風力発電システムの雷過電圧に関する実験的検討

DOI Web Site Web Site 被引用文献14件 参考文献13件

書誌事項

タイトル別名
  • An Experimental Study of Lightning Overvoltages in Wind Turbine Generation Systems
  • 風力発電システムの雷過電圧に関する実験的検討--実際の土壌における縮小モデル実験
  • フウリョク ハツデン システム ノ ライ カデンアツ ニ カンスル ジッケンテキ ケントウ ジッサイ ノ ドジョウ ニ オケル シュクショウ モデル ジッケン
  • — 実際の土壌における縮小モデル実験—
  • — Experiments Using a Reduced-Size Model on Actual Soil—

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In order to obtain good wind conditions, wind turbine generation systems are built at places like hill countries and shorefronts where few tall structures are found. However, this increases the risk of lightning strikes. To promote wind power generation, lightning-protection methodologies for such wind turbine generation systems have to be established. This paper presents the results of an experimental study which investigates the lightning overvoltages in wind turbine generation systems. The experiments were carried out on actual ground soil using a reduced-size wind turbine model with its foundations. From the experiments, the following conclusions have been deduced: (i) Voltage rise due to the grounding impedance of the foundations can cause a significant overvoltage between the tower foot and an incoming cable like a power, a communication or a control line. (ii) The voltage rise of the foundations and that of the surrounding ground soil may cause an overvoltage at the outermost insulation layer of an incoming cable, which can result in a breakdown or a deterioration of the insulation (iii) Voltage and current waveforms to understand the traveling-wave phenomenon on a wind power generation system with its foundations were obtained. The data will be useful for developing an EMTP simulation model of a wind turbine generation system for lightning overvoltage studies.

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