| 超高压电力变压器绝缘计算 |
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| 引用本文： | 刘建军. 超高压电力变压器绝缘计算[J]. 电气技术, 2008, 0(8): 43-46 |
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| 作者姓名： | 刘建军 |
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| 作者单位： | 辽宁铁道职业技术学院,辽宁,锦州,121000 |
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| 摘 要： | 本文对SFP400000/500超高压电力变压器的绝缘进行了仿真计算.对主绝缘电场的计算应用有限元法,计算时将主绝缘电场场域划分为三个子区域,得出了各区域中的电位分布和电场强度分布,并计算了相关的绝缘裕度,找出了绝缘的薄弱环节.对纵绝缘电场,建立了绕组在雷电过电压下的电路模型,分别计算了高、低压绕组在全波和截波作用下的电位分布和梯度分布,确定了梯度最大的油道,并计算了相应油道在的全波和截波下的绝缘裕度,为变压器绝缘设计和改进提供了理论上的参考依据.
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| 关 键 词： | 变压器 主绝缘 电场强度 纵绝缘 绝缘裕度 |
Calculation of the Insulation in a Extra-high Voltag Power Transformer |
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| Liu Jianjun. Calculation of the Insulation in a Extra-high Voltag Power Transformer[J]. Electrical Engineering, 2008, 0(8): 43-46 |
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| Authors: | Liu Jianjun |
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| Abstract: | In this paper,the insulation electric field in a SFP400000/500 extra-high voltag power transformer is calculated simulately. The main insulation electric field is calculated with finite element method. the main insulation electric field area is divided into three sub-regions to calculation. The distributions of electric potential and the electric field intensity in different regions are obtained. calculated the electric field insulation margin of related parts. For the longitudinal insulation electric field, established circuit model of winding under the action of thunder lightning extra-high voltag, calculated the insulation margin of corresponding oil road under the action of full wave and chopped wave, and provided the theoretical reference basis for the insulation design and improvement. |
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| Keywords: | transformer main insulation electric field intensity longitudinal insulation insulation margin |
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