Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV Substation
The problems that occur in 20 MVA power transformers are insulation feasibility issues, voltage regulation and internal relay malfunctions. The impact is to cause a degradation of transformer reliability. The solution is how to ensure the feasibility of the transformer by evaluating the transformer...
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Institut Teknologi Dirgantara Adisutjipto
2025-05-01
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| Series: | Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls |
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| Online Access: | https://ejournals.itda.ac.id/index.php/avitec/article/view/2901 |
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| _version_ | 1839610090625171456 |
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| author | Fajar Bagus Ramadhan Muhamad Haddin |
| author_facet | Fajar Bagus Ramadhan Muhamad Haddin |
| author_sort | Fajar Bagus Ramadhan |
| collection | DOAJ |
| description | The problems that occur in 20 MVA power transformers are insulation feasibility issues, voltage regulation and internal relay malfunctions. The impact is to cause a degradation of transformer reliability. The solution is how to ensure the feasibility of the transformer by evaluating the transformer feasibility test including the insulation subsystem, voltage ratio, and internal relay. This research discusses the feasibility of a 20 MVA transformer based on insulation, voltage ratio and internal relay. The model is a set of 20 MVA transformer GI 150 kV. The test method is carried out using polarization index, tangent delta, breakdown voltage, voltage ratio and sudden pressure relay function test. The references of all test methods are IEEE Std 62-1995 standard for polarization index, CIGRE TB 445 for tangent delta, IEC 60156-02-1995 for breakdown voltage, IEEE C57.125.1991 standard for voltage ratio and internal relay test validated using Proteus application. The test methods proved effective for evaluating the 20 MVA transformer feasibility test. This is evidenced by the worst value of 1.06 in testing the polarization index of the secondary to tertiary winding. Then 0.53% of tap voltage ratio 17 phase T and 0.58% of tap voltage ratio 18 phase T. The internal relay works as it should. The results obtained, the transformer is in an unfit condition and there needs to be further investigated so that it can be normally operated. |
| format | Article |
| id | doaj-art-a540fc8d28c94d538cb11f7cb38f6da6 |
| institution | Matheson Library |
| issn | 2685-2381 2715-2626 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Institut Teknologi Dirgantara Adisutjipto |
| record_format | Article |
| series | Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls |
| spelling | doaj-art-a540fc8d28c94d538cb11f7cb38f6da62025-07-30T00:34:17ZengInstitut Teknologi Dirgantara AdisutjiptoAviation Electronics, Information Technology, Telecommunications, Electricals, Controls2685-23812715-26262025-05-017212914010.28989/avitec.v7i2.29011051Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV SubstationFajar Bagus Ramadhan0Muhamad Haddin1Universitas Islam Sultan AgungUniversitas Islam Sultan AgungThe problems that occur in 20 MVA power transformers are insulation feasibility issues, voltage regulation and internal relay malfunctions. The impact is to cause a degradation of transformer reliability. The solution is how to ensure the feasibility of the transformer by evaluating the transformer feasibility test including the insulation subsystem, voltage ratio, and internal relay. This research discusses the feasibility of a 20 MVA transformer based on insulation, voltage ratio and internal relay. The model is a set of 20 MVA transformer GI 150 kV. The test method is carried out using polarization index, tangent delta, breakdown voltage, voltage ratio and sudden pressure relay function test. The references of all test methods are IEEE Std 62-1995 standard for polarization index, CIGRE TB 445 for tangent delta, IEC 60156-02-1995 for breakdown voltage, IEEE C57.125.1991 standard for voltage ratio and internal relay test validated using Proteus application. The test methods proved effective for evaluating the 20 MVA transformer feasibility test. This is evidenced by the worst value of 1.06 in testing the polarization index of the secondary to tertiary winding. Then 0.53% of tap voltage ratio 17 phase T and 0.58% of tap voltage ratio 18 phase T. The internal relay works as it should. The results obtained, the transformer is in an unfit condition and there needs to be further investigated so that it can be normally operated.https://ejournals.itda.ac.id/index.php/avitec/article/view/2901polarization indextangent deltabreakdown voltageratiointernal relay. |
| spellingShingle | Fajar Bagus Ramadhan Muhamad Haddin Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV Substation Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls polarization index tangent delta breakdown voltage ratio internal relay. |
| title | Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV Substation |
| title_full | Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV Substation |
| title_fullStr | Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV Substation |
| title_full_unstemmed | Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV Substation |
| title_short | Feasibility Test Based on Insulation, Ratio and Internal Protection for 20 MVA Power Transformer of 150/20 kV Substation |
| title_sort | feasibility test based on insulation ratio and internal protection for 20 mva power transformer of 150 20 kv substation |
| topic | polarization index tangent delta breakdown voltage ratio internal relay. |
| url | https://ejournals.itda.ac.id/index.php/avitec/article/view/2901 |
| work_keys_str_mv | AT fajarbagusramadhan feasibilitytestbasedoninsulationratioandinternalprotectionfor20mvapowertransformerof15020kvsubstation AT muhamadhaddin feasibilitytestbasedoninsulationratioandinternalprotectionfor20mvapowertransformerof15020kvsubstation |