变压器冲击电压分布计算在纵绝缘设计中的应用  

Impulse Voltage Distribution for Power Transformer Applied in the Optimal Design of Winding Insulation

作　　者：李道明 曲渝 

机构地区：[1]中南输变电设备成套有限公司,河南郑州450004 [2]河南省电影电视学校,河南郑州450003

出　　处：《郑州大学学报（工学版）》2003年第4期28-31,共4页Journal of Zhengzhou University（Engineering Science）

摘　　要：要使电力变压器能够安全、可靠地运行,合理设计变压器内部绝缘结构至关重要,特别是变压器线圈的绝缘必须能可靠地承受住大气过电压、长期工作电压、操作过电压和暂态过电压的作用.分析了变压器线圈在遭受到冲击电压时产生电磁振荡过电压和感应过电压的原因,对电力变压器波过程进行计算与仿真,运用波过程计算软件进行变压器绝缘结构设计,最后指出波过程计算是变压器纵绝缘设计的重要依据.In order to guarantee the safe and reliable operation of power transformers, the reasonable design of the insulation structure inside them is very important, especially the winding insulation of transformer coil should be able to bear various overvoltages such as lighting overvoltage, long-term operating voltage, switching overvoltage and transient overvoltage.The mechanism of oscillation overvoltage and induction overvoltage produced in transformer windings under impulse voltage conditions, the principle of the simulation of impulse voltage distribution in transformer windings, and the experience of winding insulation design using the simulation software are theoretically summarized. It is pointed out that the simulation of impulse voltage distribution plays an important role in the design of power transformer.

关 键 词：电力变压器 冲击电压分布 电磁振荡 电磁感应 纵绝缘设计 电力网 

分 类 号：TM71[电气工程—电力系统及自动化] TM41