Resonance Analysis of Power Transformer Within Very Fast Transient Frequency Range

被引：0
|
作者：
Zheng Y. [1 ]
Yao H. [2 ]
He W. [1 ]
Qian P. [2 ]
Zhang F. [2 ]
Sun X. [1 ]
机构：
[1] Electric Power Research Institute of State Grid Zhejiang Electric Power Corporation, Hangzhou
[2] State Grid Zhejiang Electric Power Corporation, Hangzhou
来源：
Zheng, Yiming (yiming_zheng@yeah.net) | 2024年 / Science Press卷 / 43期
关键词：
High-frequency attenuation; Partial oscillation; Power transformers; Resonance analysis; Response factor; Very fast transient;
D O I：
10.13336/j.1003-6520.hve.20170527038
中图分类号：
学科分类号：
摘要：
In order to improve the voltage distribution in power transformer coil and enhance the insulation durability under very fast transient, the resonant features of power transformers within very fast transient frequency range are analyzed based on the improved transformer lumped model. The results show that the interleaved and improved interleaved discs at the top of the winding can reduce the maximum response factors effectively. Continuous segments are the weakest part of the winding where the most serious oscillations may possibly happen. The maximum oscillating voltage is observed at the upper half of the winding, and the position of maximum oscillation moves towards the top of the winding with the effective oscillating frequency getting higher. The research results indicate that the insulating properties near the input port should be more concerned when designing the power transformer. © 2017, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：2024 / 2032
页数：8
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