【摘要】 双导体制热地线是一种新型地线，其理论与应用研究尚处于起步阶段，目前没有成熟的融冰电流与融冰时间计算方法。首先根据双导体制热地线覆冰后的组成结构建立传热方程，计算各层介质的稳态温度；然后基于水的相变吸热、对流换热等物理过程构建热量方程，再根据地线焦耳热功率与热平衡原理推导出双导体制热地线融冰电流与融冰时间计算方法。最后，通过实验验证所推导的计算方法。实验结果表明，所推导的融冰时间比实验融冰时间稍长，但呈固定比列。用实验融冰时间与理论融冰时间之比作为修正系数计算得到的融冰时间与实验融冰时间接近。更多还原

【Abstract】 The dual-conductor heating ground wire is a novel type of ground wire,and its theoretical and applied research is still in its infancy. Currently,there is no mature method for calculating the de-icing current and de-icing time. Firstly,based on the structural composition of the dual-conductor heating ground wire after ice coating,a heat transfer equation is established to calculate the steadystate temperature of each layer of the medium. Then,a heat equation is constructed based on physical processes such as the phase change heat absorption and convective heat transfer of water. Subsequently,a calculation method for the de-icing current and de-icing time of the dual-conductor heating ground wire is derived based on the Joule heating power and thermal balance principle. Finally,the derived calculation method is validated through experiments. The experimental results show that the derived de-icing time is slightly longer than the experimental de-icing time but maintains a fixed ratio. By using the ratio of the experimental de-icing time to the theoretical de-icing time as a correction factor,the calculated de-icing time closely matches the experimental de-icing time.更多还原