Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit
This paper investigates the radial stator vibration characteristics of turbogenerator under the static air-gap eccentricity (SAGE) fault, the rotor interturn short circuit (RISC) fault, and the composite faults (CFs) composed of SAGE and RISC, respectively. Firstly, the impact of the faulty types on...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/5971081 |
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| author | Yu-Ling He Wei-Qi Deng Bo Peng Meng-Qiang Ke Gui-Ji Tang Shu-Ting Wan Xiang-Yu Liu |
| author_facet | Yu-Ling He Wei-Qi Deng Bo Peng Meng-Qiang Ke Gui-Ji Tang Shu-Ting Wan Xiang-Yu Liu |
| author_sort | Yu-Ling He |
| collection | DOAJ |
| description | This paper investigates the radial stator vibration characteristics of turbogenerator under the static air-gap eccentricity (SAGE) fault, the rotor interturn short circuit (RISC) fault, and the composite faults (CFs) composed of SAGE and RISC, respectively. Firstly, the impact of the faulty types on the magnetic flux density (MFD) is analyzed, based on which the detailed expressions of the magnetic pull per unit area (MPPUA) on the stator under different performing conditions are deduced. Then, numerical FEM simulations based on Ansoft and an experimental study are carried out, taking the SDF-9 type fault simulating generator as the study object. It is shown that SAGE will increase the stator vibration at 2f (f is the electrical frequency) which already exists even in normal condition, while RISC and CF will bring in stator vibrations at f, 2f, 3f, and 4f at the same time. The vibration amplitudes under CF are larger than those under RISC. As SAGE increases, the vibration amplitudes of each harmonic component under CF will all be increased, while the development of RISC will decrease the 2nd harmonic vibration but meanwhile increase the 4th harmonic vibration. The achievements of this paper are beneficial for fault identification and condition monitoring of the turbogenerator. |
| format | Article |
| id | doaj-art-9cddb4c6bd4e40d0bca323f5034e0280 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-9cddb4c6bd4e40d0bca323f5034e02802025-02-03T05:44:14ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/59710815971081Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short CircuitYu-Ling He0Wei-Qi Deng1Bo Peng2Meng-Qiang Ke3Gui-Ji Tang4Shu-Ting Wan5Xiang-Yu Liu6Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, ChinaDepartment of Mechanical Engineering, North China Electric Power University, Baoding 071003, ChinaDepartment of Mechanical Engineering, North China Electric Power University, Baoding 071003, ChinaDepartment of Mechanical Engineering, North China Electric Power University, Baoding 071003, ChinaDepartment of Mechanical Engineering, North China Electric Power University, Baoding 071003, ChinaDepartment of Mechanical Engineering, North China Electric Power University, Baoding 071003, ChinaState Grid Hebei Electric Power Research Institute, Shijiazhuang 050021, ChinaThis paper investigates the radial stator vibration characteristics of turbogenerator under the static air-gap eccentricity (SAGE) fault, the rotor interturn short circuit (RISC) fault, and the composite faults (CFs) composed of SAGE and RISC, respectively. Firstly, the impact of the faulty types on the magnetic flux density (MFD) is analyzed, based on which the detailed expressions of the magnetic pull per unit area (MPPUA) on the stator under different performing conditions are deduced. Then, numerical FEM simulations based on Ansoft and an experimental study are carried out, taking the SDF-9 type fault simulating generator as the study object. It is shown that SAGE will increase the stator vibration at 2f (f is the electrical frequency) which already exists even in normal condition, while RISC and CF will bring in stator vibrations at f, 2f, 3f, and 4f at the same time. The vibration amplitudes under CF are larger than those under RISC. As SAGE increases, the vibration amplitudes of each harmonic component under CF will all be increased, while the development of RISC will decrease the 2nd harmonic vibration but meanwhile increase the 4th harmonic vibration. The achievements of this paper are beneficial for fault identification and condition monitoring of the turbogenerator.http://dx.doi.org/10.1155/2016/5971081 |
| spellingShingle | Yu-Ling He Wei-Qi Deng Bo Peng Meng-Qiang Ke Gui-Ji Tang Shu-Ting Wan Xiang-Yu Liu Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit Shock and Vibration |
| title | Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit |
| title_full | Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit |
| title_fullStr | Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit |
| title_full_unstemmed | Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit |
| title_short | Stator Vibration Characteristic Identification of Turbogenerator among Single and Composite Faults Composed of Static Air-Gap Eccentricity and Rotor Interturn Short Circuit |
| title_sort | stator vibration characteristic identification of turbogenerator among single and composite faults composed of static air gap eccentricity and rotor interturn short circuit |
| url | http://dx.doi.org/10.1155/2016/5971081 |
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