架空线路在平行于相邻两杆塔间导线所受比载的平面内的两悬挂点之间的水平距离，为这两基杆塔的档距。
并提出了两种新次档距振荡控制方案的构想。
At last, two new tentative control schemes for subspan oscillations are presented.
铝绞线适用于受力不大，档距较小的一般配电线路。
Aluminum-twisted is suitable for the common overhead power lines with the smaller distance and less force.
输电线路的接地电阻，线路档距等因素对线路型避雷器的应用有影响。
Tower grounding resistance, distance between towers, etc can affect the function of line-surge arrester.
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