| 轨道交通车辆直流母线接地改进方案的应用分析 |
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| 引用本文： | 李文荣,孙士杰,闫海城,高福昕.轨道交通车辆直流母线接地改进方案的应用分析[J].城市轨道交通研究,2021,24(3):207-210. |
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| 作者姓名： | 李文荣 孙士杰 闫海城 高福昕 |
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| 作者单位： | 中车长春轨道客车股份有限公司,130062,长春;中车长春轨道客车股份有限公司,130062,长春;中车长春轨道客车股份有限公司,130062,长春;中车长春轨道客车股份有限公司,130062,长春 |
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| 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。
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| 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 |
Application Analysis of Improved DC Bus Ground Scheme for Urban Rail Transit Vehicle |
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| LI Wenrong,SUN Shijie,YAN Haicheng,GAO Fuxin.Application Analysis of Improved DC Bus Ground Scheme for Urban Rail Transit Vehicle[J].Urban Mass Transit,2021,24(3):207-210. |
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| Authors: | LI Wenrong SUN Shijie YAN Haicheng GAO Fuxin |
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| Institution: | (CRRC Changchun Railway Vehicles Co.,Ltd.,130062,Changchun,China) |
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| Abstract: | 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. |
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| Keywords: | urban rail transit vehicle DC bus single point grounding grounding fault fault protection |
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