倒V型绝缘子串受力分析及应用建议  

Application Suggestion and Force Analysis of Backward V-type Insulators

作　　者：赵全江[1] 徐维毅[1] 刘文勋[1] 周魁[1] ZHAO Quanjiang XU Weiyi LIU Wenxun ZHOU Kui(Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group Corporation, Wuhan 430071, Hubei Province, China)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,湖北省武汉市430071

出　　处：《智能电网》2017年第2期142-146,共5页Smart Grid

摘　　要：在调爬技改工程中,顺线路方向倒V型绝缘子串具有一定优势。新建特/超高压线路的合适地段采用倒V串,可以达到减小横担长度、缩减塔头尺寸的目的。对倒V串的受力分析计算方法进行探讨,并以特高压直流线路目前常用的1 250 mm^2导线为例,计算倒V串绝缘子在不同工况下的线夹握力及绝缘子串强度,分析张力取值、垂直档距、绝缘子串夹角等因素的影响,提出倒V型绝缘子串的使用条件。Backward V-type insulators have certain advantages in creep distance adjustment project. In newly built UHV and EHV transmission line project, the use of backward V-type insulators can reduce the length of crossarm and the size of tower head. This paper discusses the method of force calculation and analysis of backward V-type insulators, and taking 1 250 mm^2 conductors which are widely used in UHV DC transmission line projects as an example, it calculates the force of insulator string and grip of clamps. It also analyzes the effects of tension value, vertical span and the angle of insulators, etc. Finally, this paper puts forward the service conditions of backward V-type insulators.

关 键 词：输电线路 倒V串 绝缘子受力 线夹握力 

分 类 号：TM75[电气工程—电力系统及自动化]