摘要
为提高钢轨传输特性,ZPW-2000A轨道电路在钢轨上安置了补偿电容,以抵消钢轨在传输高频信号过程中的感抗作用,其中补偿电容值及补偿间距是补偿电容设计的关键参数。本文在构建补偿电容与钢轨传输模型的基础上,通过轨道电路传输计算的方法,研究了补偿电容值及补偿间距对钢轨发送端输入阻抗、电压及电流等电气参数的影响规律,进一步探索了钢轨各点轨面电气参数与补偿电容值的函数关系。结果表明,钢轨发送端阻抗模值随补偿电容值的增加呈现递减趋势,阻抗相位角则随补偿电容值的增加呈现先降低后增加的趋势。
In ZPW-2000A track circuit,the compensation capacitor is added to the rails to reduce the inductive reactance of the rails during signal transmission for the purpose of enhancing the transmission characteristic of the rails.The value of the compensating capacitance and the spacing of the capacitors are key parameters for designing the capacitors.On the basis of building a model of compensating capacitance and rail transmission,the effects of the value of the compensating capacitance and the spacing of the capacitors on the input impedance,voltage and current of the sending end of the rails is investigated by calculating the transmission of the track circuit.Fur-thermore,the functional relationship between the rail surface voltage and the compensation ca-pacitance is probed.The results show that the input impedance of the sending end of the rails ap-pears a decreasing trend as the value of the compensating capacitance increases while the imped-ance phase angle appears a decreasing and then increasing trend as the value of the compensating capacitance increases.
作者
温术来
于树永
赵寰宇
卢江
Wen Shulai;Yu Shuyong;Zhao Huanyu;Lu Jiang
出处
《铁道通信信号》
2020年第6期16-20,共5页
Railway Signalling & Communication
