摘要
Abstract
The traction power supply of electrified railway usually adopts direct power supply with return line or AT power supply.The main problem is that the three-phase power supply of electrified railway can not be balanced and some harmonic interference will be produced by electric locomotives.This paper analyzes the functions of the main reactive power compensation devices in the electrified railway traction power supply system,and analyzes the voltage,power and harmonic content of the electrified traction power supply system.The application performance of general reactive power compensation device in electrified railway traction substation is compared and analyzed.This paper discusses the application of thyristor controlled reactor(TCR)and magnetically controlled reactor(MCR)in railway electrical system.The principle and technical characteristics of both are introduced.TCR uses thyristor control to adjust the current and voltage of the reactor and has the characteristics of accurate control and fast response.MCR adjusts the inductive level of the reactor through magnetic control technology,which has the characteristics of stability and high temperature resistance.Through the common characteristics and differences of the two kinds of equipment in railway application.They all play a key role in the railway traction power supply system,realizing the regulation of current and voltage to meet different operation needs.At the same time,both TCR and MCR have the potential of digital control and intelligent operation,and the whole electrical system can be optimized through advanced monitoring system.By comparing and analyzing their similarities and differences in performance,safety,economy and reliability,this study provides a reference idea for selecting appropriate reactors in the follow-up railway electrical system.关键词
电气化铁路/牵引供电系统/无功补偿/功率因数/运营成本Key words
electrified railway/traction power supply system/reactive power compensation/power factor/operating cost分类
交通工程
