变压器差动保护相位补偿分析

Abstract

分析了接线双绕组变压器微机差动保护相位补偿采用角接与算法相位补偿关系,变压器差动保护内部两相短路故障灵敏度与相位补偿关系,得出无论变压器中性点是否接地,相位补偿选择低压侧的方案对差动保护灵敏度有利。

This paper analyzes the relationship between angle-connection phase compensation and the algorithm phase compensation using in the current phase compensation in differential protection forWiring two-winding transformer microcomputer,and the relationship between the two phase short circuit fault sensitivity and phase compensation in differential protection for transformer,and then concludes that whether the transformer neutral point grounds or not,phase compensation choosing the plan of low voltage is good for the differential protection sensitivity.