城市轨道交通直流牵引供电系统直流避雷器选型研究  

作　　者：尹超准 赵洋洋 

机构地区：[1]天津中铁电气化设计研究院有限公司

出　　处：《电气化铁道》2020年第S01期170-175,183,共7页Electric Railway

摘　　要：城市轨道交通直流牵引系统直流避雷器的选型需从系统过电压大小,被保护设备的雷电冲击耐受水平、雷电过电压的特性、避雷器的等级、避雷器的保护水平以及避雷器的电荷转移能力等方面综合考虑,然而由于缺乏相关选型导则,目前一般靠工程经验。本论文建立了直流避雷器选型的流程,针对城市轨道交通直流牵引系统的特殊性对直流避雷器特性进行研究及参数选型。Due to the lack of guidance for selection of DC surge arrester in DC traction system of urban rail transit,selection of DC surge arresters mainly relies on the experience.However,the amplitude of overvoltage,impulse withstand voltage of equipment to be protected,the characteristics of lightning overvoltage,protection level of surge arresters,and charge transfer capability of a surge arrester,etc.need to be taken into account when carrying out the selection procedure of surge arresters.This document establishes the process of surge arrester selection,which is dedicated to DC traction system of urban rail transit.

关 键 词：操作过电压 雷电过电压 保护水平 持续运行电压 金属氧化物避雷器 避雷器等级 电荷转移能力 

分 类 号：U231.8[交通运输工程—道路与铁道工程]