调节型网络化牵引供电系统拓扑结构研究

Study on Topological Structure of Adjustable Networked Traction Power Supply System

为实现电气化铁路对电能的高效利用,从既有牵引供电系统结构入手,梳理了格式化供电模式下供电孤岛等特征,分析了制约牵引供电能源利用率的因素,明确了网络化牵引供电系统应具备的功能特性与技术路线,并针对牵引变电所变换侧提出了基于PWM变流器的调节型网络化供电拓扑结构,通过仿真分析验证了牵引潮流控制可行性,为网络化供电系统各项功能实现奠定了基础。

In order to realize the utilization of electric energy with high efficiency for the electrified railway,the paper,starting from the existing structure of traction power supply system,summarizes the characteristics of power supply island under traditional formatted power supply mode,analyzes the factors restricting the energy utilization rate,clarifies functional characteristics and technical routes with which the networked traction power supply system should be equipped,proposes an adjustable networked power supply topology based on PWM converter for the transformation side of traction substation.The feasibility of traction power flow control is verified through simulation analysis,and it lays a foundation for the realization of various functions of networked power supply system.