Fluid Turbine Lightning Protection System
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United States of America Patent
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app pub date -
Sep 14, 2012
filing date -
Sep 14, 2011
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Abstract
A fluid turbine lightning protection system includes at least one air termination device, formed at least in part of an electrically conductive material, that can be positioned on a shroud of a fluid turbine and placed in electrical communication with a down conduction system. The down conduction system is in electrical communication with an earth-termination system configured to dissipate electricity transferred thereto to the ground. The at least one air termination device is configured to intercept a lightning strike and direct it through the down conduction system, the earth-termination system, and into the ground. The at least one air termination device may be positioned on a turbine shroud based on a “Rolling Sphere” derivation wherein the “Rolling Sphere” derivation is derived from the equation r=10·I0.65, where I is the peak current in kiloamperes and r is the rolling sphere radius in meters.
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