分析了地磁感应电流作用下的变压器直流偏磁情况及励磁电流各次谐波幅值、变压器无功损耗情况,并通过分析得出了变化规律。
The situations of transformer DC bias under geomagnetically induced current the harmonics amplitude of exciting current and the reactive loss of transformer are analyzed. The rules are presented with analysis method.