摘要
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.
作者
范昭胜
FAN Zhaosheng(Hunan Water Resources Development Investment Co.,LTD.,Changsha 410007,China)
出处
《湖南电力》
2020年第4期63-67,共5页
Hunan Electric Power
关键词
高山风电
雷击过电压
接地网改造
等电位
低压侧电涌保护器
alpine wind power
lightning overvoltage
reconstruction of grounding network
equipotential
low pressure side surge protector
