铁路牵引供电系统优化控制仿真研究  

Simulation Study on Optimal Control of Railway Traction Power Supply System

作　　者：赵燕[1] 张靖[1] 

机构地区：[1]东南大学电气工程学院,江苏南京210096

出　　处：《计算机仿真》2015年第6期154-157,161,共5页Computer Simulation

摘　　要：针对电气化铁路存在的负序、谐波、无功及电分相等问题,同相牵引供电技术能解决负序、谐波和无功问题,取消电分相环节,有利于重载、高速铁路的发展。提出了将V/V平衡变压器和模块化多电平变换器(MMC)相结合的新型同相牵引供电系统方案。为了提高补偿电流的跟踪能力,引入复合控制;同时为解决传统的负序二倍频坐标变换不适用于同相牵引供电系统的问题,提出一种采用谐振(PR)控制的环流控制方法,控制MMC消除三相不平衡,并滤除谐波和无功。仿真结果验证了所提同相供电方案和控制策略的正确性和可行性。Co -phase traction power supply system can solve the problems exist in electrified railways, such as negative sequence, harmonics, reactive power, and neutral sections. An advanced co- phase traction power supply system was proposed, which composes of a V/V transformer and three - phase MMC. Compound control was adopted to improve the compensation current tracking ability. And in order to solve the problem that the double - frequency negative - sequence transformation can not be applied in co - phase traction power supply system, we proposed a cir- culating current controller based on Proportional -Resonant （PR） regulator, to control MMC and eliminate the three - phase unbalance and filter the reactive, harmonics currents. Simulation results verify the correctness and availabil- ity of the proposed scheme and the control strategy.

关 键 词：模块化多电平变换器 同相牵引供电系统 复合控制 不平衡环流抑制 

分 类 号：TM743[电气工程—电力系统及自动化]