The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm

Abstract This paper establishes a complete lightning overvoltage simulation of an offshore wind farm, considering the electromagnetic effects including the blade, the tower and the power cable based on transmission‐line theory. And the influences of grounding schemes of the power cable inside the to...

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Main Authors: Jie Zhang, Yongxia Han, Licheng Li, Shuaisong Feng, Zhiming Liao
Format: Article
Language:English
Published: Wiley 2021-10-01
Series:IET Renewable Power Generation
Online Access:https://doi.org/10.1049/rpg2.12206
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spelling doaj-0b8a4d49b44b417cbc329f30d5334d9b2021-09-01T10:25:26ZengWileyIET Renewable Power Generation1752-14161752-14242021-10-0115132814282510.1049/rpg2.12206The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farmJie Zhang0Yongxia Han1Licheng Li2Shuaisong Feng3Zhiming Liao4School of Electric Power South China University of Technology Guangzhou ChinaSchool of Electric Power South China University of Technology Guangzhou ChinaSchool of Electric Power South China University of Technology Guangzhou ChinaSchool of Electric Power South China University of Technology Guangzhou ChinaSchool of Electric Power South China University of Technology Guangzhou ChinaAbstract This paper establishes a complete lightning overvoltage simulation of an offshore wind farm, considering the electromagnetic effects including the blade, the tower and the power cable based on transmission‐line theory. And the influences of grounding schemes of the power cable inside the tower, different WTs struck by lightning, lightning current amplitude and the number of blades struck by lightning on lightning overvoltages of WT are all analysed. The results demonstrate that the grounding of both ends can effectively suppress the lightning overvoltages of WT. Second, the lightning overvoltages of WTs are related to their connection modes in case of lightning strike to different WTs, because of the differences of the equivalent impedance at the outlet of the WTs. Furthermore, the lightning overvoltages of WTs caused by lightning strike to double blades are larger than that caused by lightning strike to a single blade. In the case of the lightning current with an amplitude of 200 kA striking double blades, arresters should adopt multiple parallels connection to ensure the equipment would not be damaged. The distance between the tower and the power cable should be maintained approximately 0.25 m, to prevent the damage to power cable caused by flashover.https://doi.org/10.1049/rpg2.12206
collection DOAJ
language English
format Article
sources DOAJ
author Jie Zhang
Yongxia Han
Licheng Li
Shuaisong Feng
Zhiming Liao
spellingShingle Jie Zhang
Yongxia Han
Licheng Li
Shuaisong Feng
Zhiming Liao
The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm
IET Renewable Power Generation
author_facet Jie Zhang
Yongxia Han
Licheng Li
Shuaisong Feng
Zhiming Liao
author_sort Jie Zhang
title The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm
title_short The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm
title_full The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm
title_fullStr The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm
title_full_unstemmed The impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm
title_sort impact of lightning strike to multi‐blade on the lightning overvoltage and stresses of arresters in offshore wind farm
publisher Wiley
series IET Renewable Power Generation
issn 1752-1416
1752-1424
publishDate 2021-10-01
description Abstract This paper establishes a complete lightning overvoltage simulation of an offshore wind farm, considering the electromagnetic effects including the blade, the tower and the power cable based on transmission‐line theory. And the influences of grounding schemes of the power cable inside the tower, different WTs struck by lightning, lightning current amplitude and the number of blades struck by lightning on lightning overvoltages of WT are all analysed. The results demonstrate that the grounding of both ends can effectively suppress the lightning overvoltages of WT. Second, the lightning overvoltages of WTs are related to their connection modes in case of lightning strike to different WTs, because of the differences of the equivalent impedance at the outlet of the WTs. Furthermore, the lightning overvoltages of WTs caused by lightning strike to double blades are larger than that caused by lightning strike to a single blade. In the case of the lightning current with an amplitude of 200 kA striking double blades, arresters should adopt multiple parallels connection to ensure the equipment would not be damaged. The distance between the tower and the power cable should be maintained approximately 0.25 m, to prevent the damage to power cable caused by flashover.
url https://doi.org/10.1049/rpg2.12206
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