System and method for whole-line one-key start and stop of long-distance pipeline

The invention discloses a long-distance pipeline whole-line one-key start and stop conveying system and method. The system comprises a central control device which is arranged at a main control center of the long-distance pipeline and is configured to send an instruction to a water hammer programmable logic controller; the water hammer programmable logic controller is arranged at a certain station yard of the long-distance pipeline and is configured to receive an instruction sent by the central control device and instruct the station control device to start and stop conveying according to a built-in program; and the station control device is arranged at each station yard of the long-distance pipeline and is configured to control the corresponding station yard to start and stop transportation according to the indication of the water hammer programmable logic controller. Through communication and logic programs among the central control device, the water hammer programmable logic controller and the station cont