考虑耐张串效应的特高压线路导线弧垂的理论解

在特高压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，本文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。

Research on the Calculation of Sag of Conductorwiththe Tension Insulator Stringin the UHV Line Based on the Catenary Method

In the UHV(Ultra High Voltage) overhead transmission line project, 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 moment balance method will be considerably reduced. In this paper, in order to obtain the calculation method of catenary sag considering tension insulator string, the equation of catenary line including the sag of tension insulator string wire is established, which is an accurate theoretical equation with high accuracy, and compared with the traditional simply supported beam method, and combined with the field measurement of the project, the maximum difference between the theoretical calculation results and the measured results is 1.97%, which verifies the correctness of the catenary method.