大型风力发电机组的防雷保护综述

Overview about Lightning Protection Overview of Large Wind Turbine

随着风力发电机组单机容量的不断增大,风机轮毂高度和叶片高点也在不断增高,在旷野、山顶和沿海地区,风机遭受雷击的概率非常大。从各风场反馈的情况来看,雷击不但是造成风机故障停机的重要因素,甚至直接影响风电场的安全运行。本文首先从雷电的破坏机理和形式入手,对雷电的防护区域进行了划分,并提出了风力发电机组的防雷保护设计原则和防雷系统工程方案;而后对风机整机系统的防雷保护进行了系统的分析,并提出了具体的防雷保护方法。

With the increase of wind turbine capacity, the hub height and leaf high point of wind turbine also increased constantly, the lightning probability of wind turbine is very big at the top of the mountain, coastal areas and wilderness. According to the wind farms feedback, lightning is not only important factors causing wind machine downtime, or even directly affect the safe operation of wind farms. This paper divided the protection area of wind turbine from the destruction mechanism and the forms of lightning, and puts forward the wind turbine lightning protection design principle and lightning protection systems engineering project; then system analysis is made on lightning protection of wind turbine system, and puts forward the specific methods of lightning protection.