摘要
针对轨道交通车辆牵引电流谐波对直流供电系统的影响,为增强列车直流供电系统的可靠性,提出了轨道交通车辆直流母线接地改进方案。该方案通过采用列车母线负线单点接地方式,有效地避免了牵引谐波对直流供电电源品质的影响,降低了设备供电保护断路器的误跳概率。通过增加接地故障保护断路器,增加了列车运营的可靠性和安全性。
Focusing on the influence of traction current harmonic on DC power supply system,an improvement scheme of DC bus grounding is proposed to improve the reliability of DC power system.This scheme adopts the single point grounding of DC negative line,and has effectively avoided the influence of traction harmonic on the quality of DC power supply,reduced the wrong tripping probability of power supply protection circuit breaker.The reliability and safety of train operation are improved by using more power supply protection circuit breakers.
作者
李文荣
孙士杰
闫海城
高福昕
LI Wenrong;SUN Shijie;YAN Haicheng;GAO Fuxin(CRRC Changchun Railway Vehicles Co.,Ltd.,130062,Changchun,China)
出处
《城市轨道交通研究》
北大核心
2021年第3期207-210,共4页
Urban Mass Transit
关键词
轨道交通车辆
直流母线
单点接地
接地故障
故障保护
urban rail transit vehicle
DC bus
single point grounding
grounding fault
fault protection
