雷电电磁脉冲对风机机舱电磁环境的影响与防护研究  

Electromagnetic Environment Impact and Protection of Lightning Electromagnetic Pulse on Wind Turbine Nacelle

作　　者：周歧斌 史一泽 王振兴 边晓燕 ZHOU Qibin;SHI Yize;WANG Zhenxing;BIAN Xiaoyan(School of Electric Power Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Shanghai Key Laboratory of Power Station Automation Technology,School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海电力大学电气工程学院,上海200090 [2]上海大学机电工程与自动化学院,上海市电站自动化技术重点实验室,上海200444

出　　处：《电瓷避雷器》2021年第3期51-56,155,共7页Insulators and Surge Arresters

基　　金：上海市科学技术委员会“科技创新行动计划”青年科技英才扬帆计划项目(编号:19YF1416900);上海市科委科技创新项目(编号:16020501000);上海市气象局面上项目(编号:MS201602)。

摘　　要：当风力发电机的机舱受到雷击时,机舱内会产生雷电电磁脉冲(LEMP),继而影响电子设备运行,甚至严重破坏电子设备。为了研究机舱内的LEMP,首先建立了非金属机舱的全尺寸模型。采用传输线矩阵法对机舱内雷电电磁环境进行了模拟分析。然后研究了在机舱上应用金属屏蔽网的防护措施,包括屏蔽网的网格尺寸和材质对防护效果的影响。结果表明,金属屏蔽网可以有效地降低机舱内的LEMP。屏蔽效果很大程度上取决于屏蔽网材料的导电性和网格尺寸。When the nacelle of a wind turbine is struck by lightning,lightning electromagnetic pulse( LEMP) would be generated inside the nacelle and consequently impacts inside electronic devices or even seriously destroys them. To study the LEMP inside the nacelle,theauthor firstly built a full-scale model of a non-metallic nacelle. The lightning electromagnetic environment in the nacelle was simulated and analyzed by the transmission-line matrix method. Then the protective measures of applying metallic shielding mesh on the nacelle was studied,including the mesh size and material of the shielding mesh on the protective effect. The results show that LEMP in the nacelle can be effectively attenuated by metallic shielding meshes. The shielding effect is highly dependent on the conductivity of the shielding mesh material and the mesh size.

关 键 词：风力发电机机舱 雷电电磁脉冲 磁场强度 屏蔽网 

分 类 号：TM315[电气工程—电机] TM862