Transformer winding condition detection based on the nonlinear characteristics of vibrations
Power transformers are critical devices in power grid systems, with windings as their core components. To perform state detection on online windings, this paper establishes a nonlinear model between vibration amplitude and current based on the relationship between winding structural parameters and l...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Power Engineering Technology
2024-11-01
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| Series: | 电力工程技术 |
| Subjects: | |
| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/240105022 |
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| _version_ | 1846141482242670592 |
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| author | QIAN Guochao HU Jin DAI Weiju WANG Haozhou ZHAO Hanwu HONG Kaixing |
| author_facet | QIAN Guochao HU Jin DAI Weiju WANG Haozhou ZHAO Hanwu HONG Kaixing |
| author_sort | QIAN Guochao |
| collection | DOAJ |
| description | Power transformers are critical devices in power grid systems, with windings as their core components. To perform state detection on online windings, this paper establishes a nonlinear model between vibration amplitude and current based on the relationship between winding structural parameters and load variations. The numerical relationship between structural stiffness and model parameters is proved, and a winding clamping force evaluation method based on the nonlinear characteristics of vibrations is proposed. In the experiment, the relationship between current and vibration amplitude is obtained by adjusting the axial clamping force of windings and performing short-circuit load tests. The experimental results show that the nonlinear characteristics of vibrations are significant when the winding clamping force is small, and the characteristic parameter C3 accurately reflects the equivalent stiffness change of the winding structure. In practical applications, the vibration characteristics of oil tank surface corresponding to normal windings and loose windings are compared, and the results are presented in the form of two-dimensional contour plot. The results indicate that the vibration characteristics of the tank reflect the structural state of the winding near the measurement point. The above results demonstrate that the parameter C3 is a monotonic function of clamping force, and there is structural degradation in the winding when this value is greater than 0.5. |
| format | Article |
| id | doaj-art-d2c6c0a36eb149f58340f7d8308bfe2e |
| institution | Kabale University |
| issn | 2096-3203 |
| language | zho |
| publishDate | 2024-11-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj-art-d2c6c0a36eb149f58340f7d8308bfe2e2024-12-04T09:14:50ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032024-11-0143619420210.12158/j.2096-3203.2024.06.019240105022Transformer winding condition detection based on the nonlinear characteristics of vibrationsQIAN Guochao0HU Jin1DAI Weiju2WANG Haozhou3ZHAO Hanwu4HONG Kaixing5Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaElectric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaElectric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaKunming Power Supply Bureau of Yunnan Power Grid Co., Ltd., Kunming 650299, ChinaElectric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaCollege of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, ChinaPower transformers are critical devices in power grid systems, with windings as their core components. To perform state detection on online windings, this paper establishes a nonlinear model between vibration amplitude and current based on the relationship between winding structural parameters and load variations. The numerical relationship between structural stiffness and model parameters is proved, and a winding clamping force evaluation method based on the nonlinear characteristics of vibrations is proposed. In the experiment, the relationship between current and vibration amplitude is obtained by adjusting the axial clamping force of windings and performing short-circuit load tests. The experimental results show that the nonlinear characteristics of vibrations are significant when the winding clamping force is small, and the characteristic parameter C3 accurately reflects the equivalent stiffness change of the winding structure. In practical applications, the vibration characteristics of oil tank surface corresponding to normal windings and loose windings are compared, and the results are presented in the form of two-dimensional contour plot. The results indicate that the vibration characteristics of the tank reflect the structural state of the winding near the measurement point. The above results demonstrate that the parameter C3 is a monotonic function of clamping force, and there is structural degradation in the winding when this value is greater than 0.5.https://www.epet-info.com/dlgcjsen/article/abstract/240105022transformer windingfault diagnosiselectric-vibration modelnonlinear characteristicsclamping force statevibration image |
| spellingShingle | QIAN Guochao HU Jin DAI Weiju WANG Haozhou ZHAO Hanwu HONG Kaixing Transformer winding condition detection based on the nonlinear characteristics of vibrations 电力工程技术 transformer winding fault diagnosis electric-vibration model nonlinear characteristics clamping force state vibration image |
| title | Transformer winding condition detection based on the nonlinear characteristics of vibrations |
| title_full | Transformer winding condition detection based on the nonlinear characteristics of vibrations |
| title_fullStr | Transformer winding condition detection based on the nonlinear characteristics of vibrations |
| title_full_unstemmed | Transformer winding condition detection based on the nonlinear characteristics of vibrations |
| title_short | Transformer winding condition detection based on the nonlinear characteristics of vibrations |
| title_sort | transformer winding condition detection based on the nonlinear characteristics of vibrations |
| topic | transformer winding fault diagnosis electric-vibration model nonlinear characteristics clamping force state vibration image |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/240105022 |
| work_keys_str_mv | AT qianguochao transformerwindingconditiondetectionbasedonthenonlinearcharacteristicsofvibrations AT hujin transformerwindingconditiondetectionbasedonthenonlinearcharacteristicsofvibrations AT daiweiju transformerwindingconditiondetectionbasedonthenonlinearcharacteristicsofvibrations AT wanghaozhou transformerwindingconditiondetectionbasedonthenonlinearcharacteristicsofvibrations AT zhaohanwu transformerwindingconditiondetectionbasedonthenonlinearcharacteristicsofvibrations AT hongkaixing transformerwindingconditiondetectionbasedonthenonlinearcharacteristicsofvibrations |