适用于高原铁路的贯通供电方案及组合式变换器控制策略  

Continuous Power Supply Scheme and Combined Converter Control Strategy for Plateau Railway

作　　者：夏焰坤 干锋[2] XIA Yankun;GAN Feng(School of Electrical Engineering and Electronic Information,Xihua University,Chengdu 610039,China;State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西华大学电气与电子信息学院,四川成都610039 [2]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《铁道学报》2022年第9期42-47,共6页Journal of the China Railway Society

基　　金：四川省科技计划(2020YFG0184);西南交通大学牵引动力国家重点实验室开放课题(TPL1907)。

摘　　要：高原铁路存在长大坡道、外部电源容量较小等问题,加之常规高速铁路固有的负序和过分相问题,使得高原铁路牵引供电系统面临较大困难。牵引变电所全线贯通供电是解决高原铁路供电问题的有效技术手段之一。针对现行同相牵引供电系统和贯通供电系统的不足,提出一种采用组合式变换器的贯通同相供电系统方案。介绍贯通供电系统和功率平衡原理,采用瞬时功率理论设计直接功率控制器,完成控制系统的设计。以3个变电所构成的贯通系统为例,搭建负序治理的相关仿真模型。仿真结果表明,所提方案和控制策略具有有效性和准确性。Problems of plateau railways such as long slopes and small capacity of external power supply, coupled with the inherent negative sequence and over-phase problems of conventional high-speed railways, cause great difficulty to the traction power supply system of plateau railways. The continuous power supply of traction substation is an effective technical means to solve the power supply problem of the plateau railway. In response to the shortcomings of the current co-phase traction power supply system and continuous traction power supply system, a continuous co-phase traction power supply system scheme using combined converters was proposed. Firstly, the system and power balance principle of the continuous traction power supply system were introduced. Secondly, the direct power controller was designed using the theory of instantaneous power to complete the design of the control system. Finally, based on the continuous traction system composed of three substations, the relevant simulation model of negative sequence governance was built. The simulation results show the effectiveness and accuracy of the scheme and control strategy proposed in this paper.

关 键 词：贯通供电系统 高原铁路 电分相 直接功率控制 控制策略 

分 类 号：U223[交通运输工程—道路与铁道工程]