高山风电场雷击分析与接地整改防护

Lightning Strike Analysis and Ground Rectification Protection in Alpine Wind Farm

通过阐述雷电损坏机理、建立雷电放电模型、评估风电场接地网状况,在综合研究风电场接地网条件、雷电对风机和箱式变电站过电压损坏过程、等电位连接系统的基础上,对风电场遭受雷击造成设备损坏的事故开展深入分析,获得整治方案,并重点介绍实施接地网改造和等电位连接等整改措施以及更换低压侧电涌保护器等抑制防护措施。

By expounding the mechanism of lightning damage,establishing the lightning discharge model and evaluating the grounding grid condition of wind farm,on the basis of a comprehensive study of the grounding grid conditions of wind farms,the process of over-voltage damage caused by lightning to wind turbines and box-type substations and the equipotential connection system,an in-depth analysis is carried out on the accidents of equipment damage caused by lightning strikes in wind farms.The improvement measures,such as the improvement of grounding grid and equipotential connection,and the replacement of low-voltage side surge protector are introduced.