牵引变电所馈线保护装置拒动事件分析

摘要

The paper analyses a leapfrog tripping event of main transformer backup protection for the feeder protection refusing operation in the traction substation.The paper points out the reasons of the feeder refusing operation of Over-current protection,High-impedance segment I protection and impedance protection,and puts forward the appropriate countermeasures.%对牵引变电所一次因馈线保护装置拒动导致的主变压器后备保护越级跳闸事件做了全面分析,给出了馈线过电流、高阻I段、阻抗保护装置均未动作的原因,提出了运行改进措施。