公开(公告)号：US11444459B2

公开(公告)日：2022-09-13

申请号：US16618689

申请日：2018-05-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Ravi Kumar ,  Janakiraman Sivasankaran ,  Mario Dante Jardiel ,  Anoop Vijay Tiwari ,  Kouroush Nayebi

IPC: H02J3/18 ,  H02J3/00 ,  G05B15/02 ,  H02J13/00

Abstract: There is provided a method of operating a renewable power plant that is connected to a wider power network by a bus. The method comprises: identifying a predetermined voltage condition of the renewable power plant or of the bus; controlling the renewable power plant to maintain zero reactive power exchange at the bus for a first period; calculating an average voltage level of the bus that was achieved during the first period; and controlling the renewable power plant to maintain the voltage output at a set voltage level for a second period, the set voltage level being substantially equal to the calculated average voltage level. The method ensures that voltage oscillations due to a push-pull phenomenon between a power plant controller and the power network do not upset the stability of the grid.

公开(公告)号：US11264802B2

公开(公告)日：2022-03-01

申请号：US16638670

申请日：2018-07-05

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Janakiraman Sivasankaran ,  Anoop Vijay Tiwari

IPC: H02J3/18 ,  H02J3/38 ,  F03D7/04

Abstract: A method for controlling a renewable energy power plant comprising a plurality of renewable energy generators, the method comprising: carrying out the following steps dynamically: determining a reactive power capability value of the power plant based on the generated active power of each of the renewable energy generators within the power plant; determining a reactive power exchange limit value based on a measured grid voltage level; and controlling the power plant so that the generated reactive power does not exceed the lower of the determined reactive power capability value and the determined reactive power exchange limit value that are determined dynamically.

公开(公告)号：US10968891B2

公开(公告)日：2021-04-06

申请号：US15524208

申请日：2015-10-14

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Kouroush Nayebi ,  Ravi Kumar

IPC: F03D7/04 ,  F03D7/02 ,  H02J3/16 ,  H02J3/48 ,  H02J3/38 ,  H02J3/00

Abstract: In various embodiments of the present disclosure, there is provided a method of controlling active power generation of a wind power plant coupled to a power grid, the wind power plant including a power plant controller for controlling a plurality of wind turbine generators. In an embodiment, the method includes monitoring an operational status of a plant compensation equipment and adjusting a plant reactive power capability when the operational status of the plant compensation equipment indicates a fault in the plant compensation equipment. According to an embodiment, the method includes controlling the wind power plant to curtail the active power generated by the wind power plant by a curtailment amount determined based on the adjusted plant reactive power capability. A corresponding wind power plant is further provided.

公开(公告)号：US10352301B2

公开(公告)日：2019-07-16

申请号：US15521573

申请日：2015-09-23

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Ravi Kumar

IPC: F03D7/04 ,  F03D7/02 ,  F03D9/25 ,  H02J3/16 ,  H02J3/38 ,  H02J3/00

Abstract: A method of operating a wind power plant in a weak grid environment is provided to achieve desired system stability criteria and to support an electrical grid during disturbances or faults. The wind power plant is coupled to an electrical grid, and includes a power plant controller for controlling a plurality of wind turbine generators. The method includes, when a weak grid criterion is fulfilled, setting the power plant controller to operate in a weak grid mode by providing, when a grid voltage deviates beyond a threshold voltage, a reduced active power reference to the plurality of wind turbine generators. The method further includes, when the electrical grid recovers, generating a reduced amount of active power based on the reduced active power reference.

公开(公告)号：US10116138B2

公开(公告)日：2018-10-30

申请号：US15103725

申请日：2014-11-25

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Abdul Saboor ,  Manoj Gupta

IPC: H02J3/16 ,  H02J3/38 ,  F03D7/04 ,  F03D7/02 ,  H02J3/50

Abstract: In various embodiments of the present disclosure, there is provided a method for controlling a reactive current injection in a wind power plant during a grid fault. According to an embodiment, the method includes measuring an amount of reactive current to be provided by the wind power plant to the grid during the grid fault. The method further includes determining a difference between a given required reactive current contribution from the wind power plant and the amount of reactive current to be provided by the wind power plant to the grid during the grid fault. According to an embodiment, the method includes controlling a plurality of wind turbine generators in the wind power plant to generate additional reactive current according to a reactive current reference generated based on the difference. A corresponding wind power plant is further provided.

公开(公告)号：US09556853B2

公开(公告)日：2017-01-31

申请号：US14765938

申请日：2013-02-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Dilip Kumar Guru ,  Amit Kumar Gupta

IPC: F03D9/00 ,  H02H3/00 ,  H02H7/093 ,  H02H3/02 ,  H02J3/38 ,  H02H3/08 ,  H01H71/10 ,  G05B23/02 ,  H01H81/00 ,  H02J3/16 ,  F03D7/02 ,  H02J3/18 ,  H02P9/00 ,  H02H7/30

CPC classification number: F03D7/048 ,  F03D7/0272 ,  F03D9/257 ,  G05B23/0235 ,  H01H71/10 ,  H01H81/00 ,  H02H3/006 ,  H02H3/025 ,  H02H3/08 ,  H02H7/093 ,  H02H7/30 ,  H02J3/16 ,  H02J3/18 ,  H02J3/38 ,  H02J3/381 ,  H02J3/382 ,  H02J3/386 ,  H02P9/006 ,  Y02E10/563 ,  Y02E10/763 ,  Y02E40/34

Abstract: A method of operating a wind turbine plant is provided. Such a wind turbine plant comprises at least one transmission branch comprising a plurality of wind turbine generators and coupled to an electrical grid at a point of common coupling through at least one circuit breaker comprising a breaking capacity. The method comprises monitoring the electrical grid for a low voltage fault event; and if a low voltage fault event is detected: calculating a grid short circuit strength, determining a short circuit current limit if the grid short circuit strength requires an initial fault current contribution which exceeds the breaking capacity of the circuit breaker to be passed through the circuit breaker, determining a maximum fault current contribution based on the short circuit current limit and operating the wind turbine generators to provide to the electrical grid the maximum fault current contribution.

Abstract translation: 提供了一种操作风力涡轮机设备的方法。 这种风力涡轮机设备包括至少一个包括多个风力涡轮发电机的传输分支，并且通过包括断路能力的至少一个断路器在公共耦合点处耦合到电网。 该方法包括监测低压故障事件的电网; 并且如果检测到低电压故障事件：计算电网短路强度，如果电网短路强度需要超过断路器通过电路的分断能力的初始故障电流贡献，则确定短路电流限制 断路器，基于短路电流限制确定最大故障电流贡献，并操作风力涡轮发电机以向电网提供最大故障电流贡献。

公开(公告)号：US12241454B2

公开(公告)日：2025-03-04

申请号：US18263879

申请日：2022-01-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Bo Yin ,  Torsten Lund ,  Gert Karmisholt Andersen ,  Kouroush Nayebi ,  Manoj Gupta

IPC: F03D7/00 ,  F03D7/02 ,  H02J3/18

Abstract: The invention relates to wind turbines, particularly to controlling reactive power exchange between a power grid and a wind power plant. The wind power plant has a plurality of wind turbine generators each having a corresponding power converter with a converter controller. Further, the wind power plant has a power plant transformer with an on load tap changer coupled between the wind power plant and the power grid. The power plant controller is regulating the on load tap changer and is generating reactive component setpoints for the wind turbine generators, when determining a need for production of short-term reactive power due to a sudden change in reactive power measured at the point of common coupling.

公开(公告)号：US11600985B2

公开(公告)日：2023-03-07

申请号：US16956880

申请日：2018-11-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Janakiraman Sivasankaran

IPC: H02H3/06 ,  H02J13/00 ,  H02J3/00 ,  G05B13/02 ,  H02J3/38 ,  H02P9/02 ,  H02J3/46 ,  H02J3/48 ,  H02J3/50

Abstract: A method for operating a wind turbine generator connected to a power network to account for recurring voltage faults on the power network caused by automatic reclosure of at least one circuit breaker following a short-circuit. The method comprises: identifying a deviation of voltage level of the power network from a normal operational voltage level of the network; determining that the identified deviation fulfils criteria for automatic reclosure; and operating the wind turbine generator in a recurring fault mode if automatic reclosure criteria are fulfilled. When operating the wind turbine generator in recurring fault mode, the method comprises: monitoring the recovery of the voltage level from the deviation; categorising the recovery of the voltage as one of at least a strong recovery or a weak recovery; and implementing a ride-through protocol according to the category of recovery.

公开(公告)号：US11171487B2

公开(公告)日：2021-11-09

申请号：US16646207

申请日：2018-09-03

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Janakiraman Sivasankaran ,  Leif Svinth Christensen

IPC: H02J3/38 ,  H02J3/00 ,  F03D7/02 ,  H02J3/16 ,  H02J3/46

Abstract: A control system for controlling the power output of a plurality of renewable energy generators, a power network connecting those generators to a Point of Interconnection (PoI) with which the power network is connected to an external power grid, and measurement means configured to measure electrical parameters associated with the Point of Interconnection, wherein the control system is configured to: operate each renewable energy generator to achieve a respective current level at a terminal of the generator that is equal to a current set point; implement, during a grid fault event, a feedback control routine in which the control system: determines a measured value of an electrical parameter at the Point of Interconnection, determines a target value of the electrical parameter; and modifies the current set point based on the measured value and the target value of the electrical parameter.

公开(公告)号：US10778010B2

公开(公告)日：2020-09-15

申请号：US16341490

申请日：2017-09-27

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Nolan Dadang Caliao ,  Manoj Gupta ,  Mario Dante Jardiel ,  Janakiraman Sivasankaran

IPC: H02J3/18 ,  F03D9/25 ,  F03D7/04 ,  H02J3/38

Abstract: A method for controlling a renewable energy power plant comprising a plurality of wind turbine generators, the method comprising: measuring a voltage level associated with a point of interconnection between a power transmission network and the power plant; calculating a reactive power exchange limit based upon the measured voltage level; and controlling the power plant so that the calculated reactive power exchange limit is not exceeded.