Lightning shielding failure is the main factor to threat the safety and reliability of EHV transmission lines.
雷电绕击是危及超高压输电线路安全稳定运行的主要原因。
Several units calculate the UHV transmission line shielding failure trip ratio with the leader propagation model (LPM).
国内外也有多个单位研究使用先导传播模型（LPM）计算特高压线路雷电绕击跳闸率。
And it shows that the shielding failure rate is a function of the ang1e of lightning incidence, strokes lightning amplitude and ground ang1e.
分析并计算了因雷电流的幅值和雷电先导入射角，以及地面倾角变化对绕击率的影响。
The electrogeometric model (EGM) described with striking distance has been widely used in the shielding failure analysis of transmission line.
使用击距描述的电气几何模型广泛用于输电线路的雷电绕击分析。
This paper brief discuss the theory of lightning shielding and analyzes the calculation method of shielding failure rate of transmission line.
简要论述了雷电屏蔽理论，分析了输电线路绕击率的计算方法。
Shielding failure is the main reason to cause flashover of the UHV transmission line, so that the shielding angle of grounding wires should be reduced, especially in mountain area.
绕击是造成特高压线路跳闸的主要原因，尤其在山区应适当减小地线保护角。
With such model the effect of tower structure, lightning current amplitude, angle of the lightning incidence, as well as the ground angle on the shielding failure rate are analyzed.
应用改进的电气几何模型分析了输电线路杆塔结构、避雷线和导线的布置、雷电流的幅值、地面倾角对绕击率的影响。
This passage also points out that the way of enlarging ground wire's equivalent radius can reduce the rate of shielding failure and enhance the security and stability of the transmission lines.
本文提出增大避雷线的半径的方法，可以减少输电线路的绕击率，从而提高输电线路的安全、稳定性。
The principal cause of lightning stroke failures occurred in UHV transmission lines is the shielding failure, so it is suggested to adopt the negative protecting Angle for UHVDC transmission lines.
引起特高压输电线路雷击故障的主要因素是雷电绕击，建议特高压输电线路采用负保护角运行。
So they try to protect you by shielding you the possibility of failure, which, in effect, also shields you the possibility of making your dreams a reality.
所以他们试图想要保护你而削减你失败的可能性，实际上，他们也在削减你使胡想成真的可能性。
Most parents work hard at either preventing failure or shielding their children from the knowledge that they have failed.
大多数家长不是竭力防止失败就是竭力不让孩子们知道他们已经失败。
So they try to protect you by shielding you from the possibility of failure, which, in effect, also shields you from the possibility of making your dreams a reality.
所以他们试图想要保护你而减少你失败的可能性，实际上，他们也在减少你使梦想成真的可能性。
One-part implant widely used for osseointegrated artificial lower limb attachment would lead to osteoporosis caused by stress shielding after a long time of implantation, and result in failure.
应用于植入性下肢假肢的骨植入体多为一段式结构，长期使用下产生的应力屏蔽效应容易引起骨质疏松，继而导致植入体植入失败。
So they try to protect you by shielding you from the possibility of failure, which, in effect, also shields you from the possibility of making your dreams a reality.
所以他们希望保护你，阻止你迈向可能出现的失败，但这实际上也阻止了你的梦想的实现。
So they try to protect you by shielding you from the possibility of failure, which, in effect, also shields you from the possibility of making your dreams a reality.
所以他们希望保护你，阻止你迈向可能出现的失败，但这实际上也阻止了你的梦想的实现。
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