【摘要】 在主变差动保护的实现中,需要根据变压器接线组别的不同进行相位校正,常用的校正方式有两种,对主变差动回路的差流构成影响.对常见差动保护范围内各种横向短路故障情况下的差流进行对比分析,具体量化地揭示了两种相位校正方式对差流的影响,对差动保护算法中相位校正方式的认识有明确而有益的指导作用.更多还原

【Abstract】 In the course of transformer differential protection, phase corrections should be made according to different transformer wiring groups. There are two commonly-used methods for phase correction, which exert impacts on differential current of main differential circuits. This paper analyzes and compares differential currents when there are horizontal short circuits within the range of differential protection. The quantitative comparison shows the impacts of the two methods on differential currents and that the methods have valuable and directive influence on understanding the phase correction methods of differential protection algorithms.更多还原