Power supply arm wiring system and anchor articulated type split-phase system

The invention discloses a power supply arm wiring system and an anchor articulated type split-phase system. The power supply arm wiring system and the anchor articulated type split-phase system are provided with a plurality of neutral power supply arms in an electric split-phase area in an out-phase power supply mode; the neutral power supply arms are respectively connected with a first power supply feeder line. In a cophase supply mode, a plurality of neutral power supply arms are switched on to ensure that the electric locomotive which passes through the electric split-phase area is continuously supplied with power; when the cophase power supply system cannot work normally, a plurality of neutral power supply arms are disconnected with the first power supply feeder line to realize the power failure of the electric split-phase area and ensure enough electric separation among out-phase power supply arms in an out-phase power supply mode; and the out-phase current is respectively inputted into the first power supply feeder line and a second power supply feeder line, so as to realize rapid switching from the cophase power supply mode to the out-phase power supply mode, thereby the electric locomotive is driven normally is effectively guaranteed.