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WIND POWER IL&FS Energy Development Company Limited (IEDCL) Global Technology Trends in Wind Power: R&D & Commercial Rajsekhar Budhavarapu Chief Technology.

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Presentation on theme: "WIND POWER IL&FS Energy Development Company Limited (IEDCL) Global Technology Trends in Wind Power: R&D & Commercial Rajsekhar Budhavarapu Chief Technology."— Presentation transcript:

1 WIND POWER IL&FS Energy Development Company Limited (IEDCL) Global Technology Trends in Wind Power: R&D & Commercial Rajsekhar Budhavarapu Chief Technology Officer ( Renewable Investments) IL&FS Energy Development Company Limited IEDCL Wind Development & Advisory Services

2 1.Challenge 2.Wind Energy Estimation 3.Wind farm Design Optimization 4.Up Scaling 5.Grid Compatibility 6.Technology view into future 7.Quality Assurance 8.Wind farm Power Control 9.Improving Performance : O&M 10.Policy Framework Design 11.Virtual Power Plants and Micro-grids Presentation Structure IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

3 Source: H. Beurskens, L. Hamilton Trend of EWEA forecasts The Challenge-Credibility IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

4 Comparison of Global and India Wind Energy Scenario Even with an advanced or optimistic realization in 2020, GWEC is projecting only an 18% share of electricity for wind energy in India, requiring 134 GW of wind power capacity. Source : GWEC report on India Wind Energy Outlook 2009 IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

5 Capacity or Production PENETRATION 1.Mere installed capacity does not provide wind power production share. 2.The goal should be the ability to supply X% of the electricity consumption. 3.Produced energy depends on the wind resource/siting, appropriate technology, grid capacity and a flexible & stable power system. 4.Wind energy investments depends on stable policies, attractive tariffs and “business case certainty”. 5.Hence, accurate wind resource estimates, reliable and efficient technology, sufficient grid capacity and power system integration are the keys. IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

6 Wind Energy Estimation: Indian Example Inputs Surface roughness Surface elevation Large-scale wind forcing Outputs Mean wind speed at 80 m a.g.l Mean power density at 80 m a.g.l. wind direction and direction distribution (generalize wind climate) Mesoscale modelling (KAMM model dx=5km) + On-site measurements Wind maps: Mean (annual and seasonal) wind speed and power density at 50m and 80m. Verification: Can compare generalized wind climates derived from observational wind atlas method and numerical wind atlas method. Application data: Generalized wind climate in WAsP.lib file format for all of India; 50 from observational wind atlas and 200,000+ from numerical wind atlas, allows application at very high resolutions (~10m) Energy Generation estimation Outcomes IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

7 3 to 5 D 5 to 8 D Does this lay out provide maximum output and minimum variability of power output???? No !!!! Wind farm optimization (1 of 4) IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

8 u0u0 u0u0 u0u0 u0u0 u u0u0 u0u0 u0u0 Wind farm optimization (2 of 4) IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

9 Increasing output by power control Normal operation, optimal C p First row(s) more ‘transparant’ for flow’ Wind farm optimization (3 of 4) Source: ECN IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

10 ECN/TNO Photo: Gustave Corten Wind farm optimization (4 of 4) Verification needs cross institutional cooperation with industry and customers Photo: Jos Beurskens Foto: Jos Beurskens ECN IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

11 m ø Jos Beurskens ? ? ? ? ? ? ? ? ? ? offshore 200 m UpWind ? Up scaling (1 of 4) IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

12 Weight ~ (D³) Cross sections ~ (D²) Stress (= weight/cross section) ~ D New materials with higher strength/mass levels Up scaling (2 of 4) Challenges IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

13 Full pitch control for very large wind turbines is not adequate anymore because of non uniform angles of attack along blade. Wind field Photo: Jos Beurskens Up scaling (3 of 4) IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

14 20-40% reduction in blade- in-tower fatigue load ”Smart” material variable trailing edge flap Rasmussen. DTU-Risø Up scaling ( 4 of 4) IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

15 Grid compatibility (1 of 2) FhG, Kassel (D) Ability to control wind farm as a power plant Control strategies for grid support Fault ride through capabilities Grid codes required IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

16 Constant rotational speedVariable rotational speed (present technology) Transmiss ion Wound rotor induction generator Grid compatibility (2 of 2) Controllable electrical parameters to support grid IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

17 Dedicated wind turbines for various climate zones (standards & certification) Further up scaling (20 MW?) Distributed aerodynamic rotor control with smart features (incorporating LIDAR) Integrated turbine control (output, stability, safety, failure resistant, grid compatibility and grid support) Wind farm control (variability of output, maximising output, load control, grid support) Technology view into the near future IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

18 Quality Assurance 1.For international acceptance wind turbines should be designed and certified to the IEC or GL standards series. 2.Recognized certifying bodies exist internationally for providing wind turbine certifications 3.Wind farm financing, insurance etc depend on the manufacturers ability to obtain appropriate certification. 4.Project certification may also be necessary to manage risks and secure financing, especially for offshore wind farms. Type certification acc. to IEC or GL 2010 guidelines IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

19 Wind Farm Power Control Typical wind farm power control methods Jauch, C. et. al. “International Comparison of Requirements for Connection of Wind Turbines to Power Systems”, Wind Energy 2005; 8:295–306 Wind farms must be able to provide : Voltage and reactive control, Frequency control Fault ride-through capability in order to maintain the electric system stability IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

20 Improving Performance: O&M Source: 3 rd WE20 by 2020 conference IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

21 Reqd Policy Framework: Competitive vs Feed-in-Tariff IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

22 Lastly: Virtual Power Plants & Micro Grids In areas that are cut-off from the urban regions, a smaller “Micro Grid” is of advantage to provide regional electricity. A Micro grid is a small electricity providing network with load sources, energy sources and storage. On a broader scale, a Virtual power plant (VPP) is a distributed system that can supply energy to a much larger grid. Each micro-grid or VPP would incorporate real-time information systems to ensure that energy production matches demand at all times. Since the grid is designed with respect to known sources of electricity and demand, the grid can be stable and its control more deterministic. IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services

23 END For further Information contact Rajsekhar Budhavarapu CTO- Renewable Investments IL&FS Energy Development Company Limited (IEDCL) 1st Floor, Corporate Office Tower, Ambience Mall Complex, Ambience Island, NH-8 Gurgaon , India T el: IL&FS Energy Development Company Limited (IEDCL)IEDCL Wind Development & Advisory Services


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