220kV单回路干字型耐张塔绕引跳线长度计算研究  

Research on the caculation of circuitous jumper length of 220 kV single-circuit dry-shaped tensile tower

作　　者：李博 黄国 刘胜春 尚鑫 Li Bo;Huang Guo;Liu Shengchun;Shang Xin(State Grid Inner Mongolia Eastern Electric Power Co.,Ltd.Electric Power Research Institute,Hohhot 010010,China;China Electric Power Research Institute,Beijing 102401,China)

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,内蒙古呼和浩特010010 [2]中国电力科学研究院有限公司,北京102401

出　　处：《山西建筑》2022年第15期127-130,共4页Shanxi Architecture

摘　　要：跳线风偏是近年来频繁发生的风致灾害形式,220 kV单回路干字型耐张塔塔头相对较小,绝缘子串相对较长,绕引跳线形状较为复杂,设计时无法给出绕引跳线的准确长度,只能施工时现场放样,绕引跳线长度常常出现冗余或不足,容易造成绕引跳线风偏故障。通过“铁木辛珂梁理论+非线性有限元迭代法”编制了绕跳计算程序,并在通辽搭建220 kV单回路干字型耐张塔塔头-跳线真型试验装置,模拟了21个不同工况,测得了21个不同工况下的绕跳长度,进而完善绕跳计算方法,使得计算误差在±2%以内,有效指导绕跳设计及施工工作,从根本上降低绕跳风偏故障发生率。The wind deviation of Jumper is the major form of wind-induced fault in recent years. The head of 220 kV single-circuit dry-shaped tensile tower is relatively small, the insulator string is relatively long. The shape of the jumper is complicated. The length of circuitous jumper can not be given exactly, so that the length of the circuitous jumper is often too long or too short in construction, which easily causes the wind deviation fault of the circuitous jumper. In this paper, the jumper calculation program is compiled by Timoshenko beam theory and nonlinear finite element theory. The 220 kV single-circuit tension tower head-jumper true test device is built in Tongliao. The length of the circuitous jumper under 21 different working conditions has been measured. The circuitous jumper calculation program is improved and the calculation error is within ±2%. It can effectively guides the design and construction of the circuitous jumper, which can reduces the fault of jumper wind deviation rate.

关 键 词：绕引跳线风偏 220 kV单回路干字型耐张塔 真型试验装置 

分 类 号：TM726[电气工程—电力系统及自动化]