高速铁路牵引供电系统负荷过程仿真技术的研究

Load process simulation of traction power supply system of high-speed railway

高速铁路牵引供电系统负荷过程仿真主要包括动车组运行的牵引负荷功率计算和牵引供电系统的潮流计算。通过建立牵引计算模型得到动车组运行过程中的电气负荷特性,基于多导体传输线模型,建立牵引网等值电路,基于牵引变电所端口电气量通用变换关系,建立牵引变电所等值电路,基于牵引负荷功率进行牵引供电系统潮流计算,可以得到动车组运行过程中牵引供电系统的电压和电流的变化。以此为基础,编制了高速铁路牵引供电系统负荷过程仿真程序,通过仿真程序对云南省开通的首条高速铁路—长昆客运专线邓家山牵引供电系统进行了仿真计算,计算结果与中国铁道科学研究院的实地测试结果相一致。高速铁路牵引供电系统负荷过程仿真技术的研究对于深入研究高铁牵引供电系统的运行规律,对供电系统中各种供电指标的核查、校验等具有重要意义。

The load process simulation of traction power supply system of high-speed railway mainly includes traction load power calculation during the EMU running and power flow calculation of traction power supply system.A traction calculation model was established to obtain the electrical load characteristics during the EMU running.Based on the multi-conductor transmission line model,an equivalent circuit of traction network was established,and based on the general transformation relation of the electric quantities of traction substation,the equivalent circuit of traction substation was established.Based on the traction load power,power flow calculation of traction power supply system could be carried out,the change of voltage and current of traction power supply system could be obtained.On this basis,a load process simulation program of high-speed railway traction power supply system was compiled,and the simulation program was used to simulate the traction power supply system of Dengjiashan of the Changsha-Kunming Passenger Line which was the first high-speed railway in Yunnan Province.The simulation results were consistent with the actual test results which were made by China Academy of Railway Sciences.The load process simulation of traction power supply system of high-speed railway is of great significance to study the operation rules of traction power supply system of high-speed railway,check and verify the various power supply indexes in the power supply system.