城市轨道交流牵引电缆贯通供电系统仿真研究

Study on Simulation of Traction Cable Through Power Supply System for Urban Rail Transit

与传统异相供电系统相比,城市轨道交流牵引电缆贯通供电系统最大限度取消了线路中的电分相。本文通过建立主变电所、电缆牵引网、同相供电装置和动力照明负荷的等效模型,构建了牵引电缆贯通供电系统的数学模型,基于该模型进行连续性潮流计算,并以城市轨道交通实际线路为例,对比分析了传统异相供电系统和交流牵引电缆贯通供电系统的电压水平、再生制动能量利用率及供电能力,验证了城市轨道交流牵引电缆贯通供电系统的优越性。

Compared with the traditional different phase power supply system,the AC power supply system of traction cables adopted for urban rail transit eliminates the phase separation in the line to the maximum extent.With the establishing of an equivalent model of main substation,cable traction network,co-phase power supply device and power lighting load,the constructing of the mathematical model of the power supply system of traction cables is constructed,based on which the continuous power flow calculation is carried out.Taking the actual urban rail line as an example,the paper compares and analyzes the voltage level,regenerative braking energy utilization rate and power supply capacity of traditional different phase power supply system and AC power supply system of traction cables,it verifies that the AC traction cable through power supply system is advantageous.