A Methodology to Evaluate the Radial Bending Stress of Transformer Inner Windings Based on the Turn-to-Turn Model

IF 1.7 3区 物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Xiongbo Wang;Yan Li;Zhanyang Yu;Peng Li;Zhengyu Xu
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引用次数: 0

Abstract

The considerable size and intricacy of high-power transformers frequently lead to inefficiency in finite element simulation analysis. To promptly and accurately estimate the stress state of the winding, this paper presents a theoretical approach to analyze the bending stress for each conductor in the inner winding of the transformer. Firstly, this approach takes into account the influences of conductor leakage flux and radial force as they vary with the radial position of the conductor. Subsequently, a 40000 kVA/110 kV transformer is adopted as a prototype, and the turn-to-turn winding model is constructed. The proposed analytical model is verified using 3D finite element method (FEM) simulations. Finally, a leakage flux test was conducted on the prototype, and the simulation and experimental results confirmed the validity of the proposed method.
基于匝间模型的变压器内绕组径向弯曲应力评估方法
大功率变压器体积庞大、结构复杂,经常导致有限元仿真分析效率低下。为了及时准确地估计绕组的应力状态,本文提出了一种分析变压器内部绕组中各导体弯曲应力的理论方法。首先,该方法考虑了导体漏磁通和径向力的影响,因为它们随导体径向位置的变化而变化。随后,以 40000 kVA/110 kV 变压器为原型,构建了匝间绕组模型。利用三维有限元法(FEM)模拟验证了所提出的分析模型。最后,对原型进行了漏磁通测试,模拟和实验结果证实了所提方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
IEEE Transactions on Applied Superconductivity
IEEE Transactions on Applied Superconductivity 工程技术-工程:电子与电气
CiteScore
3.50
自引率
33.30%
发文量
650
审稿时长
2.3 months
期刊介绍: IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.
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