纵向不平衡张力对双联Ⅰ型悬垂串选型的影响  

The Influence of the Longitudinal unbalanced Tension on the Selection of Duplex I-type Suspendion Strings

作　　者：孙才华 韩伟锋 Han Wei-feng

机构地区：[1]国网河南省电力公司,河南郑州450052 [2]中国电建集团河南省电力勘测设计院有限公司,河南郑州450000

出　　处：《电力系统装备》2021年第24期187-188,共2页Electric Power System Equipment

摘　　要：为提高电网安全生产水平,超高压输电线路的I型复合绝缘子悬垂串应采用双联及以上设计。通过理论分析和计算,研究了双联I型悬垂串绝缘子在不平衡张力下的受力情况,在不平衡张力作用下,双联单线夹I型悬垂串的两肢绝缘子受力不均。通过对某工程实例进行计算,认为选择绝缘子额定机械破坏负荷时,不平衡张力的影响不容忽视。In order to improve the production safety of power grid,the I-type composite insulator suspension strings of extrahigh voltage(EHV)transmission line should be designed with duplex or above.This paper studies the stress on the composite insulator of duplex I-type suspension string under the influence of the longitudinal unbalanced tension.Through an engineering example,it is considered that the of the longitudinal unbalanced tension can not be ignored when selecting the rated mechanical failure load of the composite insulators.

关 键 词：输电线路 双联悬垂串 不平衡张力 

分 类 号：TM216[一般工业技术—材料科学与工程]