Overview of energy supply technologies for overhead transmission line monitoring equipment

With the development of smart grid technology, higher requirements are put forward for the power supply mode of monitoring equipment for overhead transmission lines. This paper comprehensively analyzes the basic structure, working principle, advantages and limitations of various energy supply technologies of current on-line monitoring equipment for transmission lines. Among them, the high power output and stability of electromagnetic induction energy extraction technology become the ideal choice of monitoring equipment for overhead transmission lines.