既有电气化铁路长距离供电改造方案研究  

Research on a Long Distance Power Supply Reform Scheme for Existing Electrified Railway

作　　者：周志成 刘童童 刘雪晴 ZHOU Zhicheng;LIU Tongtong;LIU Xueqing(Shenhua Baoshen Railway Group,Baotou 014014 Inner Mongolia,China;School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756 Sichuan,China)

机构地区：[1]神华包神铁路集团,内蒙古包头014014 [2]西南交通大学电气工程学院,成都611756

出　　处：《铁道机车车辆》2021年第5期83-87,共5页Railway Locomotive & Car

基　　金：包神铁路集团既有线贯通式同相供电技术应用研究(2018H010286)。

摘　　要：为解决重载铁路牵引供电系统存在的过分相、再生制动能量利用率低、牵引变压器负载率低等问题,提出一种既有电气化铁路长距离供电改造方案,在牵引变电所设置静止无功发生器(Static Var Generator,简称SVG)动态补偿无功,延长供电距离;将既有线的Vv接线牵引变压器改造成单相牵引变压器,以便组合式同相供电装置的改造,并促进变压器容量的合理利用;在牵引变电所内设置组合式同相供电装置,补偿负序,并在全线实现贯通式供电。文中在以往牵引供电系统建模及连续性潮流计算的基础上,对SVG和组合式同相供电装置进行建模,研究其对牵引变电所馈线电压的影响,以实现对改造方案负荷过程的仿真和校验。算例分析表明,长距离供电改造可以提高再生制动能量利用率和牵引变压器负载率。In order to solve the problems of excessive phase,low utilization rate of regenerative braking energy and low load rate of traction transformer in traction power supply system of heavy-haul railway,this paper proposes a long distance power supply transformation scheme for existing electrified railway.The existing Vv connected traction transformer is transformed into single-phase traction transformer to facilitate the transformation of combined in-phase power supply device and promote the rational utilization of transformer capacity.Combined co-phase power supply device are installed in traction substation,compensation negative sequence,and implement through type power supply on all fronts.This article in traction power supply system modeling and past continuous power flow calculation,on the basis of the SVG and combined co-phase power supply device modeling,studying the influence on traction substation feeder voltage,in order to realize the simulation and validation of the retrofit scheme load process.The example shows that the energy utilization rate of regenerative braking and the load rate of traction transformer can be improved.

关 键 词：长距离供电 SVG 组合式同相供电 再生制动 负荷过程仿真 

分 类 号：TM922.3[电气工程—电力电子与电力传动] U223.5[交通运输工程—道路与铁道工程]