Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC Voltage
Contaminants in transformer oil insulation can float when meeting several conditions. Then, the presence of floating contaminants affects the electrical characteristics of oil insulation. Therefore, the pre-breakdown (corona) and breakdown characteristics due to metallic floating particles in transf...
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MDPI AG
2021-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/12/3669 |
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| author | I. Made Yulistya Negara Daniar Fahmi Dimas Anton Asfani I. G. N. Satriyadi Hernanda Mochammad Wahyudi Muhammad Novis Ibrahim |
| author_facet | I. Made Yulistya Negara Daniar Fahmi Dimas Anton Asfani I. G. N. Satriyadi Hernanda Mochammad Wahyudi Muhammad Novis Ibrahim |
| author_sort | I. Made Yulistya Negara |
| collection | DOAJ |
| description | Contaminants in transformer oil insulation can float when meeting several conditions. Then, the presence of floating contaminants affects the electrical characteristics of oil insulation. Therefore, the pre-breakdown (corona) and breakdown characteristics due to metallic floating particles in transformer oil insulation would be investigated. This test used DC high voltage stress. A 56 Ω resistor was connected to the oscilloscope to detect the corona currents. The camera was used to capture the images of corona light emission. In addition, the electric field between the electrode and particles was simulated. The variables were the particle size, including its shape, and the distance between the particles and the grounded electrode. The experimental results show that the average value of corona inception and breakdown was inversely proportional to the size of floating particles. The peak value of corona current was directly proportional to the particle size. The lowest breakdown voltage was found when the particle was close to the electrode, but they were not in contact. |
| first_indexed | 2024-03-10T10:14:17Z |
| format | Article |
| id | doaj.art-0a2313e80a6d4d6da83dd7bb7cd8bc49 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T10:14:17Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-0a2313e80a6d4d6da83dd7bb7cd8bc492023-11-22T00:55:51ZengMDPI AGEnergies1996-10732021-06-011412366910.3390/en14123669Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC VoltageI. Made Yulistya Negara0Daniar Fahmi1Dimas Anton Asfani2I. G. N. Satriyadi Hernanda3Mochammad Wahyudi4Muhammad Novis Ibrahim5Department of Electrical Engineering, Faculty of Intelligent Electrical and Informatic Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, IndonesiaDepartment of Electrical Engineering, Faculty of Intelligent Electrical and Informatic Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, IndonesiaDepartment of Electrical Engineering, Faculty of Intelligent Electrical and Informatic Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, IndonesiaDepartment of Electrical Engineering, Faculty of Intelligent Electrical and Informatic Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, IndonesiaDepartment of Electrical Engineering and Information Technology, Faculty of Engineering, Universitas Gajah Mada, Yogyakarta 55281, IndonesiaDepartment of Electrical Engineering, Faculty of Intelligent Electrical and Informatic Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, IndonesiaContaminants in transformer oil insulation can float when meeting several conditions. Then, the presence of floating contaminants affects the electrical characteristics of oil insulation. Therefore, the pre-breakdown (corona) and breakdown characteristics due to metallic floating particles in transformer oil insulation would be investigated. This test used DC high voltage stress. A 56 Ω resistor was connected to the oscilloscope to detect the corona currents. The camera was used to capture the images of corona light emission. In addition, the electric field between the electrode and particles was simulated. The variables were the particle size, including its shape, and the distance between the particles and the grounded electrode. The experimental results show that the average value of corona inception and breakdown was inversely proportional to the size of floating particles. The peak value of corona current was directly proportional to the particle size. The lowest breakdown voltage was found when the particle was close to the electrode, but they were not in contact.https://www.mdpi.com/1996-1073/14/12/3669corona inceptionelectric fieldfloating metal particleoil insulation breakdown |
| spellingShingle | I. Made Yulistya Negara Daniar Fahmi Dimas Anton Asfani I. G. N. Satriyadi Hernanda Mochammad Wahyudi Muhammad Novis Ibrahim Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC Voltage Energies corona inception electric field floating metal particle oil insulation breakdown |
| title | Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC Voltage |
| title_full | Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC Voltage |
| title_fullStr | Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC Voltage |
| title_full_unstemmed | Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC Voltage |
| title_short | Effect of Floating Metallic Particles in Pre-Breakdown and Breakdown Characteristics of Oil Transformer under DC Voltage |
| title_sort | effect of floating metallic particles in pre breakdown and breakdown characteristics of oil transformer under dc voltage |
| topic | corona inception electric field floating metal particle oil insulation breakdown |
| url | https://www.mdpi.com/1996-1073/14/12/3669 |
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