Dissolved gas analysis (DGA) of vegetable oils under electrical stress
Dissolved gas analysis (DGA) is often use by the utility companies to monitor the health and to detect any faults of their transformers. The concentration and proportion of various gases dissolved in the oil are used to indicate whether there is an electrical or thermal fault within the transformer....
| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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IEEE
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/69467/1/Dissolved%20gas%20analysis%20%28DGA%29%20of%20vegetable%20oils%20under%20electrical%20stress.pdf |
| _version_ | 1825933726593318912 |
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| author | Abdul Hamid, Mardhiah Hayati Ishak, Mohd Taufiq Mohd Ariffin, Maslina Katim, Nurul Izzatul Akma Mohamad Amin, Nur Aqilah Azis, Norhafiz |
| author_facet | Abdul Hamid, Mardhiah Hayati Ishak, Mohd Taufiq Mohd Ariffin, Maslina Katim, Nurul Izzatul Akma Mohamad Amin, Nur Aqilah Azis, Norhafiz |
| author_sort | Abdul Hamid, Mardhiah Hayati |
| collection | UPM |
| description | Dissolved gas analysis (DGA) is often use by the utility companies to monitor the health and to detect any faults of their transformers. The concentration and proportion of various gases dissolved in the oil are used to indicate whether there is an electrical or thermal fault within the transformer. A lot of data have been published in the literature on DGA levels for a mineral oil. However, the data for vegetable oils are relatively sparse even though the vegetables oils have been used for more than 10 years in distribution transformers. In this paper, the concentration of dissolved gasses under electrical performance in rice bran oil (RBO) and palm oil (PO) were investigated. These two oils were selected since they show promising potential as alternative insulating dielectric liquid for transformer and easily obtained in Malaysia. Three different gaps (2.5mm, 5mm and 10mm) with sphere to sphere configuration were used in this study. The samples were filtered for three times and dried at 85°C for 48 hours before testing. The AC breakdown experiments were performed in the high voltage laboratory for 100 times. The dissolved gasses from the electrical breakdown voltages were obtained in 2 liter sealed test cell. The gasses concentrations were measured using Gas Chromatography equipment. There were six concentrations of gases contained in the samples which are Hydrogen (H2), Methane (CH4), Ethane (C2H6), Ethylene (C2H4), Acetylene (C2H2) and Carbon monoxide (CO). These gasses were interpreted using IEC ratio, Roger ratio, Dornenburg ratio method and Duval Triangle method in order to investigate whether the existing techniques are suitable for RBO and PO. From the experiments, C2H2 and H2 were the highest amount of gases detected for all samples. The Duval triangle method is the best method in detecting the fault for these oils under electrical breakdown. However, the ratio methods have some limitation in predicting the faults. |
| first_indexed | 2024-03-06T10:01:47Z |
| format | Conference or Workshop Item |
| id | upm.eprints-69467 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:01:47Z |
| publishDate | 2017 |
| publisher | IEEE |
| record_format | dspace |
| spelling | upm.eprints-694672019-07-04T04:39:54Z http://psasir.upm.edu.my/id/eprint/69467/ Dissolved gas analysis (DGA) of vegetable oils under electrical stress Abdul Hamid, Mardhiah Hayati Ishak, Mohd Taufiq Mohd Ariffin, Maslina Katim, Nurul Izzatul Akma Mohamad Amin, Nur Aqilah Azis, Norhafiz Dissolved gas analysis (DGA) is often use by the utility companies to monitor the health and to detect any faults of their transformers. The concentration and proportion of various gases dissolved in the oil are used to indicate whether there is an electrical or thermal fault within the transformer. A lot of data have been published in the literature on DGA levels for a mineral oil. However, the data for vegetable oils are relatively sparse even though the vegetables oils have been used for more than 10 years in distribution transformers. In this paper, the concentration of dissolved gasses under electrical performance in rice bran oil (RBO) and palm oil (PO) were investigated. These two oils were selected since they show promising potential as alternative insulating dielectric liquid for transformer and easily obtained in Malaysia. Three different gaps (2.5mm, 5mm and 10mm) with sphere to sphere configuration were used in this study. The samples were filtered for three times and dried at 85°C for 48 hours before testing. The AC breakdown experiments were performed in the high voltage laboratory for 100 times. The dissolved gasses from the electrical breakdown voltages were obtained in 2 liter sealed test cell. The gasses concentrations were measured using Gas Chromatography equipment. There were six concentrations of gases contained in the samples which are Hydrogen (H2), Methane (CH4), Ethane (C2H6), Ethylene (C2H4), Acetylene (C2H2) and Carbon monoxide (CO). These gasses were interpreted using IEC ratio, Roger ratio, Dornenburg ratio method and Duval Triangle method in order to investigate whether the existing techniques are suitable for RBO and PO. From the experiments, C2H2 and H2 were the highest amount of gases detected for all samples. The Duval triangle method is the best method in detecting the fault for these oils under electrical breakdown. However, the ratio methods have some limitation in predicting the faults. IEEE 2017 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/69467/1/Dissolved%20gas%20analysis%20%28DGA%29%20of%20vegetable%20oils%20under%20electrical%20stress.pdf Abdul Hamid, Mardhiah Hayati and Ishak, Mohd Taufiq and Mohd Ariffin, Maslina and Katim, Nurul Izzatul Akma and Mohamad Amin, Nur Aqilah and Azis, Norhafiz (2017) Dissolved gas analysis (DGA) of vegetable oils under electrical stress. In: International Conference on High Voltage Engineering and Power Systems (ICHVEPS 2017), 2-5 Oct. 2017, Inna Grand Bali Beach, Bali, Indonesia. (pp. 29-34). 10.1109/ICHVEPS.2017.8225862 |
| spellingShingle | Abdul Hamid, Mardhiah Hayati Ishak, Mohd Taufiq Mohd Ariffin, Maslina Katim, Nurul Izzatul Akma Mohamad Amin, Nur Aqilah Azis, Norhafiz Dissolved gas analysis (DGA) of vegetable oils under electrical stress |
| title | Dissolved gas analysis (DGA) of vegetable oils under electrical stress |
| title_full | Dissolved gas analysis (DGA) of vegetable oils under electrical stress |
| title_fullStr | Dissolved gas analysis (DGA) of vegetable oils under electrical stress |
| title_full_unstemmed | Dissolved gas analysis (DGA) of vegetable oils under electrical stress |
| title_short | Dissolved gas analysis (DGA) of vegetable oils under electrical stress |
| title_sort | dissolved gas analysis dga of vegetable oils under electrical stress |
| url | http://psasir.upm.edu.my/id/eprint/69467/1/Dissolved%20gas%20analysis%20%28DGA%29%20of%20vegetable%20oils%20under%20electrical%20stress.pdf |
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