05-07-2013, 03:59 PM
WIND MILLS
WIND MILLS.docx (Size: 46.76 KB / Downloads: 19)
Energy Scenario in India
India is a power-starved country. The total installed power generation capacity in India stood at 1,05,714.29 MW as on 31 March 2002 including thermal, hydel, nuclear and renewables. The contribution of thermal, hydel, nuclear and renewable sources of power towards the total installed power generation capacity were 73%, 23.50%, 2% and 1.50% respectively. According to a recent estimate there is a demand gap of 8-10% and a peak load demand gap of 18-20% in the country. The problem is also accentuated by the fact that there is very little decentralized generation of power and vast areas in the rural segment is not connected by grid power. This is where tapping wind energy for generation of grid quality electricity on a decentralized manner can be of immense help to the country.
Present state and future potential for wind energy generation in India
Exploitation of wind energy has been in place from time immemorial but the development of technology for tapping the same for generation of grid quality electricity is of a recent origin. India has been quick to make a foray in this area. It has made its mark as one of the top ranking countries in the world in wind power generation. With an installed generation capacity of 1702.30 MW as on 31.3.2002 of wind power, India now ranks 5th in the world after Germany, USA, Denmark and Spain in wind power generation. According to a recent estimate, the gross wind power generation potential in the country is estimated at 45,195 MW at 50 Mtr. Hub Height. Hub height is defined as the height from the Ground Level (GL) at which the hub of the windmill or the hub of the propeller blades of the wind energy generator is situated.
Wind resource potential
The wind power generation in the country is influenced to a great extent by the wind speed and wind power density prevalent at a particular potential location at any given point of time. The wind speed is affected to a large extent by the strong southwesterly monsoons, starting in May-June, and at the same time by the weaker northeastern monsoons in the winter months. It has been generally observed that 60-70% of the total wind power generation in the country takes place during June- October when the southwest monsoons are prevalent through out the country. According to a latest study, locations having an annual mean wind power density greater than 150 watts/ square meter at 30 meter hub height have been found to be suitable for development of wind power projects. The details of these sites are available in the wind energy atlas of India.
layout plan and site development requirement:
The land requirement for installation of the wind energy generators will depend upon the total installed capacity of the wind farm. The site should have been identified by MNES or its state level sister agencies for its potentiality for development of wind power based on technical parameters such as avg. yearly wind speed, wind power density, wind direction etc. The site should find a mention in the wind energy atlas of India having potentiality for wind power development. The average yearly wind speed of the site should be greater than the minimum cut-in wind speed for the specific WEG proposed to be installed. Micro siting at the site should also have been done by MNES or concerned state level agency. Non agricultural land should invariably be used for installation of the WEGs. A minimum distance of 7 times the rotor diameter should be maintained between 2 adjacent WEGs installed in a single row, whereas a minimum row to row distance of 3 times the rotor diameter should be maintained between 2 WEGs. Therefore, approximately an area of 4.00 acre is required for installation of 1.00 MW capacity wind power plant. The tentative cost of land and land development charges for the model project has been considered at Rs. 4.00 Lakh.
WIND MILLS.docx (Size: 46.76 KB / Downloads: 19)
Energy Scenario in India
India is a power-starved country. The total installed power generation capacity in India stood at 1,05,714.29 MW as on 31 March 2002 including thermal, hydel, nuclear and renewables. The contribution of thermal, hydel, nuclear and renewable sources of power towards the total installed power generation capacity were 73%, 23.50%, 2% and 1.50% respectively. According to a recent estimate there is a demand gap of 8-10% and a peak load demand gap of 18-20% in the country. The problem is also accentuated by the fact that there is very little decentralized generation of power and vast areas in the rural segment is not connected by grid power. This is where tapping wind energy for generation of grid quality electricity on a decentralized manner can be of immense help to the country.
Present state and future potential for wind energy generation in India
Exploitation of wind energy has been in place from time immemorial but the development of technology for tapping the same for generation of grid quality electricity is of a recent origin. India has been quick to make a foray in this area. It has made its mark as one of the top ranking countries in the world in wind power generation. With an installed generation capacity of 1702.30 MW as on 31.3.2002 of wind power, India now ranks 5th in the world after Germany, USA, Denmark and Spain in wind power generation. According to a recent estimate, the gross wind power generation potential in the country is estimated at 45,195 MW at 50 Mtr. Hub Height. Hub height is defined as the height from the Ground Level (GL) at which the hub of the windmill or the hub of the propeller blades of the wind energy generator is situated.
Wind resource potential
The wind power generation in the country is influenced to a great extent by the wind speed and wind power density prevalent at a particular potential location at any given point of time. The wind speed is affected to a large extent by the strong southwesterly monsoons, starting in May-June, and at the same time by the weaker northeastern monsoons in the winter months. It has been generally observed that 60-70% of the total wind power generation in the country takes place during June- October when the southwest monsoons are prevalent through out the country. According to a latest study, locations having an annual mean wind power density greater than 150 watts/ square meter at 30 meter hub height have been found to be suitable for development of wind power projects. The details of these sites are available in the wind energy atlas of India.
layout plan and site development requirement:
The land requirement for installation of the wind energy generators will depend upon the total installed capacity of the wind farm. The site should have been identified by MNES or its state level sister agencies for its potentiality for development of wind power based on technical parameters such as avg. yearly wind speed, wind power density, wind direction etc. The site should find a mention in the wind energy atlas of India having potentiality for wind power development. The average yearly wind speed of the site should be greater than the minimum cut-in wind speed for the specific WEG proposed to be installed. Micro siting at the site should also have been done by MNES or concerned state level agency. Non agricultural land should invariably be used for installation of the WEGs. A minimum distance of 7 times the rotor diameter should be maintained between 2 adjacent WEGs installed in a single row, whereas a minimum row to row distance of 3 times the rotor diameter should be maintained between 2 WEGs. Therefore, approximately an area of 4.00 acre is required for installation of 1.00 MW capacity wind power plant. The tentative cost of land and land development charges for the model project has been considered at Rs. 4.00 Lakh.