雷击是引发输电线路跳闸故障的主要原因之一,严重影响电网安全稳定运行。为有针对性地指导输电线路的防雷设计和改造,文中提出了基于多因素驱动的输电线路区域雷击跳闸风险评估方法。首先,综合考虑气象、电网、环境影响因素,构建完整有效的样本空间;其次,基于6种较优回归算法(XGBoost、RF、Bagging、GBRT、DT及KNN),对样本数据进行训练及验证;然后,选取拟合优度最高的XGBoost算法构建输电线路区域雷击跳闸风险评估模型;最后,算例结果表明:雷击故障点落在风险区域占75 ...
范凯 +4 more
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