Selection of site for thermal power plant

Selection of site for thermal power plant

• Nearness to the load centre:

The power plant should be as near as possible to the load centre to the centre of load .So that the transmission cost and losses are minimum. This factor is most important when Dc supply system is adopted. However in the case of AC supply when transformation of energy from lower voltage to higher voltage and vice versa is possible power plants can be erected at places other than that of load provided other conditions are favorable.

• Water resources: 

For the construction and operating of power plant large volumes of water are required for the following reasons

(i) To raise the steam in boiler.

(ii) For cooling purpose such as in condensers

(iii) As a carrying medium such as disposal of ash.

(iv) For drinking purposes.

This could be supplied from either rivers or underground water resources. Therefore having enough water supplies in defined vicinity can be a factor in the selection of the site.

• Availability of Coal: 

Huge amount of coal is required for raising the steam. Since the government policy is to use the only low grade coal with 30 to 40 % ash content for power generation purposes, the steam power plants should be located near the coal mines to avoid the transport of coal & ash.

• Land Requirement: 

The land is required not only for setting up the plant but for other purposes also such as staff colony, coal storage, ash disposal etc

Eg: For 2000MW plant, the land requirement may be of the order of 200-250 acres. As the cost of the land adds up to the final cost of the plant, it should be available at a reasonable price. Land should be available for future extension.

• Transportation Facilities: 

The facilities must be available for transportation of heavy equipment and fuels e.g near railway station.

• Labour supplies:

 Skilled and unskilled laborers should be available at reasonable rates near the site of the plant.

• Ash Disposal: 

Ash is the main waste product of the steam power plant and with low grade coal, it may be 3.5 tones per day , some suitable means for disposal of ash should be though of. It may be purchased by building contractors, or it can be used for brick making near the plant site. If the site is near the coal mine it can be dumped into the disused mines. In case of site located near a river,sea or lake ash can be dumped into it. 

• Distance from populated area: 

The continuous burning of coal at the power station Produces smoke, fumes and ash which pollute the surrounding area. Such a pollution due to smoke is dangerous for the people living around the area. Hence, the site of a plant should be at a considerable distance from the populated area. 

Thermal Power Plant
Thermal power plant

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