Method of determining individual set points in a power plant controller, and a power plant controller
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-007/00
F03D-009/00
F03D-007/04
H02J-003/18
H02J-003/38
H02J-003/48
H02J-003/50
H02J-003/46
H02J-003/28
H02J-003/30
H02J-003/32
출원번호
US-0428465
(2013-09-03)
등록번호
US-9556852
(2017-01-31)
우선권정보
DK-PA 2012 70570 (2012-09-17)
국제출원번호
PCT/DK2013/050276
(2013-09-03)
국제공개번호
WO2014/071948
(2014-05-15)
발명자
/ 주소
Babazadeh, Mehrdad
Ehsani, Saed
Kjær, Martin Ansbjerg
Møller, Henrik B.
출원인 / 주소
VESTAS WIND SYSTEMS A/S
대리인 / 주소
Patterson + Sheridan, LLP
인용정보
피인용 횟수 :
2인용 특허 :
3
초록▼
This invention relates to a method and a power plant controller arranged to carry out the method. The method is on an intelligent dispatching of the power production to wind turbines and optional compensation equipment of a wind power plant, as the power producing units of a wind power plant. The in
This invention relates to a method and a power plant controller arranged to carry out the method. The method is on an intelligent dispatching of the power production to wind turbines and optional compensation equipment of a wind power plant, as the power producing units of a wind power plant. The invention relates to a case where the requested produced power (both active and reactive) is less than the total capacity of the power plant, and the invention relates to utilizing this situation to dispatch set points to the wind turbines and the compensation equipment based on correction factors relating to the operating conditions of the wind park. This method may increase the wind turbines' life time, help in scheduling maintenance and expand the electrical operating range of the wind power plant.
대표청구항▼
1. A method of controlling power production for a plurality of power-producing units of a wind power plant, the plurality of power-producing units comprising a plurality of wind turbine generators, the method comprising: receiving a requested power to be delivered by the wind power plant, the reques
1. A method of controlling power production for a plurality of power-producing units of a wind power plant, the plurality of power-producing units comprising a plurality of wind turbine generators, the method comprising: receiving a requested power to be delivered by the wind power plant, the requested power comprising a requested active power or a requested reactive power;determining a plurality of correction factors, each correction factor of the plurality of correction factors corresponding to a respective power-producing unit of the plurality of power-producing units and relating to condition information of the power-producing unit, wherein the plurality of correction factors comprise a plurality of prioritization factors indicating a relative power production capability of each power-producing unit of the plurality of power-producing units;receiving signals indicating a respective available power from each power-producing unit of the plurality of power-producing units, the available power comprising an available active power or an available reactive power of the power-producing unit; andupon determining that the requested power is less than a combined available power of the plurality of power-producing units: applying, for each power-producing unit of the plurality of power-producing units, the corresponding correction factor to the respective available power, andcalculating active power set points or reactive power set points for each power-producing unit of the plurality of power-producing units based on the applied correction factor, wherein relative amounts of the calculated active power set points or reactive power set points for the plurality of power-producing units are proportional to the prioritization factors. 2. The method of claim 1, wherein the condition information comprises one or more of the following: wind conditions information, operation characteristics information, component conditions information, wind power plant topology information, and age information of the plurality of wind turbine generators or of compensation equipment of the wind power plant. 3. The method of claim 2, wherein the wind conditions information comprises one or more of the following: wind direction information, wind speed information, turbulence level information, and wind shear information. 4. The method of claim 2, wherein the operation characteristics information comprises one or more of the following: optimal operation point information of the plurality of wind turbine generators or of the compensation equipment,electrical operational range information of the plurality of wind turbine generators or of the compensation equipment,operating history information of the plurality of wind turbine generators or of the compensation equipment, andproduction state information of the plurality of wind turbine generators or of the compensation equipment. 5. The method of claim 2, wherein the component conditions information comprises one or more of the following: sensor measurement information for components of the plurality of wind turbine generators,age information of the plurality of wind turbine generators or of the compensation equipment, andservice report information of the plurality of wind turbine generators or of the compensation equipment. 6. The method of claim 5, wherein the sensor measurement information comprises temperature measurements of the plurality of wind turbine generators. 7. The method of claim 2, wherein the wind power plant topology information comprises one or more of the following: potential shadowing information between wind turbine generators of the plurality of wind turbine generators based on wind direction information of the wind conditions information, andelectrical loss information of the plurality of wind turbine generators or of the compensation equipment to a point of common coupling of the wind power plant to an external electrical grid. 8. The method of claim 2, wherein the age information of the plurality of wind turbine generators comprises one or more of the following: actual age information of one or more components of the plurality of wind turbine generators, previous set points sent to the plurality of wind turbine generators, and a count of how many times the plurality of wind turbine generators is shut down or paused. 9. The method of claim 2, wherein the age information of the compensation equipment comprises one or more of the following: actual age information of the compensation equipment, previous set points sent to the compensation equipment, and a count of how many times the compensation equipment is disconnected or deactivated. 10. The method of claim 1, wherein determining the plurality of correction factors is further based on energy price information. 11. The method of claim 1, wherein calculating active power set points or reactive power set points for each power-producing unit comprises: calculating active power set points and reactive power set points for each of the plurality of wind turbine generators; andcalculating reactive power set points for the compensation equipment. 12. The method of claim 1, wherein calculating active power set points or reactive power set points for each power-producing unit is further based on one or more of the following: information for an internal electrical grid connecting the plurality of power-producing units to a point of common coupling of the wind power plant to an external electrical grid, andinformation for the plurality of wind turbine generators indicating whether each wind turbine generator is active or non-active. 13. The method of claim 1, wherein calculating active power set points or reactive power set points for each power-producing unit is performed using an optimal load flow technique or an optimization of a cost function. 14. The method of claim 1, wherein the plurality of power-producing units further comprises compensation equipment configured to produce active power or reactive power, wherein determining a plurality of correction factors comprises determining at least a first correction factor corresponding to the compensation equipment,wherein receiving signals indicating a respective available power from each power-producing unit comprises receiving at least a first signal corresponding to an available active power or an available reactive power of the compensation equipment, andwherein calculating active power set points or reactive power set points for each power-producing unit comprises calculating at least one active power set point or reactive set point for the compensation equipment based on the first correction factor and the available active power or the available reactive power indicated by the first signal. 15. The method of claim 14, wherein the condition information comprises age information of the plurality of wind turbine generators or of the compensation equipment. 16. The method of claim 14, wherein the compensation equipment comprises one or more of a switched capacitor bank, a switched inductor bank, a static condenser, a synchronous condenser, a static compensator (STATCOM), an electrical battery, a flywheel, an ultra-capacitor, a condenser, a hybrid wind-hydro plant, a photovoltaic cell, and a fuel cell. 17. A wind power plant controller for controlling power production of a plurality of power-producing units of a wind power plant, the plurality of power-producing units comprising a plurality of wind turbine generators, the wind power plant controller comprising: a receiver configured to: receive a requested power to be delivered by the wind power plant, the requested power comprising a requested active power or a requested reactive power, andreceive signals indicating a respective available power from each power-producing unit of the plurality of power-producing units, the available power comprising an available active power or an available reactive power of the power-producing unit;a correction unit configured to determine a plurality of correction factors, each correction factor of the plurality of correction factors corresponding to a respective power-producing unit of the plurality of power-producing units and relating to condition information of the power-producing unit, wherein the plurality of correction factors comprise a plurality of prioritization factors indicating a relative power production capability of each power-producing unit of the plurality of power-producing units; anda calculation unit configured to, upon determining that the requested power is less than a combined available power of the plurality of power-producing units: apply, for each power-producing unit of the plurality of power-producing units, the corresponding correction factor to the respective available power, andcalculate active power set points or reactive power set points for each power-producing unit of the plurality of power-producing units based on the applied correction factor, wherein relative amounts of the calculated active power set points or reactive power set points for the plurality of power-producing units are proportional to the prioritization factors. 18. A computer program product comprising a computer-readable device having computer-readable program code embodied therewith, the computer-readable program code executable by one or more computer processors to perform an operation for controlling power production of a plurality of power-producing units of a wind power plant, the plurality of power-producing units comprising a plurality of wind turbine generators, the operation comprising: receiving a requested power to be delivered by the wind power plant, the requested power comprising a requested active power or a requested reactive power;determining a plurality of correction factors, each correction factor of the plurality of correction factors corresponding to a respective power-producing unit of the plurality of power-producing units and relating to condition information of the power-producing unit, wherein the plurality of correction factors comprise a plurality of prioritization factors indicating a relative power production capability of each power-producing unit of the plurality of power-producing units;receiving signals indicating a respective available power from each power-producing unit of the plurality of power-producing units, the available power comprising an available active power or an available reactive power of the power-producing unit; andupon determining that the requested power is less than a combined available power of the plurality of power-producing units: applying, for each power-producing unit of the plurality of power-producing units, the corresponding correction factor to the respective available power, andcalculating active power set points or reactive power set points for each power-producing unit of the plurality of power-producing units based on the applied correction factor, wherein relative amounts of the calculated active power set points or reactive power set points for the plurality of power-producing units are proportional to the prioritization factors. 19. A method of controlling power production for a plurality of power-producing units of a wind power plant, the plurality of power-producing units comprising a plurality of wind turbine generators, the method comprising: receiving a requested power to be delivered by the wind power plant, the requested power comprising a requested active power or a requested reactive power;determining a plurality of correction factors, each correction factor of the plurality of correction factors corresponding to a respective power-producing unit of the plurality of power-producing units and relating to condition information of the power-producing unit;receiving signals indicating a respective available power from each power-producing unit of the plurality of power-producing units, the available power comprising an available active power or an available reactive power of the power-producing unit; andupon determining that the requested power is less than a combined available power of the plurality of power-producing units: applying, for each power-producing unit of the plurality of power-producing units, the corresponding correction factor to the respective available power, andcalculating active power set points or reactive power set points for each power-producing unit of the plurality of power-producing units based on the applied correction factor, wherein calculating active power set points or reactive power set points for each power-producing unit comprises multiplying the corresponding correction factor with the respective available power indicated by the received signals to produce modified signals,wherein calculating the active power set points or reactive set points for the power-producing unit is based on the modified signals.
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이 특허에 인용된 특허 (3)
Jurkat, Mark, Method for the determination of a control reserve and wind energy plant with a control unit for the determination of the control reserve.
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