Method and control arrangement for controlling a reactive power source
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-009/00
H02P-009/00
H02P-009/14
H02J-003/18
F03D-009/25
H02J-003/38
출원번호
US-0958522
(2015-12-03)
등록번호
US-10153719
(2018-12-11)
우선권정보
DK-2010 70069 (2010-02-25)
발명자
/ 주소
Garcia, Jorge Martinez
출원인 / 주소
VESTAS WIND SYSTEMS A/S
대리인 / 주소
Patterson + Sheridan, LLP
인용정보
피인용 횟수 :
0인용 특허 :
12
초록▼
The present invention relates to a method for controlling a reactive power source in a wind power plant, the method comprising the steps of providing a wind turbine reactive power control signal and providing an active power reference signal, said active power reference signal being a measure of an
The present invention relates to a method for controlling a reactive power source in a wind power plant, the method comprising the steps of providing a wind turbine reactive power control signal and providing an active power reference signal, said active power reference signal being a measure of an active power production of the wind power plant. A control signal for the reactive power source is generated by combining the wind turbine reactive power control signal and the active power reference signal in such a way that the control signal for the reactive power source becomes a weighted signal of the wind turbine reactive power control signal. Moreover, the present invention relates to control units and wind power plants suitable for carrying out the present invention.
대표청구항▼
1. A method for controlling power output of a wind power plant (WPP) comprising one or more wind turbines (WTs) and a non-WT reactive power source, the method comprising: calculating an active power control signal for a first WT of the one or more WTs, wherein the active power control signal indicat
1. A method for controlling power output of a wind power plant (WPP) comprising one or more wind turbines (WTs) and a non-WT reactive power source, the method comprising: calculating an active power control signal for a first WT of the one or more WTs, wherein the active power control signal indicates increasing an active power production of the first WT from a current active power production level;determining that increasing the active power production of the first WT from the current active production level requires decreasing a reactive power production of the first WT from a current reactive power production level;generating a reactive power control signal for the first WT corresponding to decreasing the reactive power production of the first WT; andactivating the non-WT reactive power source in conjunction with decreasing the reactive power production of the first WT responsive to determining that decreasing the reactive power production of the first WT is required, wherein activating the non-WT reactive power source comprises generating a control signal for the non-WT reactive power source using (i) the reactive power control signal and (ii) an active power reference signal representing an amount of active power production of the WPP. 2. The method of claim 1, wherein the non-WT reactive power source comprises a capacitive reactive power source. 3. The method of claim 2, wherein the non-WT reactive power source comprises a static compensator (STATCOM). 4. The method of claim 1, wherein the non-WT reactive power source comprises an inductive reactive power source. 5. The method of claim 1, wherein the reactive power control signal comprises a voltage reference for the first WT, wherein generating the reactive power control signal is performed responsive to determining that the first WT is unable to produce, at an increased active power production level specified by the active power control signal, sufficient reactive power to meet the voltage reference. 6. The method of claim 1, wherein the active power reference signal comprises a factor K that is determined using a measurement of the active power production of the WPP. 7. The method of claim 6, wherein the reactive power control signal for the first WT comprises a voltage reference Vref, wherein the control signal for the non-WT reactive power source is generated using a multiplicative product (K×Vref). 8. The method of claim 6, wherein a value of the control signal for the non-WT reactive power source is controlled within a range between zero and a value of the reactive power control signal for the first WT. 9. The method of claim 1, wherein the active power reference signal is a measure for a wind speed at a site of the WPP. 10. A control arrangement for a wind power plant (WPP) comprising one or more wind turbines (WTs) and a non-WT reactive power source, the WPP having an amount of active power production, the control arrangement comprising: a controller comprising a processor configured to: calculate an active power control signal for a first WT of the one or more WTs, wherein the active power control signal indicates increasing an active power production of the first WT from a current active power production level;determine that increasing the active power production of the first WT from the current active power production level requires decreasing a reactive power production of the first WT from a current reactive power production level;generate a reactive power control signal for the first WT corresponding to decreasing the reactive power production of the first WT; andactivating the non-WT reactive power source in conjunction with decreasing the reactive power production of the first WT responsive to determining that decreasing the reactive power production of the first WT is required, wherein activating the non-WT reactive power source comprises generating a control signal for the non-WT reactive power source using (i) the reactive power control signal and (ii) an active power reference signal representing the amount of active power production of the WPP. 11. The control arrangement of claim 10, wherein the reactive power source comprises a capacitive reactive power source. 12. The control arrangement of claim 11, wherein the reactive power source comprises a static compensator (STATCOM). 13. The control arrangement of claim 10, wherein the reactive power source comprises an inductive reactive power source. 14. The control arrangement of claim 10, wherein the reactive power control signal comprises a voltage reference for the first WT, wherein generating the reactive power control signal is performed responsive to determining that the first WT is unable to produce, at an increased active power production level specified by the active power control signal, sufficient reactive power to meet the voltage reference. 15. A wind power plant comprising the control arrangement of claim 10. 16. The control arrangement of claim 10, wherein the active power reference signal is a measure for a wind speed at a site of the WPP. 17. A computer program product comprising a computer-readable device having computer-readable program code embodied therewith, the computer-readable program code configured to perform an operation for controlling power output of a wind power plant (WPP) comprising one or more wind turbines (WTs) and a non-WT reactive power source, the operation comprising: calculating an active power control signal for a first WT of the one or more WTs, wherein the active power control signal indicates increasing an active power production of the first WT from a current active power production level;determining that increasing the active power production of the first WT from the current active production level requires decreasing a reactive power production of the first WT from a current reactive power production level;generating a reactive power control signal for the first WT corresponding to decreasing the reactive power production of the first WT; andactivating the non-WT reactive power source in conjunction with decreasing the reactive power production of the first WT responsive to determining that decreasing the reactive power production of the first WT is required, wherein activating the non-WT reactive power source comprises generating a control signal for the non-WT reactive power source using (i) the reactive power control signal and (ii) an active power reference signal representing an amount of active power production of the WPP. 18. The computer program product of claim 17, wherein the reactive power control signal comprises a voltage reference for the first WT, wherein generating the control signal for the reactive power source is performed responsive to determining that the first wind turbine is unable to produce, at an increased active power production level specified by the active power control signal, sufficient reactive power to meet the voltage reference. 19. The computer program product of claim 17, the operation further comprising: generating the active power reference signal by filtering a measurement of the amount of active production of the wind power plant. 20. The computer program product of claim 17, wherein the active power reference signal is a measure for a wind speed at a site of the WPP.
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이 특허에 인용된 특허 (12)
Hudson, Raymond M., Control system for doubly fed induction generator.
Jørgensen, Allan Holm; Helle, Lars; Schaier, Leonard, Variable speed wind turbine with a doubly-fed induction generator and rotor and grid inverters that use scalar controls.
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