Analytic formulation for the calculation of leakage reactance in wound-core transformers

Author:

Castañeda Hernandez Russby Liliana1,Diaz Florez Guillermo Andres1,Perez Gelves Jhon Jairo1,Mombello Enrique Esteban2

Affiliation:

1. Electrical Engineering Department, Universidad de la Salle, , Colombia

2. CONICET - Universidad Nacional de San Juan, , Argentina

Abstract

Wound-core transformers are characterized by their economical and efficient design and are therefore widely used in power distribution systems; for this reason it is of paramount importance to determine their electrical characteristics. One of the most important parameters in these transformers is leakage reactance, since this is what largely determines short-circuit currents and voltage regulation. And yet the authors have found a conspicuous gap in the scientific literature concerning analytical formulations for the calculation of leakage reactance in wound-core transformers. In order to fill this gap, the authors propose a formula in terms of leakage areas and the Rogowski’s height of the windings. A geometric model of the active part of the transformer is proposed which allows for the exact calculation of the leakage areas. The results of the proposed formula are compared with simulations with the finite element method in 3D (FEM3D) and with measurements in eight real case studies. It is concluded that although the FEM3D calculates the closest results to measurements, the proposed formula reported sufficiently accurate results for transformer design purposes.

Publisher

IOS Press

Subject

Electrical and Electronic Engineering,Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,Electronic, Optical and Magnetic Materials

Reference20 articles.

1. IEEE C57.12.00, IEEE standard for general requirements for liquid-immersed distribution, power, and regulating transformers;Standard;Institute of Electrical and Electronics Engineers (IEEE)

2. A novel transformer with adjustable leakage inductance;Deng;International Journal of Applied Electromagnetics and Mechanics,2017

3. Comparison of four methods for computing positive-sequence reactances of three-phase core-type transformers;Sorrentino;IET Generation, Transmission Distribution,2014

4. Novel technique to compute the leakage reactance of three-phase power transformers;Hernandez;IEEE Transactions on Power Delivery,2016

5. Novel analytical formulas for eddy-current losses in semicircle-section wound core of transformer;Zhang;IEEE Transactions on Magnetics,2019

Cited by 9 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3