Substation signal homologous testing methods and devices and signal system

The invention provides substation signal homologous testing methods and devices and a signal system. A substation comprises station level equipment and bay level equipment which are connected throughutilization of a network. A method comprises the steps of obtaining MMS signals formed by MMS signal points of the bay level equipment, wherein the MMS signals comprise configuration states of the MMSsignal points under effect of excitation signals; and inputting the MMS signals into the station level equipment, thereby testing whether the station level equipment works normally or not. Accordingto the methods, the devices and the signal system, consistency of test signals of the station level equipment and the test signals of the bay level equipment can be ensured, and a communication working state of the substation can be tested efficiently and accurately. 本发明提供了种变电站信号同源测试方法、装置及信号系统，所述变电站包括通过网络连接的站控层设备和间隔层设备，所述方法包括：获取所述间隔层设备MMS信号点形成的MMS信号，其中所述MMS信号包括所述MMS信号点在激励信号作用下的配置状态；将所述MMS信号输入所述站控层设备以测试所述站控层设备是否正常工作，本发明可保证站控