【摘要】 电力系统高频保护是保证电力系统通信正常工作的一个重要保护系统,在线监测高频通道对电力系统安全运行具有重要意义。文章论述了高频通道的组成情况,在比较几种在线检测方法的基础上,选择了输入阻抗法进行数值Matlab仿真。仿真结果表明,可以将高频通道中不同元件损坏时的输入阻抗变化作为故障监测的依据,为高频保护通道在线监测系统提供一定的理论指导。更多还原

【Abstract】 The carrier protection system is important to insure normal operation of electric power system, and the fault in-line detecting is a necessary part for the safety production. The configuration of the carrier protection channel is presented in this paper. Based on the discussing about several monitoring methods of different protection channel, the input impedance method is selected and simulated under Matlab. The simulation results show that we can use the elements impedance method, of which the input impedance will be changed when the element fault occurred. This method provides a way for the real time monitoring of the carrier protection channel.更多还原