Distribution Characteristics of Lightning Strike Risk Along Wind Turbine Blades

被引:0
|
作者
Gu J. [1 ]
Chen W. [2 ]
Huang S. [1 ]
He T. [3 ]
Bian K. [2 ]
Shi W. [1 ]
Xiang N. [4 ]
机构
[1] China Electric Power Research Institute, Haidian District, Beijing
[2] State Grid Corporation of China, Xicheng District, Beijing
[3] China Electric Power Planning & Engineering Institute, Xicheng District, Beijing
[4] School of Electrical and Automation, Hefei University of Technology, Anhui Province, Hefei
关键词
blade; blade orientation; lightning risk; propagation model; self-consistent leader inception; wind turbine;
D O I
10.13334/j.0258-8013.pcsee.220354
中图分类号
学科分类号
摘要
Wind turbine blades are exposed to lightning strike damages, thus seriously threatening safe and stable operation of wind farms. Based on self-consistent leader inception and propagation model, in this paper, a calculation method for any position along wind turbine blade by lightning strike is proposed, and a model for the distribution characteristics of downward lightning strikes risks along wind turbine blade is established. The lightning collection area on the ground, and the critical lightning current for shielding failure of the blade tip are defined. Considering lightning current amplitude, blade orientation angle and blade length, the lightning strike risk distributions of wind turbines blades with different capacity are calculated. It is found that the shielding range of blade tip decreases with the reduction of the lightning current amplitude; the critical lightning current for shielding failure of the blade tip decreases with the increase of blade orientation angle; the lightning strike risk of blade tip decreases with the increase of blade length. The blade could be divided into three zones named Z1, Z20 and Z21 according to the blade structure and lightning strike risks. Lightning strike breakdown processes in different lightning strike risk zones are investigated. Therefore, a differentiated lightning protection method is recommended for different lightning strike risk zones of the blade. ©2023 Chin.Soc.for Elec.Eng.
引用
收藏
页码:3651 / 3663
页数:12
相关论文
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