Grid Intertie System takes the power that the wind plant produces and
converts it to useable energy and transfers it to
the utility grid (power company) through the customers circuit breaker
panel. When the customers usage exceeds the wind systems output, the
additional power required is drawn from the utility grid. If the
electrical needs are satisfied by the wind system, no power is used from
the utility. During periods of sustained high winds the system may
produce more power than is consumed, a financial return can be realized by
selling the excess power to the utility company and through net energy
savings. The Grid Intertie System is not a backup power system, if
the utility power goes out, the control shuts down until the utility power
comes back on.
Just as important as the winds, the location of the wind system is very
important too. A Site Analysis should be done to determine the best
possible location for the wind system to capture the most available wind.
A few key issues have to be considered:
- Usually the highest point has the best winds, although areas around
river valleys, large hills or mountains and large areas of trees can
affect the actual site. That is why it is best to do a wind study.
- Obstructions (Trees & Buildings)
- It is generally recommended to install a tower that is a minimum of 30
feet above all obstructions, and to locate the machine at a distance
that is twice the height of the obstructions.
- Prevailing Winds
- Try to locate the machine in an area where the prevailing winds can
get to the machine without any obstruction in front of it.
|WTIC offers towers ranging from 80' - 160'. As you
can see using the chart to the right, the higher you place the turbine the
stronger the wind speeds will be, and more energy will be produced by
In simple terms the output of the wind machine is based on the
velocity of the wind cubed.
Increasing the height of the tower from 30' to 120' will increase
the wind speed by 21.9%, however the actual output of the machine will increase
by as much as 81.1%.