{"title":"A Methodology to Evaluate the Radial Bending Stress of Transformer Inner Windings Based on the Turn-to-Turn Model","authors":"Xiongbo Wang;Yan Li;Zhanyang Yu;Peng Li;Zhengyu Xu","doi":"10.1109/TASC.2024.3469850","DOIUrl":null,"url":null,"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.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-4"},"PeriodicalIF":1.7000,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Applied Superconductivity","FirstCategoryId":"101","ListUrlMain":"https://ieeexplore.ieee.org/document/10705022/","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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.
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.