Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives
Partial discharge (PD) diagnostics test is a reliable solution for estimating insulation health conditions in power system components. During laboratory PD diagnostics, the effect of harmonic components in the voltage waveform generated by variable frequency drives (VFD) fed electric motors (EMs) is...
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John Wiley and Sons Inc
2025
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| author | Hassan W. Akmal M. Hussain G.A. Raza A. Shafiq M. |
| author2 | 56038670200 |
| author_facet | 56038670200 Hassan W. Akmal M. Hussain G.A. Raza A. Shafiq M. |
| author_sort | Hassan W. |
| building | UNITEN Library |
| collection | Institutional Repository |
| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Partial discharge (PD) diagnostics test is a reliable solution for estimating insulation health conditions in power system components. During laboratory PD diagnostics, the effect of harmonic components in the voltage waveform generated by variable frequency drives (VFD) fed electric motors (EMs) is often overlooked. As VFD-fed EMs operate at low speeds, the harmonic concentration in the voltage increases. It has been found that PD activity in VFD-fed EM is significantly affected by the addition of harmonic components in the voltage, thus making it necessary to consider their impact when performing true PD diagnostics. This paper investigates the influence of voltage harmonic distortion produced in VFD-fed EM on PD severity and the subsequent insulation degradation. Eight VFD-fed EM are used to study the PD behaviour under different levels of harmonic pollution. The PD characteristics, such as inception voltage, pulse repetition rate, accumulated apparent charge, average discharge current, discharge power, and quadratic rate, are determined. Using probability distribution functions, PD activity and severity at various voltage harmonic levels are estimated. The proposed technique can be used to plan the maintenance activities that ensure the reliability for industrial applications dealing with the voltage harmonic distortion. ? 2023 The Authors. IET Generation, Transmission & Distribution published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology. |
| format | Article |
| id | my.uniten.dspace-36783 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2025 |
| publisher | John Wiley and Sons Inc |
| record_format | dspace |
| spelling | my.uniten.dspace-367832025-03-03T15:44:39Z Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives Hassan W. Akmal M. Hussain G.A. Raza A. Shafiq M. 56038670200 56830270900 57203105565 58787225100 56984295900 AC motors Distribution functions Electric drives Electric power distribution Electric power transmission Harmonic analysis Harmonic distortion Partial discharges Pulse repetition rate Diagnostic tests Harmonics component Harmonics distortion Partial discharge activity Partial discharge diagnosis Partial discharge measurements Variable frequency drives Variable-speed drives Voltage harmonic distortion Voltage harmonics Variable speed drives Partial discharge (PD) diagnostics test is a reliable solution for estimating insulation health conditions in power system components. During laboratory PD diagnostics, the effect of harmonic components in the voltage waveform generated by variable frequency drives (VFD) fed electric motors (EMs) is often overlooked. As VFD-fed EMs operate at low speeds, the harmonic concentration in the voltage increases. It has been found that PD activity in VFD-fed EM is significantly affected by the addition of harmonic components in the voltage, thus making it necessary to consider their impact when performing true PD diagnostics. This paper investigates the influence of voltage harmonic distortion produced in VFD-fed EM on PD severity and the subsequent insulation degradation. Eight VFD-fed EM are used to study the PD behaviour under different levels of harmonic pollution. The PD characteristics, such as inception voltage, pulse repetition rate, accumulated apparent charge, average discharge current, discharge power, and quadratic rate, are determined. Using probability distribution functions, PD activity and severity at various voltage harmonic levels are estimated. The proposed technique can be used to plan the maintenance activities that ensure the reliability for industrial applications dealing with the voltage harmonic distortion. ? 2023 The Authors. IET Generation, Transmission & Distribution published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology. Final 2025-03-03T07:44:38Z 2025-03-03T07:44:38Z 2024 Article 10.1049/gtd2.13089 2-s2.0-85180190436 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85180190436&doi=10.1049%2fgtd2.13089&partnerID=40&md5=a218dfb79fa2745481a142f4df8abb27 https://irepository.uniten.edu.my/handle/123456789/36783 18 3 506 516 All Open Access; Gold Open Access; Green Open Access John Wiley and Sons Inc Scopus |
| spellingShingle | AC motors Distribution functions Electric drives Electric power distribution Electric power transmission Harmonic analysis Harmonic distortion Partial discharges Pulse repetition rate Diagnostic tests Harmonics component Harmonics distortion Partial discharge activity Partial discharge diagnosis Partial discharge measurements Variable frequency drives Variable-speed drives Voltage harmonic distortion Voltage harmonics Variable speed drives Hassan W. Akmal M. Hussain G.A. Raza A. Shafiq M. Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives |
| title | Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives |
| title_full | Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives |
| title_fullStr | Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives |
| title_full_unstemmed | Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives |
| title_short | Close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives |
| title_sort | close accord on partial discharge diagnosis during voltage harmonics in electric motors fed by variable frequency drives |
| topic | AC motors Distribution functions Electric drives Electric power distribution Electric power transmission Harmonic analysis Harmonic distortion Partial discharges Pulse repetition rate Diagnostic tests Harmonics component Harmonics distortion Partial discharge activity Partial discharge diagnosis Partial discharge measurements Variable frequency drives Variable-speed drives Voltage harmonic distortion Voltage harmonics Variable speed drives |
| url_provider | http://dspace.uniten.edu.my/ |