Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine Blades
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 performe...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2019-09-01
|
Series: | Electronics |
Subjects: | |
Online Access: | https://www.mdpi.com/2079-9292/8/9/1020 |
id |
doaj-e772fe7b45b647f5b0a2c1721a844c00 |
---|---|
record_format |
Article |
spelling |
doaj-e772fe7b45b647f5b0a2c1721a844c002020-11-25T01:22:45ZengMDPI AGElectronics2079-92922019-09-0189102010.3390/electronics8091020electronics8091020Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine BladesXin-kai Li0Jin-xue Guo1Xiao-ming Chen2Ke Yang3Tian-yu He4Xiao-dong Wang5China Huadian Engineering Co., LTD (CHEC), Beijing 100160, ChinaChina Huadian Engineering Co., LTD (CHEC), Beijing 100160, ChinaChina Huadian Engineering Co., LTD (CHEC), Beijing 100160, ChinaInstitute of Engineering Thermo physics, Chinese Academy of Sciences, Beijing 100190, ChinaChina Electric Power Research Institute, Beijing 100192, ChinaCollege of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaIn 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.https://www.mdpi.com/2079-9292/8/9/1020lightning protection systemwind turbine bladelightningaerodynamic performanceaerodynamic noise |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xin-kai Li Jin-xue Guo Xiao-ming Chen Ke Yang Tian-yu He Xiao-dong Wang |
spellingShingle |
Xin-kai Li Jin-xue Guo Xiao-ming Chen Ke Yang Tian-yu He Xiao-dong Wang 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 lightning protection system wind turbine blade lightning aerodynamic performance aerodynamic noise |
author_facet |
Xin-kai Li Jin-xue Guo Xiao-ming Chen Ke Yang Tian-yu He Xiao-dong Wang |
author_sort |
Xin-kai Li |
title |
Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine Blades |
title_short |
Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine Blades |
title_full |
Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine Blades |
title_fullStr |
Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine Blades |
title_full_unstemmed |
Experimental and Numerical Analysis of the Effect of a New Lightning Protection System on Lightning Protection and Aerodynamic Noise Performance of Wind Turbine Blades |
title_sort |
experimental and numerical analysis of the effect of a new lightning protection system on lightning protection and aerodynamic noise performance of wind turbine blades |
publisher |
MDPI AG |
series |
Electronics |
issn |
2079-9292 |
publishDate |
2019-09-01 |
description |
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. |
topic |
lightning protection system wind turbine blade lightning aerodynamic performance aerodynamic noise |
url |
https://www.mdpi.com/2079-9292/8/9/1020 |
work_keys_str_mv |
AT xinkaili experimentalandnumericalanalysisoftheeffectofanewlightningprotectionsystemonlightningprotectionandaerodynamicnoiseperformanceofwindturbineblades AT jinxueguo experimentalandnumericalanalysisoftheeffectofanewlightningprotectionsystemonlightningprotectionandaerodynamicnoiseperformanceofwindturbineblades AT xiaomingchen experimentalandnumericalanalysisoftheeffectofanewlightningprotectionsystemonlightningprotectionandaerodynamicnoiseperformanceofwindturbineblades AT keyang experimentalandnumericalanalysisoftheeffectofanewlightningprotectionsystemonlightningprotectionandaerodynamicnoiseperformanceofwindturbineblades AT tianyuhe experimentalandnumericalanalysisoftheeffectofanewlightningprotectionsystemonlightningprotectionandaerodynamicnoiseperformanceofwindturbineblades AT xiaodongwang experimentalandnumericalanalysisoftheeffectofanewlightningprotectionsystemonlightningprotectionandaerodynamicnoiseperformanceofwindturbineblades |
_version_ |
1725125578274635776 |