以京港高铁线吉安西站5G受端钢轨胶接绝缘接头烧损问题为例,深入研究和探讨高速铁路站内钢轨绝缘节烧损问题。通过对钢轨绝缘节电压差、电流数据实时监测和结合牵引供电S C A D A终端系统实时监测数据分析、牵引回流设计与现场实际复核...以京港高铁线吉安西站5G受端钢轨胶接绝缘接头烧损问题为例,深入研究和探讨高速铁路站内钢轨绝缘节烧损问题。通过对钢轨绝缘节电压差、电流数据实时监测和结合牵引供电S C A D A终端系统实时监测数据分析、牵引回流设计与现场实际复核、地面固定设备人工测试查找等方法,分析因牵引变电所处综合贯通地回流不畅造成轨回流升高、绝缘节压差增大导致钢轨绝缘接头烧损的原因。理论分析结合现场数据验证,系统地阐述了车站钢轨绝缘节烧损产生的原因、查找思路及方法,为新建高速铁路电务和牵引供电设备设施接口工程提前介入工作提供了关键环节指南。展开更多
In China, the unilateral power supply has been used in AC electrified railway, which depends on the management mode of power system. For better economic and technical indexes, all-parallel AT traction system is widely...In China, the unilateral power supply has been used in AC electrified railway, which depends on the management mode of power system. For better economic and technical indexes, all-parallel AT traction system is widely used in passenger dedicated line. In this paper, the equivalent circuit model of unilateral power supply and bilateral power supply is investigated, and based on this model, the difference between unilateral power supply impedance and bilateral power supply impedance is discussed.展开更多
文摘以京港高铁线吉安西站5G受端钢轨胶接绝缘接头烧损问题为例,深入研究和探讨高速铁路站内钢轨绝缘节烧损问题。通过对钢轨绝缘节电压差、电流数据实时监测和结合牵引供电S C A D A终端系统实时监测数据分析、牵引回流设计与现场实际复核、地面固定设备人工测试查找等方法,分析因牵引变电所处综合贯通地回流不畅造成轨回流升高、绝缘节压差增大导致钢轨绝缘接头烧损的原因。理论分析结合现场数据验证,系统地阐述了车站钢轨绝缘节烧损产生的原因、查找思路及方法,为新建高速铁路电务和牵引供电设备设施接口工程提前介入工作提供了关键环节指南。
文摘In China, the unilateral power supply has been used in AC electrified railway, which depends on the management mode of power system. For better economic and technical indexes, all-parallel AT traction system is widely used in passenger dedicated line. In this paper, the equivalent circuit model of unilateral power supply and bilateral power supply is investigated, and based on this model, the difference between unilateral power supply impedance and bilateral power supply impedance is discussed.