Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severity
Dissolved gas analysis (DGA) is a common technology used in the on-site maintenance of oil-immersed power transformers in the power industry at present. However, when the content of dissolved gas in the oil reaches the attention value DGA method can effectively diagnose the operating state of the tr...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2022.1056604/full |
| _version_ | 1828062738378653696 |
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| author | Xiu Zhou Tian Tian Ningbo Liu Jin Bai Yan Luo Xiuguang Li Ninghui He Pengcheng Zhang Sun Jun |
| author_facet | Xiu Zhou Tian Tian Ningbo Liu Jin Bai Yan Luo Xiuguang Li Ninghui He Pengcheng Zhang Sun Jun |
| author_sort | Xiu Zhou |
| collection | DOAJ |
| description | Dissolved gas analysis (DGA) is a common technology used in the on-site maintenance of oil-immersed power transformers in the power industry at present. However, when the content of dissolved gas in the oil reaches the attention value DGA method can effectively diagnose the operating state of the transformer. Due to the lack of gas production data of free gas which was detected when the faults occur, DGA method cannot timely diagnose the transformer status. To solve the above problem, an experimental platform is built for studying the free gas generation law in oil-immersed transformers under discharge faults, and the characteristic free gas information under discharge fault of transformer is obtained through the experiment. It is found that the existing DGA method cannot accurately analyze the types and severity of sudden serious insulation faults. When high-energy partial discharge fault occurred in the equipment, CO, CO2, CH4, and H2 will be collected in large quantities on the oil surface. These four gases can be used as the basis for characterizing high-energy partial discharge faults. When spark discharge occurred in the equipment, C2H6, C2H4, and C2H2 also be collected on the oil surface which can be used as a diagnostic basis for spark discharge. Moreover, it is found that the existing three-ratio method cannot be used for accurate analysis of oil free characteristic gas, so it is necessary to explore new diagnostic methods. The aim of this study is to explore the pattern of free gas production law by experiments when discharge faults occur and to provide data for a new diagnostic method. |
| first_indexed | 2024-04-10T22:31:51Z |
| format | Article |
| id | doaj.art-5bc07a33e0544261806a0c31b2ae584a |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-04-10T22:31:51Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-5bc07a33e0544261806a0c31b2ae584a2023-01-17T04:34:16ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2023-01-011010.3389/fenrg.2022.10566041056604Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severityXiu Zhou0Tian Tian1Ningbo Liu2Jin Bai3Yan Luo4Xiuguang Li5Ninghui He6Pengcheng Zhang7Sun Jun8Power Science Research Institute of State Grid Ningxia Power Co., Yinchuan, ChinaPower Science Research Institute of State Grid Ningxia Power Co., Yinchuan, ChinaShizuishan Power Supply Company of State Grid Ningxia Electric Power Co., Ltd., Shizuishan, ChinaPower Science Research Institute of State Grid Ningxia Power Co., Yinchuan, ChinaPower Science Research Institute of State Grid Ningxia Power Co., Yinchuan, ChinaPower Science Research Institute of State Grid Ningxia Power Co., Yinchuan, ChinaPower Science Research Institute of State Grid Ningxia Power Co., Yinchuan, ChinaShizuishan Power Supply Company of State Grid Ningxia Electric Power Co., Ltd., Shizuishan, ChinaWuhan Pandian Technology Co., Ltd., Wuhan, ChinaDissolved gas analysis (DGA) is a common technology used in the on-site maintenance of oil-immersed power transformers in the power industry at present. However, when the content of dissolved gas in the oil reaches the attention value DGA method can effectively diagnose the operating state of the transformer. Due to the lack of gas production data of free gas which was detected when the faults occur, DGA method cannot timely diagnose the transformer status. To solve the above problem, an experimental platform is built for studying the free gas generation law in oil-immersed transformers under discharge faults, and the characteristic free gas information under discharge fault of transformer is obtained through the experiment. It is found that the existing DGA method cannot accurately analyze the types and severity of sudden serious insulation faults. When high-energy partial discharge fault occurred in the equipment, CO, CO2, CH4, and H2 will be collected in large quantities on the oil surface. These four gases can be used as the basis for characterizing high-energy partial discharge faults. When spark discharge occurred in the equipment, C2H6, C2H4, and C2H2 also be collected on the oil surface which can be used as a diagnostic basis for spark discharge. Moreover, it is found that the existing three-ratio method cannot be used for accurate analysis of oil free characteristic gas, so it is necessary to explore new diagnostic methods. The aim of this study is to explore the pattern of free gas production law by experiments when discharge faults occur and to provide data for a new diagnostic method.https://www.frontiersin.org/articles/10.3389/fenrg.2022.1056604/fulltransformerdischarge faultsfree gasproduction lawDGA |
| spellingShingle | Xiu Zhou Tian Tian Ningbo Liu Jin Bai Yan Luo Xiuguang Li Ninghui He Pengcheng Zhang Sun Jun Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severity Frontiers in Energy Research transformer discharge faults free gas production law DGA |
| title | Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severity |
| title_full | Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severity |
| title_fullStr | Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severity |
| title_full_unstemmed | Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severity |
| title_short | Research on gas production law of free gas in oil-immersed power transformer under discharge fault of different severity |
| title_sort | research on gas production law of free gas in oil immersed power transformer under discharge fault of different severity |
| topic | transformer discharge faults free gas production law DGA |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2022.1056604/full |
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