机电工程技术2025，Vol.54Issue(21)：109-113,5.DOI:10.3969/j.issn.1009-9492.2025.21.019
地铁牵引变电所框架电流保护设计改进
Improvement of Frame Current Protection Design of Subway Traction Substation
刘建华 1程松金2
作者信息
- 1. 广州铁路职业技术学院,广州 511300
- 2. 深圳市地铁集团有限公司,广东 深圳 518040
- 折叠
摘要
Abstract
The traction substation is the source of traction power for metro trains.To prevent and reduce the risks brought by leakage discharge from the DC traction power supply system of the traction substation to the equipment shell frame,the frame current protection is set up in the metro traction substation.To improve the reliability and stability of the frame current protection system operation,reduce the risk of false operation of the frame current protection,and minimize the impact of power outages caused by it,the frame current protection strategy is improved.By optimizing the frame current protection circuit and tripping logic,additional current monitoring components for the frame current protection circuit are added to enhance the monitoring of the primary current in the frame current protection circuit.The triggering conditions for the frame current protection tripping logic are expanded to improve fault tolerance.A pre-warning function for frame current protection is also introduced to elevate the pre-alert level of frame current protection actions.The operation of subway lines shows that the improved frame current protection strategy effectively reduces the risk of frame current protection misoperation,greatly reduces the occurrence of traction power supply system tripping events,improves the safety and reliability of power supply in subway traction substations,and enhances the safety guarantee of subway operation.关键词
牵引变电所/框架电流保护/设计改进Key words
traction substation/frame current protection/design improvement分类
交通工程引用本文复制引用
刘建华,程松金..地铁牵引变电所框架电流保护设计改进[J].机电工程技术,2025,54(21):109-113,5.
