摘要
随着北京的飞速发展,北京地铁的运营压力日益加重,不仅要满足市民通勤的需求,还要承担重大会议及活动的保驾任务,由此,对地铁供电设备,尤其是区间牵引网供电稳定性的要求越来越高。框架保护一经动作,其停电面积大、影响范围广、恢复时间长的负面影响在如今的运营压力下急需改善。本文通过分析框架泄漏保护的原理和实际的检测方式,结合北京地铁7号线的框架保护设置情况,提出改进建议,对其绝缘安装的设备框架结构、检测方式、检测设备及电流型框架保护的动作范围进行改造和调整,以达到减少框架保护动作对牵引网供电的影响,提高直流牵引设备的供电可靠性。
With the rapid development of the capital city Beijing,the operating pressure of Beijing subway is increasing day by day.It should not only meet the needs of citizens for commuting,but also undertake the task of driving major conferences and activities.As a result,the requirements for the stability of the power supply of subway power supply equipment,especially the traction network in the interval,are getting higher and higher.Once the framework protection is activated,the negative effects of large power outages,wide impact and long recovery time are in urgent need of improvement under today's operational pressure.In this paper,by analyzing the principle and actual detection method of frame leakage protection,combined with the frame protection setting of Beijing Metro Line 7,suggestions for improvement are put forward,the frame structure of its insulation installation equipment,detection methods and detection equipment,as well as the action of current-type frame protection The scope is modified and adjusted to reduce the influence of the frame protection action on the power supply of the traction network and improve the power supply reliability of the DC traction equipment.
作者
贾立斌
JIA Libin(Power Supply Branch of Beijing Subway Limited,Beijing,102218 China)
出处
《科技创新导报》
2022年第25期36-39,共4页
Science and Technology Innovation Herald
关键词
北京地铁
框架泄漏保护
框架结构
检测方式
供电可靠性
Beijing subway
Frame leakage protection
Frame structure
Detection method
Power supply reliability
