A ground rail tram
control system comprises a ground rail, a tram, a
drive motor, a power supply circuit, a
power control circuit, a flat vehicle power supply circuit and a flat
vehicle control circuit. The power supply circuit is connected between commercial power and the ground rail, the
power control circuit is connected to the power supply circuit in parallel, an
overcurrent relay is arrangedin the
power control circuit, a normally-closed contact of the
overcurrent relay is connected with the power supply circuit in series, a coil of the
overcurrent relay is further connected with the low-
voltage output end of a step-down
transformer in series, the flat vehicle power supply circuit is connected between the ground rail and the
drive motor, and the flat
vehicle control circuit is connected to the flat vehicle power supply circuit in front of the
drive motor in parallel. By the adoption of the
control system, an overcurrent protection device is erected on the low-
voltage side of thestep-down
transformer of the ground rail where the tram runs, the situation that the
transformer is burnt out due to overcurrent is avoided, so that the maintenance cost of equipment is reduced, and the situation that production efficiency is low due to equipment faults is avoided as well.