电力变压器主绝缘电场的数值分析

摘要

在分析电力变压器结构特点的基础上，对典型产品建立了主绝缘电场计算模型，利用有限元计算软件进行了数值计算，并对影响绕组端部电场的因素进行了分析，由此得到了主绝缘电场的分布、最大电场强度及其发生部位。通过对两类软件计算结果的比较及产品的各项绝缘试验，相互检验了计算方法与软件结果的合理性，为电力变压器的绝缘设计提供了有效的分析方法。%On the basis of analyzing the characteristics and the structure for a power transformer, the calculation model of main insulation electric field (EF) is established. Then, the numerical calculation and influencing factors analysis of the winding end electric field are done by using finite element calculation software. Thus the distribution of main insulation electric field and maximum electric field stress are obtained respectively. Through the comparison of calculation results and the insulation tests of products, the rationality of the calculation methods is examined mutually. Therefore, an efficient analysis method is provided for the insulation design of power transformer.