静电场边值问题的一个教学案例

A Case for Lecture on Boundary Value Problem of Electrostatic Field

本文提供了笔者在"电磁场"课程讨论课上使用的一个教学案例,该案例以三相电力汇流排为对象,讨论如何建立静电场边值问题。课堂讨论表明,该案例不仅提高了学生对第一类边界条件、第二类边界条件、电位悬浮导体边界条件等静电场边值问题的数学抽象能力,还扩展了学生对介质极化、多导体部分电容等概念的应用能力。

A case for lecture on boundary value problem of electrostatic field,which is used in discussion lesson of Electromagnetic Fields course,is given in this paper.A three-phase power bus is selected as an example in this case to discuss how to set its boundary value problem of electrostatic field.The discussion lesson shows that students′ abilities are increased and expanded not only on Abstraction and simplification of the boundary value problems of electrostatic field with the first kind,second kind and potential floating conductor boundary conditions but also on application of basic concepts about polarization of dielectrics and partial capacitance etc.