不同环境因素对复合绝缘子憎水性影响的研究  

Study on the Effect of Environmental Factors on Hydrophobicity of Composite Insulator

作　　者：许竟 高波[1] 宋臻杰 尹现彬 吴广宁[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《高压电器》2018年第2期103-109,共7页High Voltage Apparatus

摘　　要：为研究复合绝缘子在不同环境中憎水性的变化规律,搭建了复合绝缘子试验平台,模拟电晕放电,盐密、灰密,磨损等环境因素,并采用静态接触角法和喷水分级法,测试了憎水性在不同环境中的丧失和恢复特性。试验结果表明:电晕放电会导致复合绝缘子憎水性呈现出先线性后缓慢的下降趋势,在电晕放电停止后,憎水性呈现出先线性上升后趋于稳定的恢复特性;而电晕老化的加剧会导致部分试品无法恢复到初始的憎水性能;憎水性在不同盐密、灰密下呈现出先近似指数上升后趋于稳定的迁移特性;高灰密时憎水性迁移速度更快并且稳定后达到更高的静态接触角值。磨损会导致憎水性的下降甚至丧失,而喷水分级法比静态接触角法更为适合来评定磨损对憎水性的影响。In order to study the variation of hydrophobicity of composite insulator in different environment,a com-posite insulator test platform is set up in the laboratory environment,the corona aging,equipment salt deposit density（ESDD）,non soluble deposit density（NSDD）salt and wear are simulated and the static contact angle method and wa-ter spray classification method are also used to test the loss and recovery characteristics of hydrophobicity in differentenvironment. Results shows that corona discharge can cause the hydrophobicity of composite insulator exhibits atrend of an approximate linear in the first and a stable decrease,after the corona discharge is stopped,hydrophobici-ty exhibits a recovery characteristics of a linear increase in the first and then a stable increase,and the aggravation ofcorona aging will lead some of the simples can not return to the initial static contact angle. The static contact angle ex-hibits a transfer characteristics of an approximate exponential increase in the first and then tends to be stable after ESDD and NSDD. When the NSDD is high,the transfer velocity of the static contact angle is much faster and the stat-ic contact angle is higher. Wear can cause a decrease and even a temporary loss of hydrophobicity. The water sprayclassification is more suitable to evaluate of the effect of wear on hydrophobicity than the static contact angle method.

关 键 词：复合绝缘子 憎水性 静态接触角 电晕 盐密 灰密 磨损 

分 类 号：TM216[一般工业技术—材料科学与工程]