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

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Wind power

WIND POWER

Global Technology Trends in Wind Power: R&D & Commercial

Rajsekhar Budhavarapu

Chief Technology Officer ( Renewable Investments)

IL&FS Energy Development Company Limited

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Presentation Structure

  • Challenge

  • Wind Energy Estimation

  • Wind farm Design Optimization

  • Up Scaling

  • Grid Compatibility

  • Technology view into future

  • Quality Assurance

  • Wind farm Power Control

  • Improving Performance : O&M

  • Policy Framework Design

  • Virtual Power Plants and Micro-grids

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

The Challenge-Credibility

Trend of EWEA forecasts

2009

2000

1997

1991

Source: H. Beurskens, L. Hamilton

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Comparison of global and india wind energy scenario

Comparison of Global and India Wind Energy Scenario

Source : GWEC report on India Wind Energy Outlook 2009

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.

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Capacity or production penetration

Capacity or Production PENETRATION

  • Mere installed capacity does not provide wind power production share.

  • The goal should be the ability to supply X% of the electricity consumption.

  • Produced energy depends on the wind resource/siting, appropriate technology, grid capacity and a flexible & stable power system.

  • Wind energy investments depends on stable policies, attractive tariffs and “business case certainty”.

  • 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


Wind energy estimation indian example

Wind Energy Estimation: Indian Example

Mesoscale modelling (KAMM model dx=5km) + On-site measurements

Outputs

Outcomes

Inputs

Mean wind speed at 80 m a.g.l

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

Surface roughness

Surface elevation

Mean power density at 80 m a.g.l.

Large-scale wind forcing

wind direction and direction distribution (generalize wind climate)

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

5 to 8 D

3 to 5 D

Wind farm optimization (1 of 4)

Does this lay out provide maximum output and minimum variability of power output????

No !!!!

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

u0

u

u0

u0

u0

u0

u0

u0

Wind farm optimization (2 of 4)

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Wind farm optimization (3 of 4)

Normal operation, optimal Cp

Increasing outputby power control

First row(s) more ‘transparant’ for flow’

Source: ECN

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

ECN

Foto: Jos Beurskens

Photo: Jos Beurskens

ECN/TNO

Photo: Gustave Corten

Wind farm optimization (4 of 4)

Verification needs cross institutional cooperation with industry and customers

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

2012

?

200 m

UpWind

150 m ø

?

?

Up scaling (1 of 4)

offshore

?

?

?

?

?

?

?

?

Jos Beurskens

Jos Beurskens

Jos Beurskens

Jos Beurskens

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Up scaling (2 of 4)

New materials with higher strength/mass levels

Challenges

Weight ~ (D³)Cross sections ~ (D²)Stress (= weight/cross section) ~ D

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Up scaling (3 of 4)

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

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Up scaling ( 4 of 4)

20-40% reduction in blade- in-tower fatigue load

”Smart” material variable trailing edge flap

Rasmussen. DTU-Risø

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Grid compatibility (1 of 2)

  • Ability to control wind farm as a power plant

  • Control strategies for grid support

  • Fault ride through capabilities

  • Grid codes required

FhG, Kassel (D)

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Grid compatibility (2 of 2)

Wound rotor induction generator

Transmission

Controllable electrical parameters to support grid

Constant rotational speed

Variable rotational speed(present technology)

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind power

Technology view into the near future

  • 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)

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Quality assurance

Quality Assurance

For international acceptance wind turbines should be designed and certified to the IEC 61400 or GL standards series.

Recognized certifying bodies exist internationally for providing wind turbine certifications

Wind farm financing, insurance etc depend on the manufacturers ability to obtain appropriate certification.

Project certification may also be necessary to manage risks and secure financing, especially for offshore wind farms.

Type certification acc. to IEC 61400-22 or GL 2010 guidelines

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Wind farm power control

Wind Farm Power Control

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

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

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Improving performance o m

Improving Performance: O&M

Source: 3rd WE20 by 2020 conference

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Reqd policy framework competitive vs feed in tariff

Reqd Policy Framework: Competitive vs Feed-in-Tariff

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


Lastly virtual power plants micro grids

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


Wind power

END

For further Information contact

RajsekharBudhavarapu

CTO- Renewable Investments

IL&FS Energy Development Company Limited (IEDCL)

1st Floor, Corporate Office Tower, Ambience Mall Complex, Ambience Island, NH-8

Gurgaon 122001, India

Email: [email protected]

T el: +91 12 4471 6100

IL&FS Energy Development Company Limited (IEDCL)

IEDCL Wind Development & Advisory Services


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