考虑耐张串效应的特高压线路导线弧垂的理论解  

Theoretical Solution of Conductor Sag in Ultra High Voltage Transmission Line Considering Tension String Effect

作　　者：赵腾飞[1] 包华 张雷[1] 杨垂玮 周贺 黄模佳[1] ZHAO Teng-fei;BAO Hua;ZHANG Lei;YANG Chui-wei;ZHOU He;HUANG Mo-jia(Department of Engineering Mechanics,Nanchang University,Nanchang 330031,China;China Energy Engineering Group Anhui Electric Power Design Institute Co.,Ltd.,Hefei 230601,China)

机构地区：[1]南昌大学工程力学系,南昌330031 [2]中国能源建设集团安徽省电力设计院有限公司,合肥230601

出　　处：《科学技术与工程》2020年第30期12512-12519,共8页Science Technology and Engineering

基　　金：国家自然科学基金(11572147,51568046)。

摘　　要：在特高压(ultra high voltage,UHV)架空输电线路工程中,导线弧垂的计算必须考虑耐张绝缘子串的影响。随着耐张绝缘子串的串长和串重的增大,传统的抛物线法和力矩平衡法计算导线弧垂的准确性将大大降低。为了得到考虑耐张绝缘子串的悬链线弧垂的计算方法,建立包含耐张绝缘子串导线弧垂的悬链线方程,该方程为精确理论方程,精确度高;并与传统的简支梁法对比分析,最后结合工程现场实测,理论计算结果与实测结果最大相差1.97%,验证了悬链线法的正确性。In the construction of a UHV(ultra-high voltage)overhead transmission line,the influence of strain insulator string must be considered in the calculation of conductor sag.With the increase of the string length and weight of the strain insulator string,the accuracy of the traditional parabola method and the moment balance method could be considerably reduced.To obtain the calculation method of catenary sag considering the tension insulator string,a high-accuracy equation of catenary line including the sag of tension insulator string wire was established and compared with the traditional simple-support beam method.The maximum difference between theoretical calculation and field measurement reached 1.97%only,verifying the applicability and effectiveness of the catenary method.

关 键 词：特高压 耐张绝缘子串 弧垂 力矩平衡法 悬链线 

分 类 号：TU323.4[建筑科学—结构工程]