从两起导线断线事故着手，分析了断线的客观外部因素及隐含的内在因素，并提出了综合的防范措施。
From two accidents of lead break line it analyses its out objective factor and critical inner factor, give summrized preventive measure.
输电线路覆冰可引起导线舞动、杆塔倾斜、倒塌、断线及绝缘子闪络等问题。
Transmission line regelation may cause conductor galloping, pole leaning or collapse, conductor breaking or insulator flashover etc.
断线过电压一般发生在配网中，与配网导线较细、杆塔较低、宜受外力破坏有关。
Broken wire overvoltage usually happens in distribution power grid because the wires in such grid are easily damaged by outer forces due to the thinner conductors and lower wire pole.
分析表明，断线的冲击荷载将对导线和输电塔均产生较大的动力放大效应，风荷载将加剧断线引起的振动。
The results show that the dynamic impact loads on broken wire cases will magnify response of the conductors and tower. Wind loads will aggravate the vibration caused by the sudden cable rupture.
分析表明，断线的冲击荷载将对导线和输电塔均产生较大的动力放大效应，风荷载将加剧断线引起的振动。
The results show that the dynamic impact loads on broken wire cases will magnify response of the conductors and tower. Wind loads will aggravate the vibration caused by the sudden cable rupture.
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