中文摘要：

摘绝缘子覆冰严重威胁着电力系统的安全运行，是造成跳闸闪络的主要原因之一，在绝缘子表面部分涂覆半导电涂层是一种新的电热防冰方法。为了进一步量化计算涂层位置对防冰效果的影响，在此方法的基础上，建立了热力学模型，对半导体涂层在大盘径绝缘子（以空气动力型绝缘子为例）表面的配置方式进行了研究。考虑导通概率的影响，对模型进行修正。根据人工气候室中的试验结果，当“空白带”留在绝缘子边沿，并且带宽为5-7cm时效果较好。试验结果基本与计算吻合，表明修正模型能够反映和指导绝缘子表面半导体涂层的配置方式，为实际线路的应用提供了一种探索思路。

英文摘要：

Insulator icing is one of the main reasons for flashover, which seriously threatens the power system security. Semi-conductive room temperature vulcanized （RTV） coatings are partially applied to insulators as a new electro-thermal method for insulator anti-icing. On this basis, an equivalent model was founded on the big shed insulator （aerodynamic insulator） for instance, to discuss the design for the coating. And the conduction probability was considered to revise the model. According to the experimental results, this method worked better when the uncoated-band was next to the edge of the insulator with the width of 5-7cm. The result of calculation agrees with the experimental data, proving that the revised method can be applied to the design of the semi-conductive RTV coating on the insulator, which, also serves as guidance for utilization in the outdoor power system.