Includes conductive grounding rings and vertical grounding poles, which are characterized by the installation of two inner and outer horizontal grounding rings, multiple connections between the inner and outer horizontal grounding rings, and the inner and outer two horizontal grounding rings. Vertical grounding poles form a ring-shaped horizontal grounding network. Wuhan Yutong Technology's graphite lightning protection grounding products have the advantages of reduced floor space, easy construction, low grounding resistance, and can well meet the lightning protection grounding requirements of wind turbines.
"Wind Turbine Generator Specifications" - China Classification Society (2008)
Chapter 10 Lightning Protection System
Section 2 Protection Level and Lightning Protection Zone
10.2.1 Lightning protection design principles
10.2.1.1 Select an appropriate protection level to reduce the impact of direct lightning strikes on wind power generation through the protection measures taken under the maximum allowable conditions Risk of damage caused by the unit.
10.2.1.2 The entire wind turbine generator set is divided into several lightning protection zones according to the requirements for electromagnetic conditions, and appropriate measures should be taken for different lightning protection zones.
10.2.2 Protection level
10.2.2.1 According to the IEC 62305-1 standard, the estimated frequency of direct lightning strikes to the protected wind turbine and the allowable number of lightning strikes per year are Based on this, determine the protection level of the wind turbine and then determine the corresponding protection equipment.
10.2.2.2 Wind turbines should meet the following minimum protection levels:
(1) Wind turbines with a hub height not exceeding 60m: protection level III/IV;
(2) Wind turbines with hub height above 60m: protection level II.
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