The utility model discloses an electrical power generating system of robot and robot are washed in electrified water -washed of transformer substation's insulator, wherein, this electrical power generating system is including inputing the power, and it links to each other with the circuit breaker, the circuit breaker still links to each other with power main control unit, the output of circuit breaker links to each other with voltage collector and electric current collector respectively, voltage collector and electric current collector are used for respectively gathering the voltage and the current signal of circuit breaker output and conveying to power main control unit, the output of circuit breaker still links to each other with the terminal branching unit, the terminal branching unit includes a plurality of ways power sub circuit, the power sub circuit is connected to the need electricity circuit part of washing the robot rather than the electrified water -washed of mains voltage assorted transformer substation's insulator respectively.