The Design Of A New Suspended Type Communication Power Supply For HV Cable Based On Electromagnetic Induction

In electric power system,it is common that power supply of high voltage side electric circuit proved to be still difficult in the existing real-time monitoring systems for the temperature of HV cable joint and transmission-line state parameters,etc.A novel power supply scheme is developed in the paper aiming at the above circumstance. Extra compensation core and coil are introduced into the scheme based on the traditional electromagnetic induction project.There is a large difference depending on initial permeability between the material of draw-out core and compensation core.The two cores are reverse concatenation in the circuit which is also designed in detail.Besides,a new self-made power structure and mold is proposed,which is convenient in installation and maintenance.Through half year's operating tests,the results indicate that the two difficulties are solved in the scheme,which are unstable power supply outputs throughout the large current range and high power.And the power supply avoids the deep saturation and provides guarantee facing the impulse current.