The present invention relates to the technical field of power line carrier communication, and discloses a dedicated network
system for in-
station communication based on power line carrier and an interactive method. The dedicated network
system includes a rack-mounted management
machine, a distribution network / collection
master station, a carrier communication host, a carrier communication slave, a terminal device, and a coupler, and includes the following steps: step 1, power on and time calibration; step 2, request login; step 3, request detection; step 4, report the detection result; step 5, report the request for networking; step 6, report the
handover networking
frequency band; step 7, report the switching networking
frequency band; step 8, wait for the main management board command. Through the interactive communication between the main management board and the slave management board of the rack-mounted management
machine, unified management of each line of the substation is achieved, and the networking
frequency band used by each line is uniformly allocated, so as to avoid the problem of mutual interference between multiple lines when networking at the same time, so that multiple lines of the substation can be networked and operated normally under limited frequency band conditions, and the stability of power communication is guaranteed.