摘要
分析了中性点脉宽注入法在铁路自闭贯通输电线路单相接地故障定位中应用的可行性。在介绍中性点脉宽注入法原理的基础上,讨论了中性点注入信号和中性点接入电阻的选取方法;建立了仿真模型,对线路所带负荷、不同过渡电阻对中性点脉宽注入法的影响及该方法对供电的影响进行了分析。结果表明,中性点脉宽注入法在铁路自闭贯通线单相接地故障定位中的应用是可行的。
The feasibility of applying neutral point pulse width injection method in the location of single phase grounding fault occurred in railway automatic blocking and continuous power transmission lines is analyzed. After presenting the principle of neutral point pulse width injection methods, the choosing methods of neutral point injected signal and the neutral point connecting resistance are discussed; a simulation model is built and the influences of the loads of transmission lines and various transition resistances on neutral point pulse width injection method as well as the influence of neutral point pulse,width injection method on power supply are analyzed. Research results show that it is feasible to apply neutral point pulse width injection method in the location of single phase grounding fault occurred in railway automatic blocking and continuous power transmission lines.
出处
《电网技术》
EI
CSCD
北大核心
2006年第16期59-63,共5页
Power System Technology
基金
国家自然科学基金资助项目(50407009)
四川省杰出青年基金项目(06ZQ026-012)~~
关键词
铁路自闭贯通输电线路
故障定位
中性点脉宽注入法
中性点注入信号
中性点接入电阻
railway automatic blocking and continuous power transmission lines
fault location
neutral point pulse width injection method
neutral point injected signal
neutral point connecting resistance
