High-Resistance Connection Diagnosis of Doubly Fed Induction Generators
The high resistance connection fault of the stator is a common fault in doubly fed induction generators, which causes a three-phase imbalance in the stator circuit. Since the stator winding is directly connected to the power grid, interference from the asymmetric power grid must be eliminated in ord...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/22/7516 |
| _version_ | 1797459446092267520 |
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| author | Wei Ding Yulong Jin Xijin Wu Yufeng Yang Yongjiang Jiang |
| author_facet | Wei Ding Yulong Jin Xijin Wu Yufeng Yang Yongjiang Jiang |
| author_sort | Wei Ding |
| collection | DOAJ |
| description | The high resistance connection fault of the stator is a common fault in doubly fed induction generators, which causes a three-phase imbalance in the stator circuit. Since the stator winding is directly connected to the power grid, interference from the asymmetric power grid must be eliminated in order to achieve the accurate diagnosis of stator resistance imbalance faults. Therefore, a new diagnosis method based on filter shunt capacitor banks is proposed in this paper. By introducing shunt capacitor banks, an artificial neutral point is constructed to replace the neutral point of the power grid. Then, the neutral point voltage of the stator winding relative to the artificial neutral point is selected as a fault characteristic signal. In this paper, the change in three-phase stator currents after a high-resistance connection fault is analyzed in detail, and by comparing the fault characteristic signal with three-phase stator currents, the fault phase location and fault severity of high-resistance connection can be accurately obtained. Finally, simulations are carried out via the field-circuit coupling method to validate the effectiveness of the proposed method. |
| first_indexed | 2024-03-09T16:51:26Z |
| format | Article |
| id | doaj.art-1144cfab17d54338a0bcc10c00e480c4 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T16:51:26Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-1144cfab17d54338a0bcc10c00e480c42023-11-24T14:40:04ZengMDPI AGEnergies1996-10732023-11-011622751610.3390/en16227516High-Resistance Connection Diagnosis of Doubly Fed Induction GeneratorsWei Ding0Yulong Jin1Xijin Wu2Yufeng Yang3Yongjiang Jiang4NARI Group Corporation, State Grid Electric Power Research Institute, Nanjing 211106, ChinaNARI Group Corporation, State Grid Electric Power Research Institute, Nanjing 211106, ChinaNARI Group Corporation, State Grid Electric Power Research Institute, Nanjing 211106, ChinaNARI Group Corporation, State Grid Electric Power Research Institute, Nanjing 211106, ChinaCollege of Automation & College of Artificial Intelligence, Nanjing University of Posts and Telecommunications, Nanjing 210023, ChinaThe high resistance connection fault of the stator is a common fault in doubly fed induction generators, which causes a three-phase imbalance in the stator circuit. Since the stator winding is directly connected to the power grid, interference from the asymmetric power grid must be eliminated in order to achieve the accurate diagnosis of stator resistance imbalance faults. Therefore, a new diagnosis method based on filter shunt capacitor banks is proposed in this paper. By introducing shunt capacitor banks, an artificial neutral point is constructed to replace the neutral point of the power grid. Then, the neutral point voltage of the stator winding relative to the artificial neutral point is selected as a fault characteristic signal. In this paper, the change in three-phase stator currents after a high-resistance connection fault is analyzed in detail, and by comparing the fault characteristic signal with three-phase stator currents, the fault phase location and fault severity of high-resistance connection can be accurately obtained. Finally, simulations are carried out via the field-circuit coupling method to validate the effectiveness of the proposed method.https://www.mdpi.com/1996-1073/16/22/7516doubly fed induction generatorfault diagnosishigh-resistance connectionneutral point voltageshunt capacitor banks |
| spellingShingle | Wei Ding Yulong Jin Xijin Wu Yufeng Yang Yongjiang Jiang High-Resistance Connection Diagnosis of Doubly Fed Induction Generators Energies doubly fed induction generator fault diagnosis high-resistance connection neutral point voltage shunt capacitor banks |
| title | High-Resistance Connection Diagnosis of Doubly Fed Induction Generators |
| title_full | High-Resistance Connection Diagnosis of Doubly Fed Induction Generators |
| title_fullStr | High-Resistance Connection Diagnosis of Doubly Fed Induction Generators |
| title_full_unstemmed | High-Resistance Connection Diagnosis of Doubly Fed Induction Generators |
| title_short | High-Resistance Connection Diagnosis of Doubly Fed Induction Generators |
| title_sort | high resistance connection diagnosis of doubly fed induction generators |
| topic | doubly fed induction generator fault diagnosis high-resistance connection neutral point voltage shunt capacitor banks |
| url | https://www.mdpi.com/1996-1073/16/22/7516 |
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