V/V接线铁路牵引变压器供电线路距离保护定值整定探讨

Discussion on Distance Protection Setting of V/V Connection RailwayTransformer

通过建立V/V接线牵引变压器的供电系统模型,全面分析、推导了在牵引变压器低压侧故障时供电线路侧距离保护的测量阻抗,并提出了V/V接线牵引变压器供电线路距离阻抗保护的整定原则。

The model of V/V connection traction transformer power supply system is developed. The measurement impendence of distance protection at power line side during the low voltage side fault of traction transformer is analyzed and deduced. The setting principle of distance impendence protection of V/V connection traction transformer power line is proposed.