| 特高压变压器线圈的电场计算与分析 |
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| 引用本文： | 吕殿利,汪友华,韩婷彦,王建民,颜威利. 特高压变压器线圈的电场计算与分析[J]. 河北大学学报(自然科学版), 2011, 31(2): 144-149 |
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| 作者姓名： | 吕殿利 汪友华 韩婷彦 王建民 颜威利 |
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| 作者单位： | 1. 河北工业大学,电磁场与电器可靠性省部共建国家重点实验室培育基地,天津,300130
2. 天威保变电气股份有限公司,河北,保定,071051 |
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| 基金项目： | 河北省自然科学基金资助重大项目 |
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| 摘 要： | 为了分析特高压变压器线圈周围的电场,建立了变压器高压线圈、均压管和均压球的三维实体模型.根据线圈的轴对称结构的特点,取1/4线圈进行计算.对于中部的线圈和均压管,采用二维有限元的方法,计算出电场的分布,并求出最大电场强度值.推导了多层油纸绝缘结构等效为单一介质时等效介电常数的计算公式.利用等效介电常数把线圈外的油纸绝缘...
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| 关 键 词： | 特高压变压器 电场分析 有限元 三维计算 线圈 |
Electrical Field Calculation and Analysis of the Ultra-high Voltage Transformer Coil |
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| L Dian-li,WANG You-hua,HAN Ting-yan,WANG Jian-min,YAN Wei-li. Electrical Field Calculation and Analysis of the Ultra-high Voltage Transformer Coil[J]. Journal of Hebei University (Natural Science Edition), 2011, 31(2): 144-149 |
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| Authors: | L Dian-li WANG You-hua HAN Ting-yan WANG Jian-min YAN Wei-li |
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| Affiliation: | L(U) Dian-li,WANG You-hua,HAN Ting-yan,WANG Jian-min,YAN Wei-li |
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| Abstract: | The 3-dimensional solid model was built for the high voltage coil,the equipotential shielding and the bushing end of the ultra-high voltage transformer.In view of the symmetrical structure of the coil,the electric field calculation was carried on a quarter of the solid model.For the middle part of the model,2-dimensional finite element method was employed to calculate the electrical field distribution and the maximum electrical field was found.The equivalent dielectric constant of the multi-layer oil-paper insulation was deduced when it was considered as an isotropic medium.The 3-D solid model was properly simplified and the electric field intensity was calculated.The maximum electrical field intensity and its location at the top part of the coil as well as the bottom part were found respectively. |
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| Keywords: | ultra-high voltage transformer electric field analysis finite element method 3-dimensional calculation coil |
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