The gradient voltage of electric power transformer under the action of lightning is analysed,and it is pointed out that theoretical analysis can only discover its regularity,and the structural data of longitudinal insulation of an actual coil should be checked and verified against experimental results.
分析了电力变压器在雷电作用下的梯度电压,指出理论分析只能得到其规律性,实际线圈纵绝缘结构数据还应以实验校核。
For the longitudinal insulation electric field.
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。
A study presented here is carried out to establish an optimal mathematical model for graded insulation design of the large power transformer.
针对电力变压器纵绝缘结构优化设计 ,建立了纵绝缘结构优化设计数学模型 ,并借助遗传算法这一智能计算工具对连续—内屏蔽式变压器的纵绝缘分区结构设计进行了优化 ,取得了令人满意的结
2 generator stator, the paper describes how, with the external electric potential testing method, manually wound insulations could be checked for faults and how latent insulation faults of the generator stator were handled and cleared away.
简述梅县发电厂 2号发电机定子端部手包绝缘存在的缺陷 ,用电位外移测量法可检查出发电机定子端部不合格的手包绝缘 ,从而消除发电机定子端部绝缘隐患。