Method to Calculate the Critical Non-Icing Current on Transmission Line Considering the Impact of Humid Air Parameters

Based on the heat balance equation of the transmission line Icing, formula of critical non-Icing current on transmission line is educed in this paper. And to solve the problems of adoption of the physical parameters of dry air in existing methods of calculating the critical non-Icing current on transmission line, a method of calculating the critical non-Icing current on transmission line consider the impact of humid air parameters is presented. The result of simulation experiments show that this method is more connection with reality, and provides a theoretical basis for seeking a more accurate critical non-Icing current. This method has great significance in selecting the cost-effective measures for transmission line anti-icing and transmission line design of the anti-icing.