| 引用本文: | 何晓琼,彭 旭,周瑛英,王 远,舒泽亮,肖 建.一种新型同相牵引供电系统均流性能研究[J].电力自动化设备,2014,34(4): |
| HE Xiaoqiong,PENG Xu,ZHOU Yingying,WANG Yuan,SHU Zeliang,XIAO Jian.Current-sharing performance of advanced co-phase traction power supply system[J].Electric Power Automation Equipment,2014,34(4): |
|
| 摘要: |
| 研究基于三相-单相变换器的同相牵引供电系统的均流性能。该系统可以完全取消牵引网电分相装置，在牵引网和电网间可以直接进行有功传递，极大改善了电能质量，是一种理想的同相牵引供电系统。建立了该系统的两变电所并网模型与牵引网阻抗模型，分析了系统环流特性和下垂特性，得出该系统具有下垂外特性，可以运用下垂控制实现多个变换器并联运行，并实现系统均流控制，在此基础上给出了该系统的并网控制方法。仿真结果验证了理论分析的正确性。 |
| 关键词: 三相-单相变换器 同相牵引供电系统 环流特性 下垂特性 下垂控制 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51177139）；中央高校基本科研业务费专项资金资助项目（A0920502051202-28）；牵引动力国家重点实验室开放课题项目（TPL1313 |
|
| Current-sharing performance of advanced co-phase traction power supply system |
|
HE Xiaoqiong, PENG Xu, ZHOU Yingying, WANG Yuan, SHU Zeliang, XIAO Jian
|
|
School of Electrical Engineering，Southwest Jiaotong University，Chengdu 610031，China
|
| Abstract: |
| The current-sharing performance of an ideal co-phase traction power supply system is studied， which，based on the three-phase to single-phase converter，transfers directly the active power between power grid and traction network to completely cancel the neutral-section device and greatly improve the quality of electric energy. Its dual-substation model and traction network impedance model are established and its circulation and droop characteristics are analyzed，which shows that，with the droop external characteristic，the parallel operation of multiple converters can be implemented by the droop control to achieve the current sharing. The method of grid-connection control is given and the simulative results demonstrate the correctness of theoretical analysis. |
| Key words: three-phase to single-phase converter co-phase traction power supply system circulation characteristic droop characteristic droop control |
