TRAIN POWER SUPPLY CONTROL METHOD AND SYSTEM UNDER SINGLE-PANTOGRAPH FAULT, CONTROLLER, AND TRAIN

A train power supply control method and system under a single-pantograph fault, a controller, and a train. The train power supply control method under the single-pantograph fault comprises: determining whether a train has a single-pantograph fault; if yes, controlling a high-voltage contactor (KM1) which is connected between output sides of two pantographs (101 and 102) to be closed; and otherwise, controlling the high-voltage contactor (KM1) to be maintained at a turn-off state. The method for determining whether the train has a single-pantograph fault comprises: when auxiliary power is provided for two auxiliary inverters (4 and 5) on the train, and high-speed circuit breakers (102, 105, 202, 205) corresponding to two sets of traction units (1 and 2) on the train are all closed, detecting whether traction power is provided for the two sets of traction units (1 and 2); and when the detection result is that traction power is provided for only one set of traction units, determining that the train has a single-