| Application of extension method to fault diagnosis of transformer |
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| 作者姓名： | 邓宏贵 曹建 罗安 夏向阳 |
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| 作者单位： | School of Physics Science and Technology Central South University，School of Physics Science and Technology，Central South University，School of Electrical and Information Engineering，Hunan University，School of Electrical and Information Engineering，University of Theory and Technology，Changsha 410083，China，Changsha 410083，China，Changsha 410082，China，Changsha 410077，China |
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| 摘 要： | A novel extension diagnosis method was proposed for enhancing the diagnosis ability of the conventional dissolved gas analysis. Based on the extension theory a matter-element model was established for qualitatively and quantitatively describing the fault diagnosis problem of power transformers. The degree of relation based on the dependent functions was employed to determine the nature and the grade of the faults in a transformer system. And the proposed method was verified with the experimental data. The results show that accuracy rate of the diagnosis method exceeds 90% and two kinds of faults can be detected at the same time.
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| 关 键 词： | 能量变压器 故障诊断 延伸性 电力 |
| 收稿时间： | 6 May 2006 |
| 修稿时间： | 2006-05-06 |
Application of extension method to fault diagnosis of transformer |
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| Deng Hong-gui , Cao Jian , Luo An and Xia Xiang-yang.Application of extension method to fault diagnosis of transformer[J].Journal of Central South University of Technology,2007,14(1):88-93. |
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| Authors: | Deng Hong-gui Cao Jian Luo An and Xia Xiang-yang |
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| Affiliation: | 1. School of Physics Science and Technology, Central South University, Changsha 410083, China; 2. School of Electrical and Information Engineering, Hunan University, Changsha 410082, China; 3. School of Electrical and Information Engineering, University of Theory and Technology, Changsha 410077, China |
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| Abstract: | A novel extension diagnosis method was proposed for enhancing the diagnosis ability of the conventional dissolved gas analysis. Based on the extension theory a matter-element model was established for qualitatively and quantitatively describing the fault diagnosis problem of power transformers. The degree of relation based on the dependent functions was employed to determine the nature and the grade of the faults in a transformer system. And the proposed method was verified with the experimental data. The results show that accuracy rate of the diagnosis method exceeds 90% and two kinds of faults can be detected at the same time. |
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| Keywords: | power transformer fault diagnosis extension theory matter-element model dependent function |
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