基于数字通信的城市轨道交通直流牵引供电系统双边联跳保护系统研究

Research on Double Jump Protection System for DC Traction Power Supply System of Urban Rail Transit Based on Digital Communication

本文研究了一种基于数字通信的城市轨道交通直流牵引供电系统的双边联跳保护系统,对应每一个牵引变电站均设有直流牵引保护测控装置、大双边联跳转换继电器和RS485转光纤转换器,建立直流牵引保护测控装置之间的通信回路,实现任意接触网区间的两条馈电线的故障信息交换。

This paper researches two way inner-tripping protection system based on digital communication for urban rail transit DC traction power supply system. Traction substations consist a DC traction protected measuring control device,a two way inner-tripping transition relay and an optical fiber converter of RS485. Traction substations build a communication loop among DC traction protected measuring control devices in order to realize fault information exchange between two feeder lines in any contact network zone.