架空运行线路现场载流温升试验研究

Locale Test Research on Current Carrying and Temperature-rise of Overhead Circulating Power Transmission Line

作为架空线路载流量研究重要组成部分,在现场对实际重载运行线路进行大幅度负荷调整和载流升温试验研究,重点观测实际线路在不同负荷条件下温升和弧垂变化情况,研究实际线路温升、弧垂变化与负荷电流、环温、风速、日照关系,将观测、计算结果比较,验证建立的载流量计算模型和软件准确可靠、实用性强。

As a part of current carrying capacity study on overhead power transmission lines, the load regulating and temperature-rise test and research on overhead over loading power transmission line on site are carried out, to measure temperature-rise and sag changes when the load changes. The circulating line characteristic of temperature-rise and sag change with the carrying current, temperature of environment, velocity of wind. intensity of sunlight are studied. And the nicety and practicability of model and software established by comparing with the results of calculation are validated.