轨道电路内屏蔽电缆多回路模型与其参数计算  

A multi-loop model and its parameters calculation for the cable with inner screens of the track circuit

作　　者：谭瑞娟[1] 阳晋 庞福滨 嵇建飞 邹军[1] TAN Ruijuan;YANG Jin;PANG Fubing;JI Jianfei;ZOU Jun(State Key Lab of Control and Simulation of Power Systems and Generation Equipments (Tsinghua University),Beijing 100084,China;Beijing National Railway Research &Design Institute of Signal & Communication Co.,Ltd.,Beijing 100073,China;Beijing High-speed Railway Operation Control System Engineering Technology Research Center,Beijing 100073,China;State Grid Jiangsu Electric Power Co.,Ltd.Research Institute,Nanjing 211103,China)

机构地区：[1]电力系统及发电设备控制和仿真国家重点实验室(清华大学),北京100084 [2]北京全路通信信号研究设计院集团有限公司,北京100073 [3]北京市高速铁路运行控制系统工程技术研究中心,北京100073 [4]国网江苏省电力有限公司电力科学研究院,江苏南京211103

出　　处：《电力工程技术》2019年第3期8-12,50,共6页Electric Power Engineering Technology

基　　金：国家自然科学基金资助项目(51577103)

摘　　要：内屏蔽数字信号电缆是高速铁路轨道电路的传输通路,其多回路仿真模型与参数计算对研究高速铁路轨道电路信号传输有重要意义。首先,文中考虑内屏蔽数字信号电缆的结构特点和信号传输路径,建立其考虑耦合的多回路电路仿真模型。其次,对多回路中涉及的参数,采用有限元方法,给出电缆电容、电感和电阻参数计算的一般方法,包含有限元计算各类参数的边值问题的详细描述、必要的计算公式和步骤。最后,以8芯内屏蔽电缆为例,建立其仿真模型,通过计算结果与测量结果对比,验证计算方法的正确性。文中建立的多回路模型可用于高速铁路轨道电路信号传输研究和故障诊断。The digital signaling cable with inner screens is transmission channel in the high-speed railway track circuit.Its multi-loop simulation model and parameters have important significance for the research of high-speed railway track circuit.Firstly,in this paper,the multi-loop model of the digital signaling cable with inner screens is set up based on its structure characteristics and transmission path.Furthermore,the parameters of cable included capacitance,inductance,resistance are calculated based on the finite element method,including a detailed description of the boundary value problem of various parameters for calculating the finite element,the necessary calculation formula and step.Finally,taking 8-core shielded cables as an example,the simulation model is established,and the validity of the calculation method is verified by the compare between the calculated values of cable and measured values.And the established multi-loop model can be used to research signal transmission and fault diagnosis of high-speed railway track circuit.

关 键 词：高速铁路 轨道电路 内屏蔽数字信号电缆 有限元方法 

分 类 号：TM153[电气工程—电工理论与新技术]