STUDY ON TRANSIENT EFFECTS OF LIGHTNING STRIKES AT OFFSHORE BOOSTER STATION

Zhang Ping; Zhang Haixu; Lu Shengxin; Wu Weiqiang; Wei Yuchong; Li Lianbing

doi:10.19912/j.0254-0096.tynxb.2023-1910

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (3) : 619-625. DOI: 10.19912/j.0254-0096.tynxb.2023-1910

STUDY ON TRANSIENT EFFECTS OF LIGHTNING STRIKES AT OFFSHORE BOOSTER STATION

Zhang Ping¹, Zhang Haixu², Lu Shengxin³, Wu Weiqiang³, Wei Yuchong³, Li Lianbing¹

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Abstract

In order to comprehensively study the integrated transient effects of lightning striking the offshore booster station when the offshore wind farm equipment is interconnected, the booster station platform is firstly equated to a discrete network π-type circuit, and the booster station transformer and submarine cable models are constructed based on the scattering parameter and transmission line theories, and then an integrated wave impedance model is constructed between the offshore wind turbine and the onshore transmission tower （which are interconnected with the booster station through the submarine cables）, and then the distribution law of overvoltage caused by lightning striking each part of offshore wind farm is explored. The experimental results show that when lightning strikes the offshore booster station, it generates MV-level response voltage, causing the peak voltage at the transformer to be 1/10 of the voltage at the lightning strike point, and its internal peak voltage is slightly higher than that of the enclosure; when lightning strikes the offshore wind turbine or the onshore transmission tower, the internal transformer of the booster station generates kV-level response voltage.

Key words

offshore wind turbines / lightning / submarine cables / offshore booster station / transient effect

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Zhang Ping, Zhang Haixu, Lu Shengxin, Wu Weiqiang, Wei Yuchong, Li Lianbing. STUDY ON TRANSIENT EFFECTS OF LIGHTNING STRIKES AT OFFSHORE BOOSTER STATION[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 619-625 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1910

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