电力变压器励磁涌流与内部短路电流识别原理研究

在电力变压器差动保护中,励磁涌流与内部故障电流的判别一直是一个关键问题,文中针对目前国内外学者提出的励磁涌流识别原理和方法、技术关键及研究和应用现状进行了分析和与客观评价。并对目前现场采用的方法和一些现代智能理论鉴别中的应用进行了比较,提出了变压器励磁涌流在鉴别方法的研究和应用动向。

Study on Distinguishing Excitation Inrush Current fron Internal Fault Current in Power Transformer

Distinguishing excitation inrush current from the internal fault carrent in power transformer has been being a key problem of power transformer differential protection.In this paper,several methods distinguishing inrush current are analyzed and evaluated,such as their principles,the situation on their studies and applications,etc.Furthermore,the present methods used for distinguishing excitation inrush current from internal fault current are compared through extensive studies,and the trend of relative developing is prospected.