连续倾斜地形调整观测弧垂及附件安装位移的计算方法

Regulation of Observed Sag on Continuous Slant Topography and Calculation Method for Installation Displacement of Attachments

随着电力建设的发展,输电线路的走廊多是建在高山峻岭上,线路断面的相对高差很大,势必导致紧线时的观测弧垂,不能按照常规的方法进行计算。为此,针对新建的500 kV线路,在张力紧线时观测弧垂的计算,推荐按连续上(下)山计算的判别方法,在施工时进行观测弧垂调正及悬垂线夹安装位置计算。应用此法,在山区较为便捷,加快紧线和附件安装的速度,同时,亦减少返工量并取得很好的经济效益。可在新建的500 kV线路施工连续倾斜的走廊地形中推广应用。

With development of power construction in China the corridors for transmission lines are built on the mountains and hills mostly with great relative height difference of the line sections. So the measured sag for conductor stringing can not be calculated according to the conventional method. Pointing to calculation of the measured sag for stringing of new 500 kV lines under tension the author recommends a distinguishing method of continuous up （down） hill calculation, i.e. regulation of measured sag and calculation of installation position for suspension clamps during construction. The method is effective relatively for mountain areas, which can speed up the line stringing and installation of attachments. It is of good economic benefits and worth to be populirized in continuous slant corridors for new 500 kV lines.