Automatic operation method of mixed-flow water-turbine generator set water supply filter monitoring system

The automatic operation method of the mixed-flow water-turbine generator set water supply filter monitoring system comprises an automatic switching method, and the automatic switching method comprises the following steps: after a starting command of a method for switching a technical water supply 2 # filter to a 1 # filter is received, detecting whether the operation conditions comprise an in-situ LCU automatic control mode; the control mode of the filter control cabinet is remote and has no fault; no filter switching process exists; inlet and outlet electric valves of the 1 # filter and the 2 # filter have no torque protection action; the inlet and outlet electric valves of other filters are fully opened; if yes, executing the next step, and if not, giving an alarm and quitting the operation method; the method is used for solving the problems of pressure fluctuation and equipment damage of a technical water supply system caused by the possibility of wrong judgment of operation conditions or improper operatio