the sympathetic inrush may occur in the system transformer when no-load electric locomotive or traction transformer is switched, so the protection may be affected.
通过分析发现电力机车空载启动和牵引变空载合闸都会在系统变压器中造成和应涌流。
by analyzing a case in practice, this paper discusses the mechanism of sympathetic inrush and the relationship between sympathetic inrush and transient saturation in transformer.