Electric Power Generation (Wind Mills & Wind Map of India)

1. Electric Power Generation
(Wind Mills & Wind Map of India)
Mr. Utkal S Patil
Sharad Institute of Technology College of Engineering,
Yadrav

2. Contents
Sr No. Topic Slide number
01. Wind Energy Brief Overview. 03
02. Merits and Demerits of Wind Power. 04
03. Principle of Wind Power. 05
04. Wind Map of India. 06
05. Selection of Site for Wind Mills 07 & 08
2

3. Wind Energy:
• Winds are generated due to atmospheric temperature difference caused by
different areas getting different fluxes of solar energy(Solar Radiations).
• Air mass tends to move from hot region area towards colder regional areas-
this generates
winds in the directions.
• Wind energy depends upon its speed. Speed is high At higher heights.
• Thus wind energy is an direct form of solar energy.
• Wind energy can be converted in to electrical energy in wind power stations.
• Wind energy is continuously available in selected areas.
• Mandvi wind farm, Gujarat is the first wind farm in India.it is near western
coast at 4km from Mandvi.
3

4. Merits and Demerits of Wind Power
• Advantages:
• It is plentiful.
• It is inexhaustible.
• It is renewable.
• It is non polluting.
• Operating cost of wind mill is negligible.
• It does not impose extra heat burden on the environment.
Disadvantages:
• Wind power source is not steady.
• Wind power source is not reliable.
• Wind power source has wide variations in speed.
• Wind power does not remain same, it may divert.
• Long lasting power supply is not reliable.
• Wide size, High structural area and large finance requirement for installing wind
stations.
• As speed varies it becomes difficult to keep generated voltage and frequency
within allowable limits.
4

5. 5

6. 6
Wind Map of India

7. Selection of Site for Wind Mills:
The most suitable sites for wind turbines would be found in areas where the
annual average wind speeds are known to be moderately high or high.
The technical, economic, environmental, social and other factors are examined
before a decision is made to erect a generating plant on a specific site, Some of the
main considerations are discussed in the following points.
1. High Annual Average wind speed.
2. Available of anemometry data.
3. Availability of wind v(t) curve at proposed site.
4. Wind structure at the proposed site.
5. Altitude of the proposed site.
6. Terrain and its aerodynamic.
7. Local Ecology.
8. Distance to road or railways.
9. Nearness of site to local users.
10. Nature of ground.
11. Reasonable land cost
7

8. 12. Other problems such as icing problem, salty spray or blowing dust ,
should not be present at the site as they may effect aero turbine blades or
environment is generally adverse to machinery and electrical apparatus.
The best sites for wind energy are found offshore and the sea coast, An
average value on the sea coast is 2400KWH/m^2 per year.
The second best site for wind energy is on mountains. A typical value is
1600KWH/m^2
The lowest level of energy is found in plains. A typical average is
750KWh/m^2.
8

9. Thank you
9