【摘要】 介绍了近十多年来国内外学者提出的判别变压器励磁涌流的原理和方法，并对各种方案进行了分析和评价；讨论了用微机实现间断角原理的变压器保护的关键问题以及二次谐波原理所面临的几个主要困难；最后对各种判别变压器励磁涌流的方法之间的内在联系作了简要分析。更多还原

【Abstract】 This paper analyses some typical methods for checking magnetizing surge in powertransformer,These methods are classified as 3 catalogs based on the different electrical variablesused.Evaluation and prospect of the methods are discussed. Differences and relations amongthese methods are also expounded.更多还原