摘要
基于分布参数线路推导了电缆牵引供电系统牵引网空载线路沿线工频过电压分布,并利用Matlab/Simulink搭建了单线电缆供电分布参数线路模型,对电缆供电工频过电压的传播特性进行了研究。通过理论分析及仿真验证,发现供电臂长度及电缆芯线间的互感抗的大小是影响电缆供电沿线工频过电压传播特性的主要因素,而电缆分段的长度对空载线路沿线工频电压的大小基本无影响。
The researches on the power frequency over-voltage propagation characteristics have been made on the distribution parameter line based derivation of distribution of power frequency over-voltage along the no-load line of traction network of cable traction power supply system, and the single line cable distributed parameter line model has been set up by application of Matlab/Simulink. The conclusions are obtained that the length of power supply section and the mutual inductance between cable core wires are the main factors affecting the power frequency over-voltage propagation characteristics along the cable power supply line, while, the length of sectionalized cable has little influence on the power frequency voltage along the no-load line.
出处
《电气化铁道》
2016年第1期1-5,共5页
Electric Railway
基金
中国铁路总公司科技研究开发计划项目(2014J009-B)
云南电网有限责任公司技术研究项目([2014]0303ZB9)
关键词
电缆供电
电容效应
工频过电压
传播特性
Cable power supply
capacitance effect
power frequency overvoltage
propagation characteristics
