Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer
Recently, Polarization Depolarization current (PDC) measurement is widely accepted time domain spectroscopy-based method for assessing the insulation condition. Various performance parameters like Dissipation factor (%tan<inline-formula> <tex-math notation="LaTeX">$\...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10145591/ |
| _version_ | 1797804055057137664 |
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| author | Alok Kumar Deepak Mishra Arijit Baral |
| author_facet | Alok Kumar Deepak Mishra Arijit Baral |
| author_sort | Alok Kumar |
| collection | DOAJ |
| description | Recently, Polarization Depolarization current (PDC) measurement is widely accepted time domain spectroscopy-based method for assessing the insulation condition. Various performance parameters like Dissipation factor (%tan<inline-formula> <tex-math notation="LaTeX">$\delta $ </tex-math></inline-formula>), Paper Moisture (%pm), Dielectric Adsorption Ratio (DAR), Polarization index (PI) etc. can be estimated by analyzing the PDC data. During field measurement various factors influences the recorded PDC data. As per existing literature, presence of low frequency noise, effect of temperature variation and influence of residual charge are common during field measurement. These factors significantly affect recorded polarization current and hence estimated performance parameters. Hence, analysis using recorded polarization current data may provide misleading information regarding insulation condition. Under such practical situation where polarization current is affected by above mentioned factors that generally observed during field measurement, depolarization current should be used for analysis of insulation condition. The depolarization current does not influence by such external factors. The present work shows the importance of depolarization current where polarization current is influenced by external low frequency noise and residual charge. The analysis firstly applied on sample prepared in the laboratory and then on data collected from real life in-situ transformers. The results obtained from the analysis shows that the data obtained from depolarization current is more reliable. |
| first_indexed | 2024-03-13T05:31:22Z |
| format | Article |
| id | doaj.art-53b98d63965f4960aef1712ed3b7302e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-13T05:31:22Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-53b98d63965f4960aef1712ed3b7302e2023-06-14T23:00:16ZengIEEEIEEE Access2169-35362023-01-0111568585686410.1109/ACCESS.2023.328391410145591Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power TransformerAlok Kumar0Deepak Mishra1https://orcid.org/0000-0003-3704-5627Arijit Baral2https://orcid.org/0000-0002-1905-9059Department of Electrical Engineering, Indian Institute of Technology (Indian School of Mines) at Dhanbad, Dhanbad, IndiaDepartment of Electrical Engineering, Indian Maritime University, Kolkata, IndiaDepartment of Electrical Engineering, Indian Institute of Technology (Indian School of Mines) at Dhanbad, Dhanbad, IndiaRecently, Polarization Depolarization current (PDC) measurement is widely accepted time domain spectroscopy-based method for assessing the insulation condition. Various performance parameters like Dissipation factor (%tan<inline-formula> <tex-math notation="LaTeX">$\delta $ </tex-math></inline-formula>), Paper Moisture (%pm), Dielectric Adsorption Ratio (DAR), Polarization index (PI) etc. can be estimated by analyzing the PDC data. During field measurement various factors influences the recorded PDC data. As per existing literature, presence of low frequency noise, effect of temperature variation and influence of residual charge are common during field measurement. These factors significantly affect recorded polarization current and hence estimated performance parameters. Hence, analysis using recorded polarization current data may provide misleading information regarding insulation condition. Under such practical situation where polarization current is affected by above mentioned factors that generally observed during field measurement, depolarization current should be used for analysis of insulation condition. The depolarization current does not influence by such external factors. The present work shows the importance of depolarization current where polarization current is influenced by external low frequency noise and residual charge. The analysis firstly applied on sample prepared in the laboratory and then on data collected from real life in-situ transformers. The results obtained from the analysis shows that the data obtained from depolarization current is more reliable.https://ieeexplore.ieee.org/document/10145591/Power transformeroil-paper insulationresidual chargedissipation factorpaper moisture |
| spellingShingle | Alok Kumar Deepak Mishra Arijit Baral Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer IEEE Access Power transformer oil-paper insulation residual charge dissipation factor paper moisture |
| title | Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer |
| title_full | Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer |
| title_fullStr | Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer |
| title_full_unstemmed | Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer |
| title_short | Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer |
| title_sort | importance of depolarization current in the diagnosis of oil paper insulation of power transformer |
| topic | Power transformer oil-paper insulation residual charge dissipation factor paper moisture |
| url | https://ieeexplore.ieee.org/document/10145591/ |
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