有串联间隙避雷器放电特性与本体和间隙特性的关系研究  

Study on the Relationship between the Discharge Characteristics and Voltage-current Characteristic and the Gap Characteristics of Arrester with Series Gaps

作　　者：张青蕾[1] 郭洁[1] 余芳[2] 金青[2] 

机构地区：[1]西安交通大学电气工程学院,西安7100492 [2]西安电力高等专科学校,西安710032

出　　处：《电瓷避雷器》2011年第6期108-111,共4页Insulators and Surge Arresters

摘　　要：悬挂式有外串联间隙金属氧化物线路避雷器(以下简称有串联间隙避雷器)是输电线路防雷的重要设备。近年来有串联间隙避雷器在输电线路上得到了广泛应用,研究有串联间隙避雷器的工作特性十分重要。借助比例元件试验对有串联间隙避雷器放电特性、间隙放电特性和本体V-A特性进行了研究,探究了三者间的关系,试验结果表明:工频电压下,有串联间隙避雷器间隙与本体主要依据其等值电容分压;雷电冲击电压下,整体放电电压与间隙放电电压和本体V-A特性有关,电压波陡度越大,本体V-A特性影响越大,前两者的差距越大。It is an important measure to use the arrester with series gaps for lighting protection of transmission lines. Since the arrester with series gaps has been widely used in the transmission lines in recent decades, it is valuable to study the characteristics of the attester with series gaps. The author studies the characteristics of the arresters with series gaps, the discharge characteristics of gaps and the arresters with series gaps to find the relationship between them by proportioning component test. The result shows that the arresters with series gaps and its gaps share the voltage at the power frequency voltage based on their Equivalent capacitances; at the lighting impulse voltage, the discharge voltage is related to the discharge gap voltage and the characteristic of arrester with series of gaps, the larger the gradient of the lightning wave is, the greater characteristic influence of the arrester with series gaps is , hence the bigger the difference between the discharge voltages of the external gap and the entirety is.

关 键 词：有串联间隙避雷器 放电特性 间隙 

分 类 号：TM862[电气工程—高电压与绝缘技术]