沙尘暴条件下长棒形瓷绝缘子风洞带电积污试验  

Wind Tunnel Test for Contamination Deposited Characteristics of Porcelain Long Rod Insulators Under Sandstorm Circumstance

作　　者：阳林[1] 郝艳捧[1] 李立浧[1] 赵宇明 黎小林 

机构地区：[1]华南理工大学电力学院,广州510640 [2]南方电网科学研究院,广州510080

出　　处：《高电压技术》2010年第11期2651-2656,共6页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724507);国家“十一五”科技支撑计划(2009BAA23B02);中央高校基本科研业务费专项资金项目(2009ZZ0008)~~

摘　　要：为研究输电线路长棒形瓷绝缘子与三伞型瓷绝缘子和复合绝缘子的积污性能差异,根据实际运行的积污数据综合分析了长棒形瓷绝缘子的自然带电积污特性,并利用风洞模拟系统进行了沙尘暴气候环境下长棒形、三伞型瓷绝缘子和复合绝缘子的带电积污试验,对比了不同绝缘子的空气动力学性能。结果表明:在轻污秽地区长棒形瓷绝缘子的积污性能和自洁性优于盘型瓷绝缘子;长棒形瓷绝缘子表面积污的饱和周期较短。在风洞模拟沙尘暴气候环境下,三伞型瓷绝缘子表面积污量最大,复合绝缘子次之,长棒形瓷绝缘子最小。由于具有开放的伞形结构和光滑的瓷表面,在沙尘暴气候环境下,与三伞型瓷绝缘子和复合绝缘子相比,长棒形瓷绝缘子具有最优良的空气动力学特性。In order to compare contamination deposited characteristics among porcelain long rod insulator,three-shed type porcelain insulator and composite insulator,contamination deposited data under nature conditions of porcelain long rod insulator were analyzed.Wind tunnel test system was used to simulate the contamination deposited process of aforementioned three kinds of insulators,for comparing their aerodynamic performances.Research results show that in the light polluted regions,the contamination deposited performance of porcelain long rod insulators is better than that of cap and pin insulators,and the saturated contamination deposited cycle of the former is lower.Under the wind tunnel test conditions,NSDD of three-shed type porcelain insulator is heavier than both porcelain long rod insulator and composite insulator.Thanks to its open profile and slick surface on porcelain insulator,porcelain long rod insulator is best in the aerodynamic performance among the three kinds of insulators.

关 键 词：长棒形瓷绝缘子 沙尘暴 积污特性 空气动力学特性 伞形 灰密 输电线路 

分 类 号：TM216[一般工业技术—材料科学与工程]