高速和重载电气化铁路V型接线牵引变压器负序补偿研究  

Negative sequence compensation of high-speed and heavy-haul electric railroad with V-connection transformer

作　　者：夏焰坤[1] 李群湛[1] 解绍锋[1] 易东[1] 郭锴[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电力自动化设备》2014年第2期73-78,共6页Electric Power Automation Equipment

基　　金：国家科技支撑计划(2007BAA12B05);铁道部科技研究开发计划项目(2012J012-E)~~

摘　　要：为解决V形接线形式牵引变电所引起的负序问题,首先分析了V型接线形式负序产生机理。在此基础上提出基于潮流控制器(PFC)的补偿方法,该方法采用2个单相背靠背连接的变流器在变压器次边2个端口进行功率交换和补偿,容易实现异相供电补偿模式和同相供电补偿模式,同时分析了基于PFC装置的负序补偿原理及电流检测方法,其中电流检测方法采用瞬时无功功率理论。最后对补偿方案进行了仿真验证,仿真结果表明所提方法能取得良好的补偿效果。Aiming at the negative sequence problem of traction substation with V-connection transformer,its generation mechanism is analyzed,based on which ,the compensation method based on PFC（Power Flow Controller） is proposed. It applies two back-to-back inverters at two ports of transformer secondary side for power exchange and compensation,which eases the implementation of both out-phase and co-phase power supply compensation modes. The principle of negative sequence compensation based on PFC and the method of current detection are analyzed. The instantaneous reactive power theory is adopted in the current detection. Simulative results confirm the effectiveness of the proposed comnensation scheme.

关 键 词：V形接线牵引变压器 补偿 负序 潮流控制器 同相供电 电流检测 电气化铁路 

分 类 号：U223.5[交通运输工程—道路与铁道工程]