铁路牵引供电系统绝缘管型母线关键技术与实践

Key Technique and Practice of Insulated Tubular Bus-Bar for Railway Traction Power Supply System

文章从系统的角度论述了铁路27. 7 k V绝缘管型母线关键技术,通过标准比对,绝缘性能参数和试验方法选择,以及对接头要点、安装工艺、工程实践、验收与维护的分析,阐述了在铁路牵引供电系统实施绝缘管型母线优良的性能和新型产品技术,提出了解决高速铁路牵引供电系统27. 5 k V侧大电流多根导线并联问题的技术措施和技术装备。所提出的绝缘管型母线的中间接头以屏蔽套、内衬套控制电场分布和接触面积的方法。试验基于系统试验项目和与电压有关的试验参数可在高速铁路上使用,实现了牵引供电系统更优的技术解决方案。

The key technology of 27.7 kV insulated tubular bus-bar for railway is discussed systematically. Through the standards comparison and the adoption of insulation performance parameters and test methods, as well as the analyses of main points of joint, installation technology, engineering practice, acceptance and maintenance, the excellent performance and new product technology of insulated tubular bus-bar for railway traction power supply system are expounded. The technical measures and technical equipment for solving the parallel problem of multi wires in case of large current on the 27.5 kV side of the traction power supply system are put forward. The interemediate joint of insulated tubular bus-bar proposed in this paper uses shielded sleeve and inner liner to contM the electric field distribution and contact area, while the experiment based on system test item and test parameters related to voltage can be used on high speed railway. Thus a better technical solution for traction power supply system is trealized.