scholarly journals Developing a Novel Ice Protection System for Wind Turbine Blades Using Vibrations of Both Short and Long Wavelengths

2015 ◽  
Author(s):  
Hossein Habibi ◽  
Graham Edwards ◽  
Liang Cheng ◽  
Haitao Zheng ◽  
Adam Marks ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Protection System ◽  
Wind Turbine Blades

scholarly journals Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine Blades

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 1020
Author(s):  
Xin-kai Li ◽  
Jin-xue Guo ◽  
Xiao-ming Chen ◽  
Ke Yang ◽  
Tian-yu He ◽  
...  
Keyword(s):  
Electric Field ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Protection System ◽  
Aerodynamic Noise ◽  
Lightning Protection ◽  
Lead Wire ◽  
Wind Turbine Blades ◽  
Damage Rate ◽  
Noise Characteristics

In order to tackle the problem of the high failure rate of blades of large wind turbine units due to lightning damage, a new lightning protection system (NLPS) for wind turbine blades is proposed based on the lightning damage mechanism of blades. Firstly, 10 high-voltage discharge tests are performed for blades with and without the NLPS to study the effect of lightning protection. The results show that when the surface of the blade without the NLPS is struck by lightning 10 times, the damage rate of the blade is 100%; for the blade with the NLPS and the lightning attachment position is always on the NLPS in 10 discharge tests, the damage rate of blades is 0% and the lightning protection rate of blades is 100%, indicating that the lightning protection effect for blades with the NLPS is greatly improved. Moreover, the static electric fields of the blades with and without the NLPS are calculated. The results show that the NLPS can shield the electric field around the lower lead wire of the blade, thus effectively reducing the electric field intensity. The NLPS initiates the upward leader more easily than the lower lead wire; therefore, the lightning attachment point is located on the NLPS, thus protecting the blade. Secondly, the aerodynamic and aero-noise characteristics of the blade with and without the NLPS are calculated. The results indicate that the NLPS has little influence on the aerodynamic performance of the blade but has some influence on the aero-noise of the blade. The aero-noise of the airfoil can be reduced at angles of attack of 4°, 8°, 11°, and 15°, but the influence of different phase angles of the airfoil on the amplitude of the sound pressure level (SPL) varies. The aero-noise of the airfoil with the NLPS decreases by 16% and 8% at angles of attack of 4° and 8°, respectively. In general, the design of the NLPS reaches the desired requirements, but it still needs to be further optimized in combination with the blade manufacturing process.

scholarly journals Experimental Study on Lightning Attachment Manner to Wind Turbine Blades With Lightning Protection System

2019 ◽  
Vol 47 (1) ◽  
pp. 635-646 ◽  
Author(s):  
Zixin Guo ◽  
Qingmin Li ◽  
Yufei Ma ◽  
Hanwen Ren ◽  
Zhiyang Fang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Protection System ◽  
Lightning Protection ◽  
Wind Turbine Blades

Experiments of Wind Turbine Blades with Rocket Triggered Lightning

2009 ◽  
Vol 129 (5) ◽  
pp. 689-695
Author(s):  
Masayuki Minowa ◽  
Shinichi Sumi ◽  
Masayasu Minami ◽  
Kenji Horii
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Triggered Lightning
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