Abstract: With the continuous construction and improvement of the power grid structure, the national economic development and social life have higher and higher requirements for the power supply reliability of the power system. The local standby automatic switching of the station can only solve the switching of the main and standby power supply of the station. For the adjacent stations of the single power load loop network and the double power series chain network, the fast switching of the main and standby power supply cannot be achieved. Through the structural analysis of Bayannur 110kV main grid and the influence of relay protection performance on the power supply reliability of different operation modes, as well as the analysis of the disadvantages of the adopted local standby automatic switching, an application scheme based on fiber channel real-time remote standby automatic switching is proposed and applied to Bayannur 110kV single power triangular ring network. Combined with the main structural characteristics of Bayannur 110kV main grid, according to the requirements of the four characteristics of relay protection, reasonable operation mode is arranged, and suitable application configuration suggestions for remote standby automatic switching are put forward, which plays a guiding role for similar problems in the power grid.