高速铁路智能牵引供电系统的快速自愈重构技术研究

Study on Speediness Self-healing Refactoring Technology of High-speed Railway Intelligent Traction Power Supply System

为了深化研究高速铁路智能牵引供电的快速自愈重构技术,通过分析目前牵引供电系统的自愈重构技术特点,结合接触网电分段功能,提出以接触网供电分段为单元的自愈重构模式,找出自愈重构的薄弱环节为接触网开关,其在带负荷操作、倒闸时间及服役状态等方面难以适应智能牵引供电发展要求。快速自愈重构技术以供电分段单元重构模式为基础,接触网开关分阶段升级为户外27.5 kV真空断路器,供电调度端按最小停电单元对接触网故障进行直控操作。

In order to deeply research the speediness self-healing refactoring technology of high-speed railway intelligent traction power supply system, this paper analyzes the self-healing refactoring technology features of traction power supply system at present, puts forward the self-healing refactoring model of OCS power supply section unit by means of OCS electrical section function, finds out that the weak link of system self-healing refactoring is OCS switch, which couldn’t meet the requirements for intelligent traction power supply development in the aspects of loading operation, switching operation time and service status. Section unit reconstruction model is the basics of speediness self-healing refactoring technology. OCS switch should be upgraded to the outdoor 27.5 kV vacuum circuit breaker in stages. OCS fault unit should be operated and controlled directly according to the minimum outage unit at the power supply dispatching end.