CN104066978B - 具有实时风速测量的风场 - Google Patents
具有实时风速测量的风场 Download PDFInfo
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- CN104066978B CN104066978B CN201280068006.1A CN201280068006A CN104066978B CN 104066978 B CN104066978 B CN 104066978B CN 201280068006 A CN201280068006 A CN 201280068006A CN 104066978 B CN104066978 B CN 104066978B
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 39
- 238000012545 processing Methods 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 28
- 238000003860 storage Methods 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 9
- 238000010801 machine learning Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000010248 power generation Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000003653 coastal water Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000005612 types of electricity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N5/00—Computing arrangements using knowledge-based models
- G06N5/04—Inference or reasoning models
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/048—Automatic control; Regulation by means of an electrical or electronic controller controlling wind farms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/10—Devices for predicting weather conditions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N20/00—Machine learning
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/008—Arrangements for controlling electric generators for the purpose of obtaining a desired output wherein the generator is controlled by the requirements of the prime mover
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/82—Forecasts
- F05B2260/821—Parameter estimation or prediction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/20—Purpose of the control system to optimise the performance of a machine
- F05B2270/204—Purpose of the control system to optimise the performance of a machine taking into account the wake effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/321—Wind directions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Software Systems (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- General Physics & Mathematics (AREA)
- Computing Systems (AREA)
- Mathematical Physics (AREA)
- Evolutionary Computation (AREA)
- Data Mining & Analysis (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Medical Informatics (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Power Engineering (AREA)
- Computational Linguistics (AREA)
- Wind Motors (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2012/051117 WO2013110327A1 (en) | 2012-01-25 | 2012-01-25 | Wind park with real time wind speed measurements |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104066978A CN104066978A (zh) | 2014-09-24 |
CN104066978B true CN104066978B (zh) | 2019-03-12 |
Family
ID=45531872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201280068006.1A Active CN104066978B (zh) | 2012-01-25 | 2012-01-25 | 具有实时风速测量的风场 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20140336833A1 (zh) |
EP (1) | EP2807371B1 (zh) |
CN (1) | CN104066978B (zh) |
BR (1) | BR112014017866B1 (zh) |
DK (1) | DK2807371T3 (zh) |
WO (1) | WO2013110327A1 (zh) |
ZA (1) | ZA201404805B (zh) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101177435B1 (ko) | 2012-03-06 | 2012-08-27 | 전북대학교산학협력단 | 풍력발전단지의 풍황 예측 방법 |
US8994206B2 (en) | 2013-01-14 | 2015-03-31 | Abb Technology Ag | Turbine-based energy generation system with DC output |
CN104021424B (zh) * | 2013-02-28 | 2018-12-07 | 乌托巴斯洞察公司 | 用于预测风场中的风机的输出功率的方法和装置 |
KR20150018060A (ko) * | 2013-08-09 | 2015-02-23 | 전자부품연구원 | 풍력단지 내 터빈의 최적 발전 요구량 산출 방법 및 시스템 |
JP6072650B2 (ja) * | 2013-08-23 | 2017-02-01 | 株式会社日本製鋼所 | 流体力電力システム |
GB2525573A (en) * | 2013-11-26 | 2015-11-04 | Ocean Array Systems Ltd | Control of array of energy producing devices |
US9458828B2 (en) * | 2013-12-09 | 2016-10-04 | Siemens Aktiengesellschaft | Controlling wind power plant with negative power capability to respond to grid frequency instability |
KR101575102B1 (ko) * | 2013-12-27 | 2015-12-07 | 두산중공업 주식회사 | 풍력 발전 단지, 풍력 발전 단지의 제어방법 및 풍력 발전 유닛 |
US9389630B2 (en) * | 2014-02-21 | 2016-07-12 | International Business Machines Corporation | Predictive smart grid re-structuring based on expected load and power generation |
US9551322B2 (en) * | 2014-04-29 | 2017-01-24 | General Electric Company | Systems and methods for optimizing operation of a wind farm |
US10138873B2 (en) | 2014-05-30 | 2018-11-27 | General Electric Company | Systems and methods for wind turbine nacelle-position recalibration and wind direction estimation |
US9800054B2 (en) | 2014-07-31 | 2017-10-24 | Abb Schweiz Ag | DC connection system for renewable power generators |
CN104632542A (zh) * | 2014-11-14 | 2015-05-20 | 无锡信大气象传感网科技有限公司 | 一种风力发电方法 |
DE102014223853A1 (de) * | 2014-11-24 | 2016-05-25 | Siemens Aktiengesellschaft | Verwendung eines LIDAR-Systems zurKurzzeitvorhersage erwarteter Windverhältnisse und alsBasis für ein Kraftwerksmanagement sowieKraftwerksmanagementverfahren auf Basis eines voneinem LIDAR-System erhältlichen und erwarteteWindverhältnisse kodierenden Signals |
US10100813B2 (en) | 2014-11-24 | 2018-10-16 | General Electric Company | Systems and methods for optimizing operation of a wind farm |
EP3037657A1 (en) * | 2014-12-23 | 2016-06-29 | ABB Technology AG | Optimal wind farm operation |
US10443577B2 (en) * | 2015-07-17 | 2019-10-15 | General Electric Company | Systems and methods for improved wind power generation |
DE102016103254A1 (de) * | 2016-02-24 | 2017-08-24 | Wobben Properties Gmbh | Verfahren zum Bestimmen einer äquivalenten Windgeschwindigkeit |
US10385829B2 (en) | 2016-05-11 | 2019-08-20 | General Electric Company | System and method for validating optimization of a wind farm |
US20170337644A1 (en) * | 2016-05-23 | 2017-11-23 | General Electric Company | Data driven invocation of realtime wind market forecasting analytics |
US10247170B2 (en) | 2016-06-07 | 2019-04-02 | General Electric Company | System and method for controlling a dynamic system |
WO2018198225A1 (ja) * | 2017-04-26 | 2018-11-01 | 三菱電機株式会社 | Ai装置、レーザレーダ装置、及びウインドファーム制御システム |
DE102017009837A1 (de) | 2017-10-23 | 2019-04-25 | Senvion Gmbh | Steuerungssystem und Verfahren zum Betreiben einer Mehrzahl von Windenergieanlagen |
FR3076324A1 (fr) * | 2017-12-28 | 2019-07-05 | Orange | Procede, dispositif et systeme de reglage d'une eolienne |
CN110277802B (zh) * | 2019-07-24 | 2021-03-02 | 云南电力技术有限责任公司 | 一种用于风电场有功功率的实时预测方法及系统 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011000453A2 (de) * | 2009-06-29 | 2011-01-06 | Robert Bosch Gmbh | Windenergieanlage mit einer vielzahl von windenergievorrichtungen und verfahren zur steuerung der windenergieanlage |
CN101970866A (zh) * | 2008-03-07 | 2011-02-09 | 维斯塔斯风力系统有限公司 | 用于风力涡轮机冗余控制的控制系统和方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020084655A1 (en) * | 2000-12-29 | 2002-07-04 | Abb Research Ltd. | System, method and computer program product for enhancing commercial value of electrical power produced from a renewable energy power production facility |
DE10137272A1 (de) * | 2001-07-31 | 2003-02-27 | Aloys Wobben | Frühwarnsystem für Windenergieanlagen |
US6975925B1 (en) | 2002-03-19 | 2005-12-13 | Windlynx Systems, B.V. | Forecasting an energy output of a wind farm |
US7941304B2 (en) * | 2009-04-30 | 2011-05-10 | General Electric Company | Method for enhancement of a wind plant layout with multiple wind turbines |
WO2011022024A1 (en) * | 2009-08-21 | 2011-02-24 | Catch the Wind, Inc. | Wind and power forecasting using lidar distance wind sensor |
US20120299747A1 (en) * | 2009-11-13 | 2012-11-29 | Schaeffler Technologies AG & Co. KG | Remote condition monitoring system and method |
GB2481461A (en) * | 2010-06-21 | 2011-12-28 | Vestas Wind Sys As | Control of a downstream wind turbine in a wind park by sensing the wake turbulence of an upstream turbine |
KR101268619B1 (ko) * | 2010-10-29 | 2013-05-29 | 미츠비시 쥬고교 가부시키가이샤 | 풍력 발전 장치의 제어 장치, 윈드팜, 및 풍력 발전 장치의 제어 방법 |
US20110193344A1 (en) * | 2010-12-29 | 2011-08-11 | Vestas Wind Systems A/S | Control Network for Wind Turbine Park |
-
2012
- 2012-01-25 CN CN201280068006.1A patent/CN104066978B/zh active Active
- 2012-01-25 WO PCT/EP2012/051117 patent/WO2013110327A1/en active Application Filing
- 2012-01-25 BR BR112014017866-6A patent/BR112014017866B1/pt active IP Right Grant
- 2012-01-25 EP EP12701250.8A patent/EP2807371B1/en active Active
- 2012-01-25 DK DK12701250.8T patent/DK2807371T3/en active
-
2014
- 2014-06-27 ZA ZA2014/04805A patent/ZA201404805B/en unknown
- 2014-07-25 US US14/341,165 patent/US20140336833A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101970866A (zh) * | 2008-03-07 | 2011-02-09 | 维斯塔斯风力系统有限公司 | 用于风力涡轮机冗余控制的控制系统和方法 |
WO2011000453A2 (de) * | 2009-06-29 | 2011-01-06 | Robert Bosch Gmbh | Windenergieanlage mit einer vielzahl von windenergievorrichtungen und verfahren zur steuerung der windenergieanlage |
Also Published As
Publication number | Publication date |
---|---|
CN104066978A (zh) | 2014-09-24 |
EP2807371B1 (en) | 2016-04-06 |
DK2807371T3 (en) | 2016-07-25 |
WO2013110327A1 (en) | 2013-08-01 |
EP2807371A1 (en) | 2014-12-03 |
ZA201404805B (en) | 2015-12-23 |
BR112014017866A8 (pt) | 2021-03-09 |
BR112014017866B1 (pt) | 2021-11-09 |
US20140336833A1 (en) | 2014-11-13 |
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