直流馈线快速熔断器在城市轨道交通的应用选型  

Application and Selection of DC Feeder High-speed Fuses for Urban Rail Transit

作　　者：程军 尹超准 CHENG Jun;YIN Chaozhun

机构地区：[1]中铁第六勘察设计院集团有限公司电气化设计院分公司

出　　处：《电气化铁道》2021年第4期75-77,共3页Electric Railway

摘　　要：随着列车储能技术的飞速进步,近些年采用无接触网系统的超级电容列车逐渐出现在大众视野。与超级电容列车匹配,直流供电系统方案也在发生着巨大变化,传统的牵引变电所由充电站代替,由于不需要贯通接触网,充电站的直流馈线也不再需要复杂的闭锁和双边联跳等功能,直流断路器的优势不再明显,反而同样具有限流、快速分断且成本低的熔断器的优势凸显。熔断器在交流系统中的应用较早,且应用领域广泛,而其在城市轨道交通直流牵引供电系统中的应用稍显不足,本文侧重于研究直流馈线保护用快速熔断器在城市轨道交通中的选型及应用。Along with the rapid development of train energy storage technology,catenary-free super capacitor trains have gradually appeared in the sight of the public in recent years.DC power supply system schemes,matching with the super capacitor train,are being under dramatic changes,the traditional traction substation is replaced by the charging station.Since the through overhead contact line is not required,the complicated blocking and bilateral inter-tripping functions are no longer required by DC feeders in the charging station,the advantages of DC circuit breakers are less dominant,on the contrary,the advantages of fuses with functions of current limiting,fast breaking and low cost are becoming more dominant.Fuses are applied earlier in AC system,and applied in many areas.However,the application of fuses in DC traction power supply system for urban rail transit is slightly insufficient,therefore,the paper focuses on researches of selection and application of high-speed fuses for DC feeder protection for urban rail transit.

关 键 词：快速熔断器 弧前时间 时间常数 分断能力 

分 类 号：U231.8[交通运输工程—道路与铁道工程]