贵州山地风力发电机防雷接地技术研究

Study of earthing technology of wind turbine generator in Guizhou mountain area

受山地气候特征影响,贵州省雷电活动具有复杂性和易损性。由于风电机组主要建设在地势较高的山脊,风力发电机极易遭受雷击。文章针对贵州省特殊的地形地貌和地质条件,对贵州山地风电场风电机组的防雷接地方法进行分析,同时对贵州省高土壤电阻率地区风电机组防雷接地存在的问题进行探讨。结合风电场接地系统的施工工艺,提出了降低贵州山地风力发电机组接地电阻的有效措施,为山地风力发电机组防雷接地设计提供参考。

Wind power construction in Guizhou province is in a rapidly growth stage. Influenced by mountain climate characteristics, the lightning activity in Guizhou province is complex and vulnerable. Because the wind turbine is mainly built on the high terrain ridge, so it is easily to be struck by lighting. In view of the special topography and geological conditions in Guizhou, the article analyzed the methods of earthing technology for wind turbines in Guizhou mountain area. At the same time, the article also discussed the wind turbine erathing problems in Guizhou high soil resistivity areas. Combined with the construction technology of the wind power system, the article puts forward the effective measures to reduce the grounding resistance of wind power generator,and provides reference for the grounding engineering design of wind power generator.