摘要
针对山区电气化铁路牵引供电臂处于长大坡道时牵引变压器严重过负荷的工况,在分析反时限原理、山区铁路的负荷特性及牵引变压器负荷曲线的基础上,对反时限过负荷保护时限进行了检算,并给出了满足山区铁路牵引变电所主变压器采用反时限过负荷保护的整定方法,得出非常反时限和超反时限均具有较好的适应性。
To meet the case of traction transformer severe overload when traction network is on long ramp, this paper analyzes the inverse time lag theory, mountain railway load charac- teristics ＆ main transformer load curve, and introduces the overload protection method of the mountain railway main transformer in the traction substation which uses the inverse time lag protection, very inverse time protection and ultra inverse time protection. And they both have better adaptabilities.
出处
《电力学报》
2013年第5期374-377,共4页
Journal of Electric Power
关键词
山区铁路牵引变电所
主变压器
反时限
过负荷保护
mountain railway traction substation
main transformer
inverse time lag
overload protection
