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公开(公告)号：EP4329126A1
公开(公告)日：2024-02-28
申请号：EP22897016.6
申请日：2022-03-25
发明人： SU, Huili , ZHANG, Pengfei , MI, Yuxia , ZHAO, Shipei
摘要： The present disclosure provides a method and an apparatus for controlling power of a wind farm. The method includes: acquiring a historical equivalent fatigue load of a target component of each of a plurality of wind turbines; acquiring an entire fatigue load, an equivalent fatigue load of the target component and a pay per unit power generation of each of the plurality of wind turbines at a current moment; determining an optimal power value for at least one of the wind turbines according to the historical equivalent fatigue load, as well as the entire fatigue load, the equivalent fatigue load, and the pay per unit power generation; and adjusting a power value of the at least one of the wind turbines to the optimal power value for the wind turbine.
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公开(公告)号：EP4135145A1
公开(公告)日：2023-02-15
申请号：EP20941775.7
申请日：2020-09-07
发明人： YU, Lianfu , BAO, Xianwen , XING, Xiaogang , LIU, Yanlu , ZUO, Meiling
IPC分类号： H02J3/38
摘要： A method, an apparatus, and a system for monitoring an islanding electricity generation unit. The method comprises: determining an islanding electricity generation unit in a new energy station on the basis of collected electrical capacity at critical electrical nodes of the new energy station (S10); and controlling a switch device corresponding to the determined islanding electricity generation unit to sever connection between said electricity generation unit and a collector line (S20), the critical electrical nodes comprising nodes that have a collecting effect on grid-connected current of the electricity generation units of the new energy station, and each collector line being constructed to collect grid-connected current from at least one electricity generation unit and input same into a main transformer of the new energy station.
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公开(公告)号：EP4130466A1
公开(公告)日：2023-02-08
申请号：EP20937209.3
申请日：2020-09-10
发明人： LI, Shuanghu , ZHANG, Zhihong , GAO, Yang , XU, Zhiliang
IPC分类号： F03D80/00
摘要： Disclosed are a damping integrated device (100), a damper (1) and a wind turbine. The damping integrated device (100) comprises: a base body (10) having a predetermined length and comprising an inner cavity (10a) extending in the lengthwise direction (X) thereof; a frequency adjustment component (20) disposed in the inner cavity (10a), the frequency adjustment component (20) comprising an elastic member (21) and a connecting member (22), with one end of the elastic member (21) in the lengthwise direction (X) being connected to the base body (10), and the other end thereof being connected to the connecting member (22); a first connector (30) extending into the inner cavity (10a) and at least partially protruding out of the base body (10) in the lengthwise direction (X), the first connector (30) being connected to the connecting member (22) and capable of moving relative to the base body (10), so as to make the elastic member (21) stretch or shrink in the lengthwise direction (X); and a damping component (40) disposed in the inner cavity (10a), the damping component (40) being connected to the connecting member (22) and at least partially abutting against an inner wall of the base body (10), and the damping component (40) being configured to absorb kinetic energy of the first connector (30). The damping integrated device (100) can satisfy the requirements for frequency adjustment and damping, and also has a simple structural design and is easy to maintain.
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4.发明公开
公开(公告)号：EP4130462A1
公开(公告)日：2023-02-08
申请号：EP21833132.0
申请日：2021-03-30
发明人： ZHANG, Xinli
IPC分类号： F03D7/04
摘要： A wind turbine generator, and a minimum rotational speed control method therefor. The method comprises: identifying, according to statistical information obtained when rotational speeds of generators are in respective minimum rotational speed intervals, whether or not a wind turbine generator has repeatedly entered a minimum rotational speed interval; and if so, adjusting, according to the statistical information obtained when the rotational speeds are in the minimum rotational speed intervals, a pitch control system parameter and/or an electromagnetic torque control parameter of the wind turbine generator. The method can avoid abnormalities caused to a generator when same repeatedly enters a minimum rotational speed interval. The present invention further relates to a control device for implementing the above control method.
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公开(公告)号：EP4130461A1
公开(公告)日：2023-02-08
申请号：EP21826362.2
申请日：2021-06-02
发明人： LIU, Zhongpeng
摘要： A load reduction control method for a wind turbine generator, the load reduction control method comprising: determining a representative blade root load value of a wind turbine generator (10); determining an additional variable pitch rate value on the basis of the representative blade root load value; determining a variable pitch rate control value according to a variable pitch rate specified value and the additional variable pitch rate value; and simultaneously applying the variable pitch rate control value to blades (15) of the wind turbine generator so as to control the blades (15) of the wind turbine generator (10) to perform a variable pitch action. A device and system using the load reduction control method for a wind turbine generator are further provided. The load level of the whole machine can be greatly reduced in the case where there is little influence on the generating capacity.
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公开(公告)号：EP4117167A1
公开(公告)日：2023-01-11
申请号：EP21851056.8
申请日：2021-06-30
发明人： FU, Songge , YUAN, Xiaofeng
IPC分类号： H02M7/487
摘要： The present application discloses a power component of a three-level converter, a three-level converter and a wind turbine. The power component of the three-level converter includes: a first NPC bridge arm unit including a plurality of first NPC bridge arms connected in parallel; a second NPC bridge arm unit including a plurality of second NPC bridge arms connected in parallel; and a third NPC bridge arm unit including a plurality of third NPC bridge arms connected in parallel. The number of the second NPC bridge arms is the same as the number of the first NPC bridge arms, and the number of the third NPC bridge arms is determined based on the ratio of the loss of the first NPC bridge arm to the loss of the third NPC bridge arm. According to embodiments of the present application, the losses of the NPC bridge arm units of the three-level converter can be balanced, such that the losses of the IGBT devices of the three-level converter are evenly distributed.
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7.发明公开
公开(公告)号：EP3978749A1
公开(公告)日：2022-04-06
申请号：EP19931285.1
申请日：2019-12-24
发明人： BIAN, Fengjiao , LIU, Lei , JIANG, Mingyuan , YAO, Shigang
IPC分类号： F03D7/02
摘要： Provided are a feedforward control method and apparatus for a wind turbine generator set, and a control system. The feedforward control method comprises: acquiring, by means of a remote sensing measurement apparatus, inflowing wind information of a plurality of spatial point positions in front of a wind turbine generator set, wherein the plurality of spatial points are distributed in a plurality of different cross sections, and the distances between the plurality of different cross sections and the wind turbine generator set are different; combining the acquired inflowing wind information into a target wind velocity; predicting, on the basis of the combined target wind velocity, incoming flow arrival time required for inflowing wind at a target point to arrive at an impeller plane; and performing feedforward control on the wind turbine generator set according to the predicted incoming flow arrival time.
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公开(公告)号：EP3872338A1
公开(公告)日：2021-09-01
申请号：EP19879097.4
申请日：2019-06-21
发明人： LI, Xinle , YANG, Boyu
摘要： A video monitoring method and system for a blade of a wind turbine are provided. The method includes: calculating a pan value and a tilt value based on each of a plurality of circular arc angles when the blade of the wind turbine is in a stationary state, wherein the plurality of circular arc angles are set based on a circular arc curve on a rotational plane of the blade, which is formed with a first point as a center and a first distance as a radius; and setting the pan value and the tilt value of a video camera to the calculated pan value and tilt value, respectively, to capture the blade.
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公开(公告)号：EP3770611A1
公开(公告)日：2021-01-27
申请号：EP19889545.0
申请日：2019-11-29
发明人： WEI, Meng , YANG, Boyu , YE, Amin
IPC分类号： G01P21/00
摘要： Disclosed are a method, device and system for correcting installation errors of a wind vane (11). The method for correcting installation errors of a wind vane comprises: obtaining images of unit blades (7) and an electric generator outer rotor (S101); obtaining contours of the unit blades (7) and the contour of the electric generator outer rotor from the images of the unit blades (7) and the electric generator outer rotor (S102); calculating a unit center line (12) according to the contour of the electric generator outer rotor and the contours of two blades of the unit blades (7) (S103); obtaining a point of intersection of the unit center line and the contour of the electric generator outer rotor as a first point of intersection (S104); obtaining an orientating face of a wind vane (11) (S105); determining whether the wind vane (11) is aligned with the unit center line (12) according to the unit center line and the orientating face of the wind vane (11) (S106); and if the wind vane (11) is not aligned with the unit center line (12), calculating a deviation angle between the wind vane (11) and the unit center line (12) according to the orientating face of the wind vane (11) and the first point of intersection, and correcting the orientation of the wind vane (11) according to the deviation angle between the wind vane (11) and the unit center line (12) (S107).
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公开(公告)号：EP3744974A1
公开(公告)日：2020-12-02
申请号：EP19890997.0
申请日：2019-09-30
发明人： WANG, Baifang , YANG, Boyu , CHENG, Qingyang
IPC分类号： F03D17/00
摘要： A method and device for determining a tower clearance of a wind turbine. The method comprises: acquiring an image of a wind turbine in operation (S10), the image comprising the tips of blades (2) and a tower (1) of the wind turbine; determining the positions of the tips of the blades (2) of the wind turbine in the image acquired (S20); identifying the edges of the tower (1) in the image acquired (30); and calculating, on the basis of the positions of the tips of the blades (2) and the edges of the tower (1) that have been determined, the distance from the tips (2) of the blades (2) to the edges of the tower (1) to acquire a tower clearance (S40). The employment of the method and device for determining the tower clearance for the wind turbine allows the real-time determination of the tower clearance for the wind turbine, thus effectively preventing the blades (2) from hitting the tower.
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