CONTROL OF ENERGY PRODUCTION ERRORS IN A WIND PARK

    公开(公告)号:WO2018228645A1

    公开(公告)日:2018-12-20

    申请号:PCT/DK2018/050107

    申请日:2018-05-16

    Abstract: The invention relates to a method for correcting deviations of power produced by a power plant which includes at least one wind turbine generator and possibly other types of power generating units. The power deviations, i.e. deviations from a power reference for the power plant, are determined as energy errors. The invention addresses solutions for determining and compensating the energy errors.

    A WIND POWER PLANT HAVING A PLURALITY OF WIND TURBINE GENERATORS AND A POWER PLANT CONTROLLER
    12.
    发明申请
    A WIND POWER PLANT HAVING A PLURALITY OF WIND TURBINE GENERATORS AND A POWER PLANT CONTROLLER 审中-公开
    一座风力发电厂,有多台风力发电机组和一台发电厂控制器

    公开(公告)号:WO2018006921A1

    公开(公告)日:2018-01-11

    申请号:PCT/DK2017/050228

    申请日:2017-07-05

    Abstract: The present invention relates to a method for operating a wind power plant which supplies power to a utility grid in accordance with an active power reference, the wind power plant comprises a plurality of wind turbine generators and a power plant controller arranged to send an active power set point to the wind turbine controller of each of the plurality of wind turbine generators, the method comprises the steps of: operating the wind power plant with an active power reference lower than a nominal active power of the wind power plant by curtailing at least some of the wind turbine generators of the plurality of wind turbine generators, determine a power capability of each of the curtailed wind turbine generators, defining a first group comprising wind turbine generators having a power capability higher than a power capability limit, defining a second group comprising wind turbine generators having a power capability lower than a power capability limit, equalize curtailment of the curtailed wind turbines generators by decreasing the active power set- point for the wind turbines generators in the first group and increasing the active power set-point for the wind turbines generators in the second group. The invention also relates to a wind power plant according to the method.

    Abstract translation: 本发明涉及一种用于操作风力发电站的方法,所述风力发电站根据有功功率基准向公用电网供电,所述风力发电站包括多个风力涡轮发电机和功率 设备控制器被布置为向所述多个风力涡轮发电机中的每个风力涡轮发电机的风力涡轮机控制器发送有效功率设定点,所述方法包括以下步骤:以有效功率参考值低于所述风力涡轮发电机的标称有功功率 风力发电厂通过减少所述多个风力涡轮发电机中的至少一些风力涡轮发电机,确定每个缩减的风力涡轮发电机的功率能力,限定包括具有比功率更高的功率能力的风力涡轮发电机的第一组 限定包括风力涡轮发电机的第二组,所述风力涡轮发电机具有低于功率能力限制的功率能力,从而平均限制功率 通过降低第一组中的风力涡轮机发电机的有功功率设定点并且增加第二组中的风力涡轮机发电机的有功功率设定点来减少风力涡轮机发电机的功率设定点。 本发明还涉及根据该方法的风力发电设备。

    ACTIVE POWER BOOSTING IN WIND POWER PLANTS
    13.
    发明申请

    公开(公告)号:WO2022069008A1

    公开(公告)日:2022-04-07

    申请号:PCT/DK2021/050290

    申请日:2021-09-21

    Abstract: Aspects of the present invention relate to a method (100) for controlling one or more wind turbine generators (14). The method (100) comprises: receiving (102) a trigger signal, and implementing (104) an active power boost mode during a predetermined time period in response to receiving the trigger signal. The active power boost mode comprises: disregarding (106) further trigger signals; and generating (108) one or more upper active power limits for each of the one or more wind turbine generators (14), wherein, during at least a first portion of the predetermined time period, the one or more upper active power limits are fixed (110) at an active power boost level that is greater than a nominal active power level of the one or more wind turbine generators (14).

    CONTROL OF A RENEWABLE POWER PLANT IN RESPONSE TO ZERO POWER DEMAND SIGNAL

    公开(公告)号:WO2021148096A1

    公开(公告)日:2021-07-29

    申请号:PCT/DK2021/050017

    申请日:2021-01-19

    Abstract: Aspects of the present invention relate to a method (100) of controlling a renewable power plant (12) comprising a plurality of renewable power generators (14) electrically connected by a local network (19) and configured to supply active power to a main network (16). The method (100) comprises: in response to receiving a signal requesting substantially zero active power supply to the main network (16): categorising (116, 118) a generator as power-supplying, and the remaining generators as power-consuming; operating (118) the power-consuming generators to generate no active power and to have their auxiliary systems draw power from the local network (19); and operating (116) the power-supplying generator to supply active power to the local network (19) such that the plant supplies substantially zero active power to the main network (16).

    ACTIVE POWER CONTROL IN RENEWABLE POWER PLANTS FOR GRID STABILISATION

    公开(公告)号:WO2021104596A1

    公开(公告)日:2021-06-03

    申请号:PCT/DK2020/050332

    申请日:2020-11-25

    Abstract: Aspects of the present invention relate to a method for controlling a renewable power plant connected to a power network to reduce deviation of a measured frequency of the power network from a target frequency. The method comprises determining a forecasted power gradient over a forecast interval defined between a first time point and a second time point, and, at a third time point during the forecast interval, controlling the power plant to output active power according to a minimum active power level if the measured frequency at the third time point is below the target frequency, controlling the power plant to output active power according to a maximum active power level if the measured frequency at the third time point is above the target frequency. The maximum and minimum active power levels are based on the forecasted power gradient.

    AUXILIARY POWER SYSTEM CONTROL IN HYBRID POWER PLANTS

    公开(公告)号:WO2021073700A1

    公开(公告)日:2021-04-22

    申请号:PCT/DK2020/050250

    申请日:2020-09-14

    Abstract: According to embodiments described herein, control of the auxiliary power system in a hybrid power plant (310) is provided by determining a grid-draw threshold from an external power grid (320); monitoring power consumption for powered systems (312, 313) of the hybrid power plant (310); monitoring power generation of the hybrid power plant (310); discharging an alternative power source of one or more of an Energy Storage System, ESS, (314) and an auxiliary generator (315) in response to the power consumption exceeding the grid-draw threshold; and implementing prediction algorithms for power generation of the hybrid power plant (310) and the power consumption. Accordingly, a source of power is managed between several alternative sources (314, 315) and the external power grid (320) to meet plant operator defined criteria when maintaining power in various wind speed conditions.

    OVERBOOSTING TECHNIQUES FOR WIND POWER PLANT
    18.
    发明申请
    OVERBOOSTING TECHNIQUES FOR WIND POWER PLANT 审中-公开
    风力发电厂的覆盖技术

    公开(公告)号:WO2016192731A1

    公开(公告)日:2016-12-08

    申请号:PCT/DK2016/050141

    申请日:2016-05-23

    Abstract: A method and control arrangement are disclosed for controlling power output of a wind power plant (WPP) including a plurality of wind turbine generators (WTGs). The method includes determining that overboosting is required for the WPP to meet a power demand at the WPP, and determining, for at least a first WTG of the plurality of WTGs, a corresponding amount of overboost capacity. The method further includes generating, based on the determined amount of overboost capacity, control signals causing the first WTG to increase its power output through overboosting to thereby fulfill at least a portion of the power demand.

    Abstract translation: 公开了一种用于控制包括多个风力涡轮发电机(WTG)的风力发电厂(WPP)的功率输出的方法和控制装置。 该方法包括确定WPP需要过载以满足WPP的功率需求,并且为多个WTG中的至少第一WTG确定相应量的过载能力。 该方法还包括基于所确定的过载能力的量来产生控制信号,使得第一WTG通过过载来增加其功率输出,从而满足功率需求的至少一部分。

    METHOD FOR DAMPING HARMONICS
    20.
    发明申请

    公开(公告)号:WO2019120398A1

    公开(公告)日:2019-06-27

    申请号:PCT/DK2018/050303

    申请日:2018-11-20

    Inventor: WEI, Mu WU, Dan

    Abstract: The invention relates to a method for damping harmonics of a power output of a power plant at a point of common coupling between the power plant and a utility grid, wherein the power plant comprises a plurality of energy production units. The method comprises determining an electrical characteristic at the point of common coupling; determining the electrical characteristic at an output terminal of each of the energy production units and dispatching a control signal to at least one of the energy production units to control the electrical characteristic at an output terminal of the respective energy production units. The control signal is based on the measurement of the electrical characteristic at the point of common coupling and arranged for damping the harmonic of the power output of the power plant at the point of common coupling, wherein the control signal is determined on the basis of a predetermined prioritizing sequence of said electrical characteristic.

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