摘要:本次的设计对象是对110Kv牵引变电站的继电保护设计。在牵引供电系统中，牵引变电站占有非常重要的地位，它能否在电气化铁道中正常运行非常重要。但是，由于我国的技术水平不高，牵引供电系统相对来说比较落后，因此，对牵引供电系统继电保护的继续改进有重大的意义。本论文的设计目的是为了将自己所学的专业知识运用到实际生活中。同时增强自己的学识与自学能力并对铁路牵引变电站继电保护设计的基本方法有所了解。本设计是通过自学牵引变电站的相关知识，以及运用了以往学过的相关专业知识，最终完成了110Kv牵引变电站继电保护的设计。

关键词：继电保护；短路计算；整定计算

ABSTRACT:The object of this design is relay protection design of 110Kv traction substation. However, the sustained, stable development of our country’s economy cries for the stronger and the higher safe reliability of transport capacity of electrification railway system. Traction substation whose safe operation is the precondition of electrification railway system having normal and stable work is the fatal electrical equipment of attractive power supply system. Our traction substation’s secondary system is relatively backward; therefore, it has positive meaning that proceeding propels electrification railway relay protection design on the basis of predecessors. The design objective of this thesis is putting what I have learned to use, expending knowledge, the capability of self-learning and realizing the basic methods of electrification railway relay protection design. The design is achieved by learning the relevant knowledge of traction substation and applying already learned knowledge. 

Key words: relay protection; short circuit calculation; setting calculation