Interlocking system for switching power supply between charging rod and contact network

,The invention provides an interlocking system for switching power supply between a charging rod and a contact network. The system comprises a charging rod, a contact network, a charging station and an intelligent locking device, and is characterized in that the charging rod is arranged in a charging area and is connected with the charging station through a contactor C01, the contact network is provided with an insulating section at the boundary of the charging area the contact network in the charging area is connected with a contact network outside the charging area through a contactor C02, the intelligent locking device is connected with the contactor C01 and the contactor C02, and the intelligent locking device is used for controlling one of the charging rod in the charging area and the contact network to supply power. An energy storage type rail train enters and exits the detection device so as to detect train entering and exiting; the intelligent locking device receives a train in-out station signal coll