双向变流器在城市轨道交通供电系统中的应用
王毛1郑月宾2宋雷1杨雅银1辛红东3何俊文4梅桂芳2
Application of Bidirectional Converters in Urban Rail Transit Power Supply Systems
WANG Mao1ZHENG Yuebin2SONG Lei1YANG Yayin1XIN Hongdong3HE Junwen4MEI Guifang2
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作者信息:1.徐州地铁集团有限公司， 221116， 徐州
2.西安许继电力电子技术有限公司， 710075， 西安
3.中铁十二局集团电气化工程有限公司， 030024， 天津
4.中铁第四勘察设计院集团有限公司， 430063， 武汉
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Affiliation:1.Xuzhou Metro Group Co., Ltd., 221116, Xuzhou, China
2.Xi’an XJ Power Electronics Technology Co., Ltd., 710075，Xi’an, China
3.China Railway 12th Bureau Group Electrification Engineering Co., Ltd., 030024, Tianjin, China
4.China Railway Siyuan Survey and Design Group Co., Ltd., 430063, Wuhan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.02.011
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中图分类号/CLCN:U231.8
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栏目/Col:研究报告
摘要:
［目的］为了解决城市轨道交通供电系统存在的再生能量利用和网压波动大的问题，提出一种基于双向变流供电技术的牵引系统供电方案。［方法］介绍了双向变流器的主电路拓扑及其运行逻辑；提出了独立供电和混合供电两种模式下的双向变流器控制特性，并设计了恒压和下垂相结合的外特性曲线；以徐州地铁2号线为例，进行了车辆段试车线单列车AW0(空载)牵引及制动工况下的独立供电和混合供电试验，以及正线12列车正常运行工况下的独立供电和混合供电试验，测试了列车运行性能指标和双向变流器性能指标。［结果及结论］双向变流器可根据线路上的列车运行工况，自动、平滑地切换整流及逆变运行模式，与列车的牵引及制动工况自动适应。采用双向变流供电能够显著改善列车网压的波动，避免网压低于1 500 V的工况，改善了列车的牵引运行特性。
Abstracts:
［Objective］ To address the challenges about renewable energy utilization and significant grid voltage fluctuations in urban rail transit power supply system, a power supply solution based on bidirectional converter technology for traction system is proposed. ［Method］ The main circuit topology and operational logic of bidirectional converters are introduced. The control characteristics of bidirectional converters under two operating modes of independent power supply and hybrid power supply are presented, and the external characteristic curves combining constant voltage and droop are designed. Using the example of Xuzhou Metro Line 2, tests are conducted for both independent power supply and hybrid power supply under traction and braking conditions for a single train AW0 (unloaded) on the depot test track. Same tests are also performed under normal operation conditions with 12 trains on the mainline. Performance indicators for train operation and bidirectional converters are evaluated. ［Result & Conclusion］ Bidirectional converters can automatically and smoothly switch between rectification and inversion modes based on the train on-line operation conditions, automatically adapting to the train traction/braking conditions. The use of bidirectional converters in power supply significantly ameliorates train grid voltage fluctuation, preventing working conditions below 1 500 V and enhancing train traction characteristics.
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