文中从水电联络线、水电站、用户3 个方面分析了目前分布式水电电网防雷存在的问题，对比分析了水电联络线和普通线路的雷击风险构成和风险分担的差异，给出了雷击风险指标; 从雷击暴露、线路跳闸可能性和损失3 个方面建立了含分布式水电电网的雷击风险评估模型．用所建模型对多水电电网韶关电网进行评估，结果显示: 与普通线路相比，雷击风险主要集中在水电联络线上，雷击水电联络线可导致高失负荷，同时可造成巨大的可再生资源浪费．最后，指出智能的分布式电网和电力市场是解决高雷击风险的根本途径，并提出了一些降低雷击风险的措施．

In this paper,the existing lightning strike protection problems of distributed hydropower grid are analyzed in terms of grid-connected hydropower lines,hydropower stations and customers,and the lightning strike risk composition and risk sharing differences between grid-connected hydropower lines and normal ones are presented. Then,the lightning strike risk index is proposed. Moreover,a lightning strike risk evaluation model for the power
grid with distributed hydropower is established,which considers the lightning strike exposure,the probability of line failure,and the losses. Finally,this model is used for evaluating Shaoguan power grid which contains various hydropower stations. It is found that lightnig risks mainly occcur on the grid-connected hydropower lines rather than the normal ones,and that lightning strikes may result in high power failure and severe waste of renewable resources. The paper points out that such lightning strike risks can only be avoided by building smart distribution grids and enhancing the electricity market. To this end,several measures to reduce lightning strike risks are also proposed.