用于暂态分析的变压器线圈纵向等值电容的计算  

Calculation of Equivalent Series Capacitance for Transient Analysis in Large Power Transformer

作　　者：王赞基[1] 肖达川[1] 江缉光 

机构地区：[1]清华大学电机系

出　　处：《中国电机工程学报》1990年第2期60-65,共6页Proceedings of the CSEE

摘　　要：本文提出用阻抗等效的方法计算用于暂态分析的超高压变压器线圈纵向等值电容,这个方法在线圈单元以线匝为基本元件的意义上是精确的。本文还将此方法与能量等效方法进行了比较,指出了后者的局限性。本文所研究的方法适用于其他大型电力线圈。This paper presents a new method of computing the equivalent series capacitance of a unit coil for the trasient analysis in large power transformers. An equivalent network is worked out by the precise subdivison of the unit coil and the series capacitance C is calculated by assumming that the port impedance characteristic of the parallel connection of unit coil inductance L and series capacitance C is the same as that of the equivalent network. The proposed method is compared with the energy method in which the series capacitance is computed by summing electrostatically stored energy between turns and between pancakes of a unit coil and some limitations of that method is discussed in this paper.

关 键 词：变压器 线圈 暂态过程 电容 计算 

分 类 号：TM410.11[电气工程—电器]