Modeling Lightning Current Distribution in Tower Base of Wind Turbine

中国防雷 Pub Date : 2021-09-20 DOI:10.1109/ICLPandSIPDA54065.2021.9627352

E. Shulzhenko, Kazuo Yamamoto, M. Rock

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引用次数: 1

Abstract

Wind power generation has expanded rapidly worldwide over the past 15 years. Europe's wind farms generated 458 TWh of electricity in 2020 and total wind energy capacity exceeded 220 GW [1] (88% onshore and 12% offshore). This covered about 16% of the electricity demand in Europe (EU27+UK) and 27% in Germany. Therefore, a reliable and safe operation of wind turbines (WT) is becoming evermore crucial. Especially high requirements are set for their lightning protection system, since due to their height and open unshielded locations WTs are assessed as very exposed structures to lightning. Most of the breakdowns and malfunctions of the electrical and control system of WT are caused by a ground potential rise (GPR) due to lightning. To investigate this issue in more details, the field measurements were carried out at the specific WT in Japan and a corresponding numerical model was designed for analyzing of lightning current distribution within the WT and arose dangerous overvoltage for electrical equipment without and with overvoltage protection measures at the tower bottom based on installation of surge arresters (SA) due to different lightning components.

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风力机塔底雷电电流分布建模

在过去的15年里，风力发电在全球范围内迅速发展。2020年，欧洲风电场的发电量为458太瓦时，风能总容量超过220吉瓦[1](陆上88%，海上12%)。这满足了欧洲(欧盟27国+英国)约16%的电力需求和德国27%的电力需求。因此，风力涡轮机的可靠和安全运行变得越来越重要。对其防雷系统的要求特别高，因为由于其高度和开放的非屏蔽位置，wt被评估为非常暴露于雷击的结构。小波变压器电气和控制系统的故障和故障大多是由雷电引起的地电位上升引起的。为了更详细地研究这一问题，我们在日本的特定电力线进行了现场测量，并设计了相应的数值模型来分析电力线内的雷击电流分布，以及在塔底安装避雷器(SA)而没有和有过电压保护措施的电气设备由于不同的雷击成分而产生的危险过电压。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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中国防雷

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