摘要
双馈异步风力发电机是很多风力发电场使用的主要机型之一,双馈异步风力发电机大多采用的并网方式为单并网开关并网,并网并关故障率高、使用寿命短,甚至会出现因并网并关分、合闸不及时导致风力发电机重要部件损坏的情况。针对这种情况,提出加装并网接触器的方法改善单并网开关并网方式。应用结果表明:加装并网接触器后,并网接触器作为风机主要的并网元件,并网开关作为后备保护,实现两级控制,安全可靠性得到极大的提高。
Doubly-fed asynchronous wind turbine is one of the main wind turbine types,which is used in many wind farms.Most of doubly-fed asynchronous wind turbines are connected to the grid by a single grid-connected switch,which has high failure rate and short service life.Even the important components of the wind turbine will be damaged because of the grid-connected and disconnected,and the failure of switching on and off in time.In view of this situation,a method of adding grid connected contactor is proposed to improve the connected mode of single grid connected switches.The application results showed that after the grid-connected contactor is installed,the grid-connected contactor is the main grid-connected component of wind turbine and the grid-connected switch is the backup protection,which can realize two-step control so as to improve the safety obviously.
出处
《大众科技》
2018年第10期33-35,共3页
Popular Science & Technology
关键词
风力发电机
并网开关
并网接触器
优化设计
wind turbines
grid switch
grid connected contactor
optimal design
