典型防鸟装置对输电线路绝缘子积污特性的影响

Influence of Typical Anti-bird Devices on Contamination Accumulation Characteristic of Insulator for Transmission Line

为了研究防鸟装置对绝缘子积污特性的影响,利用流体场分析理论,通过设置污秽体积分数,建立绝缘子动态积污模型,分析风倾角以及降雨冲刷系数对安装典型防鸟装置条件下绝缘子积污特性的影响,揭示典型防鸟装置对输电线路绝缘子积污特性的影响机理,并利用人工积污试验进行验证。结果表明:由于防鸟罩安装在绝缘子正上端,对绝缘子具有一定遮挡作用,安装防鸟罩会加重第1片绝缘子上表面的积污,但对其他绝缘子影响不大;由于防鸟挡板与绝缘子相距较远,安装防鸟挡板对绝缘子的积污影响较小。

In order to study the effect of anti-bird devices on the contamination accumulation characteristic of insulator,we established a dynamic contamination accumulation model of insulator by setting the contamination volume fraction using the fluid field analysis theory.The influence of wind inclination angle and rainfall scouring coefficient on the contamination accumulation characteristic of insulator installing typical anti-bird device were analyzed,and the effect mechanism of typical anti-bird device on the contamination accumulation characteristic of transmission line insulator was revealed and verified by artificial pollution test.The results show that because the cover of bird-guard is installed at the upper end of insulator,it has a certain shielding effect on the insulator.Installing the cover of bird-guard will aggravate the contamination accumulation of the first insulator top surface,but it has little effect on the other insulators.Because the shield of bird-guard is far away from the insulator,installing the shield of bird-guard has little effect on the contamination accumulation of insulator.