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。
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