摘要
通过对地场广义Sommerfeld积分 (GSI)的积分核采用多重复镜像等效 ,导出了准静场条件下地下直埋有限长导体感应电场强度和互阻抗的解析计算公式。公式推导过程中 ,先将地场GSI的远谱分量提出 ,再对中近谱分量采用矩阵束方法 (Matrixpencilmethod)精确逼近。计算结果表明 ,该公式有相当好的计算精度 。
The analytical formulas of the inductive electric intensity and the mutual impedance of underground buried conductors are presented under the condition of the quasi static field, which is by means of the complex multi image approximation of the generalized Sommerfeld integral (GSI) in the earth field. The method can be divided into two steps: ①extracting the far component of the spectral domain integration; ②approaching the medium and near component by the matrix pencil method precisely. It is shown, by the numerical results, that the formulas herein are highly accurate and can be applied in the inductive coupling analysis and the electromagnetic transient calculation of underground buried conductors.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2001年第12期115-118,共4页
Proceedings of the CSEE
关键词
感应电场强度
互阻抗
计算
导体
underground buried conductor
complex multi images
inductive electric intensity
mutual impedance
