风电机组电控系统防雷有效保护电压水平计算  

Calculation of Lightning Protection Voltage Level for Electric Control System of Wind Turbine

作　　者：邱国祥 杜明慧 陶海亮 何春 刘美峰 王子琼 QIU Guoxiang;DU Minghui;TAO Hailiang;HE Chun;LIU Meifeng;WANG Ziqiong(Dongfang Electric Wind Power Co.,Ltd.,Deyang Sichuan,618000)

机构地区：[1]东方电气风电股份有限公司,四川德阳618000

出　　处：《东方汽轮机》2023年第2期63-65,70,共4页Dongfang Turbine

摘　　要：随着风电场向山地、高原、近海等更容易遭受雷击的区域发展,使得风电机组的雷击风险越来越高,机组的防雷也越来越重要.风电机组电气与控制系统是风电机组重要构成部分,也是最容易遭受雷击破坏的部分.文章分析了防雷系统中有效保护电压水平的构成,特别计算了SPD两端连接导线的感应电压降,通过对SPD连接导线电感的计算,得出了有效保护电压水平与连接导线的关系,发现连接导线的长度对有效保护电压水平有着很大的影响,过长的连接导线,将使得SPD的保护作用大大降低,甚至失去对后端设备的保护作用.文末对系统的防雷提出了一些建议,以便SPD对系统起到更好的保护.With the development of wind farms to areas that are more vulnerable to lightning,such as mountains,plateaus and off-shore,the risk of wind turbines being struck by lightning has become higher,which makes the lightning protection of wind turbines more important.The electrical and control system of wind turbine is an important part of wind turbine,and it is also one of the most vulnerable parts to be destroyed by lightning.This paper analyzed the composition of effective protection voltage level in lightning protection system,especially calculated the induced voltage drop of the wire connecting SPD two ends.By calculating the induc-tance of wires connected by SPD,it is concluded that the relationship between the effective protection voltage level and the connect-ing conductor,and it is found that the length of the connection wire has a great influence on the effective protection voltage level.Excessive length of the connecting wire will greatly reduce the protection of SPD,and even lose the protection of the backend e-quipment.At the end of this paper,some suggestions on lightning protection of the system are put forward,so that SPD can better protect the system.

关 键 词：有效保护电压水平 感应电压降 导线电感 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]