750kV输电线路风偏跳闸原因分析及改造措施研究

杨肖辉,张东,李晓光,董新胜,张振泉,陈艳超

Analysis and Reform Measures of 750kV Transmission Line Wind Biased Tripped

Yang Xiaohui,Zhang Dong,Li Xiaoguang,Dong Xinsheng,Zhang Zhengquan,Chen Yanchao

表2 风压高度变化系数μz

Tab.2 Variation coefficient of wind pressure height μz

离地面或海平面高度/m 地面粗糙度类别 A B C D 30 1.80 1.42 1.00 0.62 40 1.92 1.56 1.13 0.73 50 2.03 1.67 1.25 0.84 60 2.12 1.77 1.35 0.93 70 2.20 1.86 1.45 1.02