电力系统及其自动化学报2013，Vol.25Issue(3)：31-34,4.
新型AT供电牵引网故障测距方案
Fault Location of Novel AT Power Traction Network
摘要
Abstract
The AT (Auto Transformer) power supply mode with parallel connection is applied on high railway and dedicated passenger lines in our country on a large scale.The traction transformer is single phase without neutral terminal in secondary side and the mid-point in secondary side is not connected with the rails and earth.Based on the generalized method of symmetrical components,the short-circuit impedance was analyzed.The impedance characteristic curves of T-R fault are plotted.The usual fault location principle based on ratio of AT boosting currents at mid-point is not perfectly adapted to this power supply system.A new fault location comprehensive scheme based on ratio of AT boosting currents and ratio of up-down line currents is put forward.Simulation analysis on Matlab/Simulink indicates that the fault location principle is accurate and effective.关键词
供电牵引网/供电方式/故障测距/中性点吸上电流比Key words
power traction network/ power supply mode/ fault location/ ratio of boosting currents at mid-point分类
信息技术与安全科学引用本文复制引用
李岗,林国松,韩正庆..新型AT供电牵引网故障测距方案[J].电力系统及其自动化学报,2013,25(3):31-34,4.基金项目
国家自然科学基金项目(50907055) （50907055）
铁道部科技研究开发计划项目(2011J023-C) （2011J023-C）
中央高校基本科研业务费专项资金项目(SWJTV12CX034) （SWJTV12CX034）
