Development of Phase Angle Cable Identification Instrument

As the continuous improvement of the level of urban construction in China, more and more overhead lines are replaced by power cables in the distribution network. Therefore, it is particularly important for power enterprises to master and manage the basic data of cables, and cable identification technology is an important basic technology in cable survey and management. The traditional cable identification mostly adopts the amplitude identification technology, there are some problems of low identification accuracy and hidden danger in the actual field application. A research idea of using phase angle identification technology is put forward, and a phase angle cable identification instrument is developed successfully. The principle of electromagnetic induction is used to identify the different phases of the coupling signal through the calculation and analysis of the instrument, and the electrification identification of power cable is realized.