Line identification system

The invention discloses a line identification system, aims at recognizing a PLC power line, and relates to the technical field of electrical engineering. The system comprises a signal transmission module, a signal receiving module, a signal detecting module and a displaying module, wherein the signal transmission module is connected with the PLC power line and used for transmitting a line detecting commanding signal, the signal receiving module is connected with the PLC power line and the signal detecting module and used for receiving the line detecting commanding signal, the signal detectingmodule is used for recognizing a line detecting command and detecting line faults of the PLC power line, and the displaying module is used for connecting the signal detecting module and used for display a recognizing result and a judging result. The system has the advantages that the accuracy of the recognizing result is improved through the system, the system is applied to different measuring manners, the operation perfo