (RIP) bushings are widely used as transformer bushings and wall bushings, but this type of bushing is easy to be dampened. In order to study the effect of moisture on the bushings' insulation performance, a test device was established to simulate the moisture absorption process in the air or N(2) gas. Based on the frequency-domain dielectric spectroscopy (FDS) method, FDS curves that indicate the dielectric loss factor (tan δ) and capacitance (C) under different frequencies were tested and analysed. The results demonstrated that the FDS curve moves to the high frequency direction with the increase of the moisture content, and there exist minus tan δ and a negative peak in low-frequency band. Since the moisture content is much lower than in the air, tan δ and C under power frequency of the bushing almost unchanged in the N(2) gas. However, the tan δ under 0.1 Hz increases sharply with the increase of trace moisture, and the higher moisture content, the greater increase rate. A damp diagnosis method for RIP bushings is proposed based on the FDS curves' frequency translation characteristics and tan δ variation law. Also the results can give references for RIP bushings' insulation diagnosis. |
| first_indexed | 2024-12-20T13:47:27Z |
| format | Article |
| id | doaj.art-021fba65330e461fac501d7500765bcb |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-20T13:47:27Z |
| publishDate | 2018-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-021fba65330e461fac501d7500765bcb2022-12-21T19:38:37ZengWileyThe Journal of Engineering2051-33052018-10-0110.1049/joe.2018.8659JOE.2018.8659Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditionsZuoming XuFuquan YiGuanpeng HuXin WangPengbo Yin0Wei Hu1Zongren PengChina Electric Power Research InstituteChina Electric Power Research InstituteEpoxy resin impregnated paper (RIP) bushings are widely used as transformer bushings and wall bushings, but this type of bushing is easy to be dampened. In order to study the effect of moisture on the bushings' insulation performance, a test device was established to simulate the moisture absorption process in the air or N(2) gas. Based on the frequency-domain dielectric spectroscopy (FDS) method, FDS curves that indicate the dielectric loss factor (tan δ) and capacitance (C) under different frequencies were tested and analysed. The results demonstrated that the FDS curve moves to the high frequency direction with the increase of the moisture content, and there exist minus tan δ and a negative peak in low-frequency band. Since the moisture content is much lower than in the air, tan δ and C under power frequency of the bushing almost unchanged in the N(2) gas. However, the tan δ under 0.1 Hz increases sharply with the increase of trace moisture, and the higher moisture content, the greater increase rate. A damp diagnosis method for RIP bushings is proposed based on the FDS curves' frequency translation characteristics and tan δ variation law. Also the results can give references for RIP bushings' insulation diagnosis.https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8659moisturedielectric lossespaperbushingsepoxy insulationimpregnated insulationnitrogendamp diagnosis methodRIP bushingsFDS curvesepoxy resin impregnated paper bushingsdamp conditionstransformer bushingswall bushingstest devicemoisture absorption processfrequency-domain dielectric spectroscopy methoddielectric loss factorpower frequencytrace moisturetan δ variation lawfrequency translation characteristicsmoisture contentN(2) |
| spellingShingle | Zuoming Xu Fuquan Yi Guanpeng Hu Xin Wang Pengbo Yin Wei Hu Zongren Peng Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions The Journal of Engineering moisture dielectric losses paper bushings epoxy insulation impregnated insulation nitrogen damp diagnosis method RIP bushings FDS curves epoxy resin impregnated paper bushings damp conditions transformer bushings wall bushings test device moisture absorption process frequency-domain dielectric spectroscopy method dielectric loss factor power frequency trace moisture tan δ variation law frequency translation characteristics moisture content N(2) |
| title | Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions |
| title_full | Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions |
| title_fullStr | Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions |
| title_full_unstemmed | Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions |
| title_short | Study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions |
| title_sort | study on frequency domain dielectric spectroscopy of epoxy resin impregnated paper bushings under damp conditions |
| topic | moisture dielectric losses paper bushings epoxy insulation impregnated insulation nitrogen damp diagnosis method RIP bushings FDS curves epoxy resin impregnated paper bushings damp conditions transformer bushings wall bushings test device moisture absorption process frequency-domain dielectric spectroscopy method dielectric loss factor power frequency trace moisture tan δ variation law frequency translation characteristics moisture content N(2) |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8659 |
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