Abstract: Transmission line icing is one of the important issues affecting the safe operation of power grids. Accurate monitoring of conductor icing can effectively prevent icing disasters. The influence of natural wind on the measurement of the ice load of transmission lines cannot be ignored. The transmission line tension sensor often measures the ice and wind load of the conductor. Therefore, in order to accurately measure the ice load of the conductor, the influence of the wind load must be eliminated. In this paper, the calculation method of the ice weight based on the dynamic tension of the conductor is studied, and the ice coating weight of the conductor is calculated without using the conductor angle parameter. Through the conductor mechanical analysis, the quantitative relationship between instantaneous wind load, ice load, temperature change and conductor end tension is determined. Considering the icing conductor as a whole, the wind load coefficient Kf is proposed to calculate the wind load under different icing conditions, and based on this, the calculation method of the icing weight of the conductor under instantaneous wind is determined. Field icing experiments were carried out to verify the effectiveness of the method. The research shows that the change of the tension at the end of the conductor is related to the instantaneous wind load, ice load and temperature change; the degree of fitting of the cubic polynomial between the wind load coefficient and the instantaneous wind speed is very high. When the wind speed is the same, the wind load coefficient is positively related to the windward area of the iced conductor; the accuracy of the calculation method of the ice weight of the conductor in the case of no wind and wind meets the requirements of engineering calculation; when the ice is thin, the error of artificial ice weight measurement is large, when the icing is thick, the icing on the insulators and fittings will cause a large error in the calculated value.