04 May 2010

Sea Wind Power

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To this date there is not a single offshore wind turbine been built in the United States. Meanwhile Europe, China and Japan are far along in developing a water based wind power industry

All one needs is a strong and steady wind as well as a relatively easy way to connect o the power grid so as to transmit the power gained from the wind. Most people think of wind power from various land based operations. However, it can be done by basing the wind turbine in the sea.

A wind farm is a group of wind turbines in the same location used for production of electric power. Individual turbines are interconnected with a medium voltage power collection system and communications network. At a substation, this medium voltage electrical current is increased in voltage with a transformer for connection to the high voltage transmission system.

Near shore turbine installations are on land within 5 miles of a shoreline or on water within ten miles. These areas are good sites for turbine installation, because of wind produced by convection due to differential heating of land and sea each day. Wind speeds in these zones share the characteristics of both onshore and offshore wind,depending on the prevailing wind direction.

Offshore wind turbines are less obtrusive than turbines on land, as their apparent size and noise is mitigated by distance. Because water has less surface roughness than land (especially deeper water), the average wind speed is usually considerably higher over open water.

Spain, Denmark, and Germany are Europe's main wind energy producers. A large wind farm may consist of a few dozen to several hundred individual wind turbines, and cover an extended area of hundreds of square miles, but the land between the turbines may be used for agricultural or other purposes. A wind farm may be located off-shore to take advantage of strong winds blowing over the surface of an ocean or lake.

(ENN - Environmental News Network)

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