湖北区域超特高压输电线路风偏风险评估分析

Windage Yaw Risk Assessment and Analysis of Ultra-high and Extra-high Voltage Transmission Lines in Hubei Region

目前线路所经区域超设计风速情况时有发生,以往采用设计风速作为基准风速进行风偏校核的方式已不满足实际需求。国网湖北省电力有限公司检修公司对所辖19 000余基杆塔按超设计风速5%进行风偏校核,对校核结果进行了分析统计,明确了各类塔型塔头尺寸、Kv值等对风偏风险的影响,提出了风偏治理建议。

At present, the situations of exceeding designing wind speed has occurred frequently.The way that the design wind speed is used as the reference speed is not satisfied with the actualdemand. State Grid Hubei maintenance company checked the windage yaw for more than 19 000 towers by adopting the 5%exceeding designing of wind speed as the reference wind speed, the results of verification are analyzed and counted, the influences of tower type,tower head size and Kvvalue are clarified, some suggestions for windage yaw management are proposed.