南方电网技术2025，Vol.19Issue(5)：146-154,9.DOI:10.13648/j.cnki.issn1674-0629.2025.05.015
基于Ansys Maxwell的变压器零序阻抗计算
Transformer Zero-Sequence Impedance Calculation Based on Ansys Maxwell
摘要
Abstract
The zero-sequence impedance or impedances of the transformers is an important basis for the selection and setting value calculation of relay protection components,and is an important parameter of power systems.It can be used to accurately calculate the zero-sequence component of short-circuit current in power system accident states.The zero-sequence impedance of transformers is mainly affected by the structure of the iron core and the connection group of the windings.Analytical methods are difficult to ac-curately calculate the zero-sequence impedance,while finite element methods can better solve this problem.Taking YNyn0d11 3-phase 3-leg transformer as the research object,a finite element field circuit coupling calculation model for zero-sequence impedance is established in Ansys Maxwell,and three calculation methods for zero sequence impedance are studied:energy method,volt-ampere method,and inductance matrix method.Based on the above model,the influence of fuel tank and magnetic shielding modeling methods on the accuracy of zero sequence impedance calculation is studied.The error between the calculation results and the transformer test data is within 5%,which meets the engineering calculation accuracy requirements and verifies the effectiveness of the three proposed calculation methods.关键词
变压器/零序阻抗/有限元/场路耦合Key words
transformer/zero-sequence impedance/finite element/field circuit coupled分类
信息技术与安全科学引用本文复制引用
黄克捷,刘君,徐舒蓉,陈沛龙,曾华荣,李堃,袁耀,黎文浩..基于Ansys Maxwell的变压器零序阻抗计算[J].南方电网技术,2025,19(5):146-154,9.基金项目
广东省重点领域研发计划资助项目(2021B0101190003) （2021B0101190003）
中国南方电网有限责任公司科技项目(GZKJXM20222296).Supported by the Key-Area Research and Develop-ment Program of Guangdong Province(2021B0101190003) （GZKJXM20222296）
the Science and Technology Projects of China Southern Power Grid Co.,Ltd.(GZKJXM20222296). （GZKJXM20222296）
