《铁路技术管理规程》普速版 第七章 2014.7（Rail technical management regulations speed version of the seventh chapter 2014.7）.docVIP

《铁路技术管理规程》普速版 第七章 2014.7（Rail technical management regulations speed version of the seventh chapter 2014.7） The seventh chapter is power supply and water supply Traction power supply 196th, in order to maintain the good technical state of traction power supply equipment and ensure the safe operation of the traction power supply system, the power supply section and other power supply maintenance institutions should be set up. The jurisdiction of power supply maintenance institutions shall be determined according to the conditions of the line and power supply equipment. Traction power supply equipment includes substation equipment (transformer substation, open and shut substation, transformer substation), contact network and telecontrol system. 197th traction power supply equipment shall ensure reliable power supply for uninterrupted driving. The traction power supply capacity should be in line with the transportation capacity of the line to meet the required train weight, train density and operation speed. The nominal value of the contact voltage is 25kV, the maximum operating voltage is 27.5 kV, the short-time (5 min) maximum working voltage is 29 kV, and the minimum operating voltage is 19 kV. Traction substation must have double power supply and double circuit power supply. Traction transformer adopts fixed standby mode and has automatic switching function. When a traction substation is out of power, the adjacent traction substation can supply power over the district. During operation, the average power factor is not less than 0.9. The 198th traction power supply dispatching system should have the condition of remote real-time monitoring of traction power supply equipment, and be centralized and unified management of the dispatching system. The 199th sections of the contact network should be taken into account, such as maintenance, power failure, convenience and reduction of the scope of power failure, and full consideration of the normal operation of the train an