基于热效应的绝缘子防冰技术环境适用性的试验研究

Experimental Research on Environment Applicability of Insulator Anti-icing Technology

通过试验研究了一种应用于悬式绝缘子的发热防冰技术的自然覆冰环境下的适用性。将一种具有半导体特性的硅橡胶材料涂刷于绝缘子的特定位置,可以在冰雪气候条件下降低绝缘子表面电阻,引起沿面放电并发热,在绝缘子表面干燥的情况下表面电阻则恢复至正常水平,从而控制发热防冰引起的能量损耗。通过分析影响防冰效果的几个自然环境因素和人为可控的因素,分别讨论其对防冰效果的影响以及数量关系。最后根据绝缘子表面电阻串联模型,确定防冰涂层优化设计方法。

By means of experiment,a study on applicability of heating anti-icing technique applied for suspension insulators under natural icing environment was conducted. A king of silicone rubber material provided with characteristic of semicon-ductor was brushed on specific position of the insulator which might reduce surface resistance of the insulator under ice and snow weather and cause surface charging and heating. Meanwhile,surface resistance recovered normal in the case of insula-tor surface drying which accordingly was able to control energy loss caused by heating anti-icing. By analyzing natural envi-ronment factors and artificial controllable factors that might affect anti-icing effect,impact on anti-icing effect and quanti-tative relation was respectively discussed. According to series model of insulator surface resistance,optimization design method for anti-icing coating was confirmed.