Experimental Analysis and Engineering Design of Laser Removing Technology for Extra Matters on Overhead Lines

This paper proposes a convenient and safe method for removing extra matters on overhead lines by distantly irradiating the extra matters with high-energy laser beam. Theoretical study and field experiments on the feasibility of this method were carried out according to the thermal properties of the main components of overhead lines and common extra matters on them. Results show that infrared laser is a better choice to be used to remove the extra matters than ultraviolet and visible laser lights. Experimental results also indicate that there is a large feasible scope of laser power density in which common extra matters can be efficiently removed while the conductors and grounding lines get no harm. Moreover, preliminary design of the laser removing system is given in this paper for practical application.