Investigation on Lightning Protection and Grounding for Offshore Windfarm

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In an offshore wind farm, it is appropriate to make sea water potential into the potential standard of the wind farm whole region. However, there is the necessity of also taking into consideration the grounding electrode potential of each equipment in the insulated design of land equipment. Modeling techniques for ground cables can be used for the modeling of offshore wind farm connection cable. Within a connection cable, the travelling wave in various modes carries out both-way propagation, and affects excess voltages. The grounding resistance value on the land equipment side has the greatest influence for them.