Electrical characteristics of new three-phase traction power supply system for rail transit

查看全文 作　　者：Xiaohong [1]Huang;Hanlin [1]Wang;Qunzhan [1]Li;Naiqi [1]Yang;Tao [1]Ren;You [1]Peng;Haoyang [1]Li

机构地区：[1]School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China

出　　处：《Railway Engineering Science》索引2023年第31卷第1期,共14页

基　　金：This research was supported by the Science and Technology Plan Project of Sichuan Province(No.21YYJC3324);the Science and Technology Plan Project of Sichuan Province(No.2022YFQ0104). 摘　　要：A novel three-phase traction power supply system is proposed to eliminate the adverse effects caused by electric phase separation in catenary and accomplish a unifying manner of traction power supply for rail transit.With the application of two-stage three-phase continuous power supply structure,the electrical characteristics exhibit new features differing from the existing traction system.In this work,the principle for voltage levels determining two-stage network is dissected in accordance with the requirements of traction network and electric locomotive.The equivalent model of three-phase traction system is built for deducing the formula of current distribution and voltage losses.Based on the chain network model of the traction network,a simulation model is established to analyze the electrical characteristics such as traction current distribution,voltage losses,system equivalent impedance,voltage distribution,voltage unbalance and regenerative energy utilization.In a few words,quite a lot traction current of about 99%is undertaken by long-section cable network.The proportion of system voltage losses is small attributed to the two-stage three-phase power supply structure,and the voltage unbal-ance caused by impedance asymmetry of traction network is less than 1‰.In addition,the utilization rate of regenerative energy for locomotive achieves a significant promotion of over 97%. 关键词：Three-phase AC power supply Two-stage power supply structure Electrical characteristics Current distribution Voltage losses Regenerative energy

相关文献

参考文献（24）
引证文献（1）
耦合文献（0）

参考文献(24)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Electrical characteristics of new three-phase traction power supply system for rail transit

参考文献(24)

引证文献(1)

用户提示