公开(公告)号：EP2553788B1

公开(公告)日：2016-12-28

申请号：EP11713172.2

申请日：2011-03-23

申请人： Vestas Wind Systems A/S

发明人： LI, Bing ,  TRIPATHI, Anshuman ,  CAO, Shu, Yu ,  GUPTA, Amit, Kumar ,  SNG, Eng, Kian, Kenneth ,  HELLE, Lars

IPC分类号： H02J3/38 ,  F03D9/00

CPC分类号： F03D9/255 ,  H02J3/386 ,  Y02E10/72 ,  Y02E10/763

摘要： According to an embodiment, a method of operating a wind turbine comprising a DC-to-AC voltage converter is provided, the wind turbine being connectable to a grid via the DC-to-AC voltage converter, the method comprising: determining a line voltage of a power line connecting the DC-to-AC voltage converter to the grid; if the determined line voltage exceeds a predefined voltage threshold value, injecting reactive current into the power line, wherein the amount of reactive current injected is chosen such that an output voltage of the DC-to-AC voltage converter is kept within a predetermined voltage range.

公开(公告)号：EP2553788A2

公开(公告)日：2013-02-06

申请号：EP11713172.2

申请日：2011-03-23

申请人： Vestas Wind Systems A/S

发明人： LI, Bing ,  TRIPATHI, Anshuman ,  CAO, Shu, Yu ,  GUPTA, Amit, Kumar ,  SNG, Eng, Kian, Kenneth ,  HELLE, Lars

IPC分类号： H02J3/38 ,  F03D9/00

CPC分类号： F03D9/255 ,  H02J3/386 ,  Y02E10/72 ,  Y02E10/763

摘要： According to an embodiment, a method of operating a wind turbine comprising a DC-to-AC voltage converter is provided, the wind turbine being connectable to a grid via the DC-to-AC voltage converter, the method comprising: determining a line voltage of a power line connecting the DC-to-AC voltage converter to the grid; if the determined line voltage exceeds a predefined voltage threshold value, injecting reactive current into the power line, wherein the amount of reactive current injected is chosen such that an output voltage of the DC-to-AC voltage converter is kept within a predetermined voltage range.

摘要翻译： 根据实施例，提供了一种操作包括DC-AC电压转换器的风力涡轮机的方法，所述风力涡轮机可经由所述DC-AC电压转换器连接到电网，所述方法包括：确定线路电压 将DC-AC电压转换器连接到电网的电力线; 如果所确定的线电压超过预定的电压阈值，则将无功电流注入电力线，其中，选择注入的无功电流量，使得DC-AC电压转换器的输出电压保持在预定电压范围内 。