Research on Application of High-Frequency Coupler in Monitoring Unit of Circuit Patrol Monitor

In recent years, power electronics industries have developed rapidly, and new electromagnetic materials have been continuously used. As the core component of electronic components, the high-frequency coupled magnetic core is the main component in the manufacture of current transformers and other devices. In this paper, we have developed a monitoring unit for circuit patrol monitor. It uses materials owning broadband, constant conductance, and low loss as the magnetic core of the high-frequency coupler, which improves the accuracy of loop state monitoring. The monitoring unit can realize the accurate identification of normal connections, open circuits, short circuits, and loop rectification of the transformer under different loads, provide a scientific basis for industrial and commercial power quality monitoring, and regulate the user’s electricity consumption behavior.