中国铁道科学2018，Vol.39Issue(2)：80-86,7.DOI:10.3969/j.issn.1001-4632.2018.02.10
牵引供电系统对埋地管道阻性耦合交流干扰建模及仿真
Modeling and Simulation of Resistive Coupling AC Interference of Traction Power Supply System to Buried Pipeline
摘要
Abstract
The analysis of resistive coupling interference principle of traction power supply system to buried pipeline shows that,the pipe-ground potential of buried pipeline is mainly affected by the propagation constant of "rail-earth" loop,which is determined by the electrical topology of traction power supply system and its design parameters.On this basis,by using CDEGS software,a model for the resistive coupling AC interference of traction power supply system to buried pipeline is established.Meanwhile,the accuracy of the model is verified by comparing the short-circuit impedance of traction power supply system and the pipe-ground potential of buried pipeline with the calculation results of traditional Carson theory.In the light of the special electrical topology of traction power supply system,the influence of traction substation grounding resistance,return flow network impedance and rail leakage resistance on the pipe-ground potential of buried pipeline is analyzed at different positions of electric locomotive from the traction substation.Results show that the smaller the grounding resistance of traction substation,the closer the buried pipeline is from traction substation and the higher is its pipe-ground potential.Compared with single-track railway,the double-track railway with cross-linking of up and down rails reduces the impedance of return flow network and also reduces the pipe-ground potential of buried pipeline.The better rail insulation protection,the greater the rail leakage resistance,the lower the pipe-ground potential of buried pipeline.关键词
牵引供电系统/埋地管道/阻性耦合交流干扰/接地电阻/钢轨泄漏电阻Key words
Traction power supply system/Buried pipeline/Resistive coupling AC interference/Grounding resistance/Rail leakage resistance分类
交通工程引用本文复制引用
陈民武,朱久国,解绍锋,李建军,朱远帆,刘思阳..牵引供电系统对埋地管道阻性耦合交流干扰建模及仿真[J].中国铁道科学,2018,39(2):80-86,7.基金项目
国家自然科学基金资助项目(51307143) （51307143）
中国石油管道局工程有限公司设计分公司科研项目(院科:GK16-5-A) （院科:GK16-5-A）
