在介绍对称分量法基本概念的基础上,重点从主变压器接线形式、剩余电流保护装置和绝缘监视3个方面剖析了零序分量的实际应用。给出了规范依据,剖析了深层的原因,而且列举出大量的实例。实践教学证明,抽象理论的应用化、案例化讲解方法很好地激发了学生学习的兴趣,明显提高了教学效果。%Introducing the symmetrical components method, the practical application of zero-sequence component are deeply analyzed focusing on three aspects, that is, the main transformer connection form, residual current protection devices and insulation monitoring. In this paper, the specifications are not only given out, the underlying reasons are also analyzed and a large number of instances are listed. Practical teaching prove that the explaining approach putting abstract theory in use and citing many cases well stimulate students to learn, and markedly increase the effectiveness of teaching.
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