高压架空输电线路建设中,由于新工艺(如地面划印、装配式架线等)的出现,愈来愈要求线路建设者更加准确地计算架空线的实际长度。架空输电线线长的计算方法,归纳起来有精确计算法和近似计算法两类。由于精确计算法比较烦琐,而近似计算法亦能满足工程上的精度要求,因此,一般都用近似计算法。但 In the construction of high-voltage overhead transmission lines, line builders are increasingly required to more accurately calculate the actual length of the overhead lines due to the appearance of new processes (such as ground marking and assembly line). Overhead transmission line length of the calculation method, summed up the exact calculation method and approximate calculation method of two categories. Because the exact calculation method is more cumbersome, and the approximate calculation method can meet the engineering requirements of accuracy, therefore, the approximate calculation method is generally used. but