Effect of Multiple Reclosing Time Intervals on Axial Vibration of Winding
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Published:2023-10-31
Issue:21
Volume:13
Page:11910
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ISSN:2076-3417
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Container-title:Applied Sciences
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language:en
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Short-container-title:Applied Sciences
Author:
Sun Lu1, Gao Shuguo1, Tian Yuan1, He Ruidong2, Teng Fuyun3, Wang Liang3, Geng Jianghai3, Wang Ping3, Wang Xinyu3, Zhang Zikang3, Zhu Jianhao3, Yao Jiaxin3, Yao Yufei3
Affiliation:
1. Hebei Electric Power Research Institute, Shijiazhuang 050021, China 2. State Grid Hebei Electric Power Co., Ltd., Shijiazhuang 050057, China 3. Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071003, China
Abstract
When a transformer suffers a permanent fault, it will suffer a short-circuit impulse again after reclosing. If the previous vibration of the winding is not attenuated completely and the winding is subjected to a secondary impulse within a short time, the secondary vibration response will have a superposition. The aim of this study was to analyze the effect of the anti-short-circuit ability of operational transformers subjected to a secondary short-circuit current impulse. In this paper, a model is established for calculating axial vibration in transformer windings and effects on the vibration response of windings under different closing phase angles and short-circuit intervals are analyzed. The results show that the vibration acceleration of windings is a V-shaped variation at phase angles from 0° to 180°, reaching the maximum values at 0° and 180° and reaching the minimum value at 90°. When the transformer recloses on a permanent short circuit, due to the superposition effect, the vibration acceleration amplitude of the secondary impulse will be greater than that of the primary impulse, but as the reclosing interval increases, the superposition effect decreases continuously. When the interval is 600 ms, the superposition effect for the vibration acceleration of the secondary impulse attenuates to 83.3%. The superposition effect is not significant after 600 ms. The research provides a theoretical reference for transformer closing-control strategies.
Funder
Science and Technology Project of State Grid Hebei Electric Power Natural Science Foundation of Hebei Province
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference30 articles.
1. Zhu, N., Li, J., Shao, L., Liu, H., Ren, L., and Zhu, L. (2023). Analysis of Interturn Faults on Transformer Based on Electromagnetic-Mechanical Coupling. Energies, 16. 2. Transformer fault condition prognosis using vibration signals over cloud environment;Bagheri;IEEE Access,2018 3. Wanchao, W. (2017). Research on Mechanical Strength and Stability of Transformer Windings under Multiple Short-Circuit Conditions. [Ph.D. Thesis, Shenyang University of Technology]. 4. Evaluation Method and Test Analysis of Accumulation Effect of Transformer Short-circuit;Sun;Guangdong Electr. Power,2019 5. Akre, S., Fofana, I., Yéo, Z., Brettschneider, S., Kung, P., and Sékongo, B. (2023). On the Feasibility of Monitoring Power Transformer’s Winding Vibration and Temperature along with Moisture in Oil Using Optical Sensors. Sensors, 23.
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