架空输电线路紧线张力计算研究  

Study on Tension Calculation of Overhead Transmission Lines

作　　者：陶蕾 张楠[1] TAO Lei;ZHANG Nan(North China Power Engineering Co.,Ltd.,of China Power Engineering Consulting Group,Beijing 100120,China)

机构地区：[1]华北电力设计院,北京100120

出　　处：《电工技术》2018年第15期45-49,共5页Electric Engineering

摘　　要：针对现有弧垂观测法紧线的不足,提出一种基于精确控制导线长度进行紧线的新方法。首先通过幂级数展开法,求解紧线前导线弧形的双曲余弦方程;再基于目标弧垂值,利用迭代逼近法推导出目标弧形的方程;然后在判定目标方程的最大应力不超过标准限值后,根据所求的紧线前后方程,计算导线需要紧线的长度;最后利用等效替代法对导线的紧线长度进行修正,使修正后的紧线长度更加精确。在某10kV线路上的应用效果,验证了该方法的精确性。To solve the problem of existing vertical sag method, a novel method based on precise control of conductor length was proposed to. First, through the power series expansion method, the hyperbolic cosine equation of tension arc of front wie was solved. Then by target sag, the equations of the target arc were derived by iterative approximation meth od. Determining the target equation and the maximum stress does not exceed the standard limits. According to the request before and after the tight line equation, the need tight line length was calculated. Finally, the equivalent replacement method was used to correct the tight line length of the conductor, so that the corrected tight line length was more accu rate. This method was used to tighten the line on a 10kV line, and the accuracy of the method was verified.

关 键 词：配网导线 弧垂 导线紧线长度 幂级数展开法 迭代逼近法 

分 类 号：TM752[电气工程—电力系统及自动化]