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    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE
    31.
    发明公开
    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE 有权
    VERFAHRENFÜRDEN BETRIEB EINER WINDTURBINE SOWIE GEEIGNETES系统DAFÜR

    公开(公告)号：EP2649306A2

    公开(公告)日：2013-10-16

    申请号：EP11799348.5

    申请日：2011-12-07

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  TRIPATHI, Anshuman ,  STYHM, Ove ,  HELLE, Lars ,  KARUPPANAN, Yugarajan ,  OPINA, Gil Jr Lampong

    IPC: F03D1/00 ,  H02M5/458 ,  H02M7/06 ,  H02M1/32

    CPC classification number: F03D7/0264 ,  F03D9/255 ,  H02J3/386 ,  Y02E10/72 ,  Y02E10/763

    Abstract: A method of operating a wind turbine is disclosed, the wind turbine comprising a power generator, a machine-side converter connected to the power generator, a line-side converter connected to a power grid through associated power components, and a DC-link connected between the machine-side converter and the line-side converter. The method includes monitoring the power grid for overvoltage events, and upon detecting an overvoltage event: (1) disabling active operation of the machine-side converter and the line-side converter, (2) enabling an AC load dump connected between the machine side converter and the power generator in order to dissipate power output from the power generator, (3) waiting for a waiting period, and (4) enabling active operation of the line-side converter and the machine converter when the overvoltage event ends within the waiting period.

    Abstract translation: 公开了一种操作风力涡轮机的方法，所述风力涡轮机包括发电机，连接到发电机的机器侧转换器，通过相关联的功率部件连接到电网的线路侧转换器，以及连接到 在机侧转换器和线路侧转换器之间。 该方法包括监控过电压事件的电网，检测到过电压事件时：（1）禁用机侧转换器和线路侧转换器的主动运行，（2）启用连接在机侧的交流负载转储 转换器和发电机，以消耗发电机的功率输出，（3）等待等待时间;（4）当过电压事件在等待期间结束时，使线路侧转换器和机器转换器有效运行 期。

    METHOD AND SYSTEM FOR OPERATING A WIND TURBINE
    33.
    发明公开
    METHOD AND SYSTEM FOR OPERATING A WIND TURBINE 审中-公开
    VERFAHREN UND SYSTEMFÜRDEN BETRIEB EINER WINDTURBINE

    公开(公告)号：EP2638282A2

    公开(公告)日：2013-09-18

    申请号：EP11791195.8

    申请日：2011-11-08

    Applicant: Vestas Wind Systems A/S

    Inventor： TEODORESCU, Remus ,  RODRIGUEZ, Pedro ,  ALLOZA, Alvaro Luna ,  GUPTA, Amit Kumar

    IPC: F03D9/00 ,  H02J3/26 ,  F03D7/04 ,  H02J3/38 ,  F03D7/02

    Abstract: A method for operating a power generation system coupled to a power grid during a grid unbalance event, a method for determining an injection current to be supplied into a power grid by a power generation system, and a method for addressing an asymmetric grid fault in a power grid connected to a power generation system are provided. The methods may be carried out based on a reactive or an active power/current priority.

    Abstract translation: 一种用于在电网不平衡事件期间操作耦合到电力网的发电系统的方法，用于确定由发电系统提供给电网的注入电流的方法，以及用于解决电力系统中不对称电网故障的方法 提供与发电系统连接的电网。 这些方法可以基于无功或有功功率/当前优先级进行。

    METHOD OF CONTROLLING A GRID SIDE CONVERTER OF A WIND TURBINE AND SYSTEM SUITABLE THEREFORE
    34.
    发明公开
    METHOD OF CONTROLLING A GRID SIDE CONVERTER OF A WIND TURBINE AND SYSTEM SUITABLE THEREFORE 有权
    用于控制WINDTURIBINE和合适的系统的功率转换器侧

    公开(公告)号：EP2606548A2

    公开(公告)日：2013-06-26

    申请号：EP11746158.2

    申请日：2011-08-16

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  ANSHUMAN, Tripathi ,  CAO, Shu Yu

    IPC: H02J3/46 ,  H02M1/00 ,  H02P9/00

    CPC classification number: H02M7/539 ,  H02J3/386 ,  H02M7/483 ,  H02M7/53875 ,  H02P9/00 ,  H02P2101/15 ,  Y02E10/763

    Abstract: According to an embodiment of the present invention, a method of controlling a grid side converter of a wind turbine is provided, wherein an output of the grid side converter is connected or connectable via a power line to an input of a grid transformer, the method comprising: determining a converter volt-sec occurring at the output of the grid side converter based on a converter voltage occurring at the output of the grid side converter; determining a volt-sec error between the determined converter volt-sec and a converter volt-sec reference, wherein the converter volt-sec reference is determined based on active power reference, reactive power reference, line current and a line voltage occurring at the input of the grid transformer (or at wind turbine terminals); and controlling, based on the determined volt-sec error, the grid side converter such that the volt-sec error is partly or fully compensated. The method is capable of supporting the demanded power quality even during abnormal voltage conditions, and is easy to realize. The method can seamlessly transit from linear to non-linear region of converter operation.

    A METHOD FOR CONTROLLING A WIND POWER PLANT AND A WIND POWER PLANT
    36.
    发明公开
    A METHOD FOR CONTROLLING A WIND POWER PLANT AND A WIND POWER PLANT 审中-公开
    温哥华瑞士日内瓦WINDENERGIEANLAGE UND WINDENERGIEANLAGE

    公开(公告)号：EP3061170A1

    公开(公告)日：2016-08-31

    申请号：EP14780751.5

    申请日：2014-09-26

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Manoj ,  GUPTA, Amit Kumar ,  GURU, Dilip Kumar

    IPC: H02H7/30 ,  F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  H02J3/00 ,  H02J3/16 ,  H02J3/24 ,  H02J3/38 ,  H02P9/00

    Abstract: A method for controlling a wind power plant, the wind power plant including a plant controller for controlling a plurality of wind turbine generators. The method for controlling a wind power plant allows the wind power plant to continue operating through a grid fault in a weak grid environment. In the method, a fault recovery process is carried out with a wind turbine power controller during a wind turbine fault recovery state to determine a grid voltage (VWTG), compare the grid voltage to a predetermined reference voltage (Vref) to obtain a difference value, and determine a current reference (QrefVC) based on the difference value for generating a reactive current (Idref) for regulating the grid voltage to the predetermined reference grid voltage. A corresponding wind power plant is further provided.

    Abstract translation: 一种用于控制风力发电厂的方法，所述风力发电厂包括用于控制多个风力涡轮发电机的设备控制器。 控制风力发电厂的方法允许风力发电厂在弱电网环境中通过电网故障继续运行。 在该方法中，在风力涡轮机故障恢复状态期间，利用风力涡轮机功率控制器进行故障恢复处理，以确定电网电压（VWTG），将电网电压与预定参考电压（Vref）进行比较以获得差值 ，并且基于用于产生用于将电网电压调节到预定参考电网电压的无功电流（Idref）的差值来确定电流参考（QrefVC）。 还提供了相应的风力发电厂。

    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE
    37.
    发明授权
    A METHOD OF OPERATING A WIND TURBINE AS WELL AS A SYSTEM SUITABLE THEREFORE 有权
    方法操作风力涡轮机及其系统

    公开(公告)号：EP2655871B1

    公开(公告)日：2016-03-09

    申请号：EP11804948.5

    申请日：2011-12-20

    Applicant: Vestas Wind Systems A/S

    Inventor： GUPTA, Amit Kumar ,  TRIPATHI, Anshuman

    IPC: F03D1/00 ,  H02M5/458 ,  H02M7/06 ,  H02M1/32

    CPC classification number: F03D9/255 ,  H02J3/386 ,  Y02E10/763

    Abstract: According to a method of the present invention, a method of operating a wind turbine comprising a power generator, a generator side converter connected to the power generator, a line side converter connected to a power grid through power components, and a DC-link connected between the generator side converter and the line side converter is provided, the method comprising: monitoring the grid voltages on the power grid for overvoltage events; if an overvoltage event is detected, operating the line side converter in an overmodulation range for at least a part of the duration of the overvoltage event.

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