XU Yan,WANG Zengping,YANG Qixun,et al.Research on novel transformer protection based on the ratio of voltage and fluxional differential current.Automation of Electric Power Systems,2003,27(23):56-62.

• [2]徐岩；王增平；杨奇逊；等.；基于电压与电流微分比值原理的新型变压器保护