Application Status and Development Analysis of Laser Ice Melting Technology for Transmission Lines
Transmission line icing will cause tower collapse and power grid line breaking,which is the main threat to the normal operation of the power grid in winter,and it is necessary to take de-icing measures in time to prevent line damage.Laser is a new and efficient power grid de-icing method with non-contact,fast speed,high energy transmission,and conversion efficiency.In this paper,the mechanism of laser ice melting is explained from the perspective of energy absorption and distribution,the laser energy conversion process is described by the Beer-Rambert law,and the variation of ice center temperature with time is obtained.The effects of wavelength,power,spot diameter,and other parameters on the ice melting efficiency were analyzed,and it was shown that the surface reflectivity of the ice layer,the scattering rate,and the absorption rate of internal impurities and other factors jointly affected the energy coupling efficiency of the laser,and the loss of the laser on the icing equipment also needed to be evaluated and optimized.The rapid development of the performance of high-power lasers,especially fiber lasers,makes it possible to apply laser ice melting in the power grid.
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