基于V型接线牵引变压器及SVG的同相供电方案研究  

Study on Co-phase Power Supply Scheme Based on V-connection Traction Transformer and SVG

作　　者：张一鸣 解绍锋[1] 王辉[1] ZHANG Yiming;XIE Shaofeng;WANG Hui

机构地区：[1]西南交通大学电气工程学院

出　　处：《电气化铁道》2022年第6期1-8,共8页Electric Railway

基　　金：国家自然科学基金项目(51877182);四川省科技厅科技项目(2021YJ0028)。

摘　　要：电能质量及电分相问题一直以来是影响电气化铁路朝向高速和重载发展的两个主要技术问题。针对我国电气化铁路广泛应用V型接线牵引变压器,本文提出一种采用单相SVG构建的新型同相供电方案,通过在V型接线牵引变压器的次边设置1个牵引端口及3个补偿端口,可取消牵引变电所出口处电分相,并利用SVG实现对单相牵引负荷引起的负序问题进行治理,必要时还可提高系统功率因数。本文分析了该方案的系统组成、技术原理以及控制策略,并通过仿真验证了方案的可行性及效果。Power quality and phase separation are two main technical problems that affect the electrified railway towards the developing direction of high speed and heavy load.With regard to the wide application of V-connection traction transformers in China's electrified railways,the paper proposes a new co-phase power supply scheme based on single-phase SVG.By setting one traction port and three compensation ports on the secondary side of the V-connection traction transformer,the phase separation at the outlet of the traction substation can be cancelled,and SVG can be used to solve the negative sequence problem caused by single-phase traction load.If necessary,the system power factor can also be improved.The paper analyzes the system composition,technical principle and control strategy of the scheme,and verifies the feasibility and effect of the scheme through simulation.

关 键 词：同相供电 电能质量控制 负序无功综合补偿 静止无功发生器 

分 类 号：U223.5[交通运输工程—道路与铁道工程]