变压器差动保护误动的原因分析及防范对策

Analysis of misoperation of transformer differential protection and precautionary measures

从变压器差动保护的原理构成及接线规定入手,分析了四个方面变压器差动保护误动的原因。利用向量分析法对流变二次回路极性错误及流变二次回路开路情况进行了剖析,提出七点防范措施,为提高变压器差动保护可靠运行提供分析依据。

The vector analysis method is used to analyze the polarity error of the rheological secondary circuit and the open circuit of the rheological secondary circuit. Preventive measures are proposed to provide analysis basis for improving the reliable operation of transformer differential protection.