不同纳秒脉宽电压下变压器绕组电压分布研究  

The Research of Transformer Impulse Voltage Distribution Based on Different Nanosecond Pulse Width Voltage

作　　者：伏进[1] 陈勇[2] 毕茂强[1] 王谦[1] 韩睿[2] 赵洪彬 

机构地区：[1]国网重庆市电力公司电力科学研究院,重庆401123 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《科学技术与工程》2016年第17期56-61,共6页Science Technology and Engineering

摘　　要：为研究快速暂态过电压(VFTO)、雷电波进入变压器引起高压绕组电压分布的规律,进行了不同纳秒脉冲宽度电压下绕组电压分布研究。基于一台带抽头的10 k VA-220 V/2 400 V变压器,搭建试验平台,测量和分析了不同脉宽电压下的绕组电压分布;基于COMSOL Multiphysics有限元软件计算了绕组电容参数矩阵并建立多导体传输线模型(MTLs),仿真计算了绕组电压分布;使用MTLs仿真计算和试验测量得到的绕组电压分布具有很好的一致性。深入分析得出:除波头时间外,脉冲宽度是影响绕组电压分布的重要原因,电压脉冲宽度越小,绕组电压分布越不均匀。For the study of high voltage transformer winding voltage distribution regularity caused by lightening wave and fast transient overvoltage（ VFTO）,the winding voltage distribution under different voltage nanosecond pulse width was researched. Based on a tapped 10 k VA-220 V /2 400 V transformer,test platform is constructed,measurement and analysis winding voltage distribution under different pulse width voltage. Based on the COMSOL Multiphysics finite element software to calculate the winding capacitance parameter and multi conductor transmission lines（ MTLs） model is established. Multi conductor transmission line model of winding voltage distribution and test voltage distribution are good consistency. It is concluded that： the pulse width is important factor affecting the distribution of winding voltage. Voltage pulse width is smaller,the winding voltage distribution is uneven.

关 键 词：变压器 电压分布 有限元 多导体传输线 

分 类 号：TM431[电气工程—电器]