In this article we will know abut the Site selection criteria of wind generator. We will also discuss about the what is esential need for wind generator.
Site Selection Criteria of Wind Generator
These are some site selection criteria of wind generator which is describe below.
High Annual Average Wind Speed
The wind velocity is the critical parameter. The power in the wind Pw, through a given cross-sectional area for a uniform wind velocity v, is
Pw = Kv3
Where K is a constant. It is evident, because of the cubic dependence on wind velocity.
Availability of Anemometry Data
It is another important siting factor. The principal object is to measure the wind speed, which determines the WECS output power, but there are many methods. The anemometer height above ground, accuracy, linearity, location on the support tower, shadowing and inaccurate readings therefore, icing inertia of rotor whether it measures the horizontal velocity components or vertical, and temperature effects are a few of the many difficulties encountered. The anemometry data should be available over some time at the precise spot where any proposed WECS is to be built and that this should be accomplished before a siting decision is made. This is main site selection criteria of wind generator.
Availability of Wind
This important curve determines the maximum energy in the wind and hence is the principal initially controlling factor in predicting the electrical output and hence revenue returns of the WECS machine. It is also most affecting factor which is required in site selection criteria of wind generator.
Altitude of the Proposed Site
If affects the air density and thus the power in the wind and hence the useful WECS electric power output. In addition, as is well known, the winds tend to have higher velocities at higher altitudes. It is also site selection criterial of wind generator.
If the surface is bare rock it may mean lower, hub heights hence lower structure cost. If trees of grass of vegetation are present, all of which tend to restructure the wind, then higher hub heights will be needed resulting in larger system costs than the bare ground case. These are also main site selection criteria of wind generator.
Distance to Roads or Railways
This is another factor the system engineer considers for heavy machinery, structures materials, blades and other apparatus will have to be moved into any chosen WECS site. Distance to Road or Rail is basic site selection criteria of wind generator.
Nearness of Site to Local Centre/Users
This obvious criterion minimizes transmission line length and hence losses and costs. After applying all the previous siting criteria, hopefully as one narrows the proposed WECS sites to one or two they would be relatively near to the users of the generated electric energy.
Nature of Ground
Ground condition should be such that the foundations for a WECS are secured. Ground surface should be stable. Erosion problem should not be there, as it could possibly later wash out the foundations of a WECS, destroying the whole system. Nature of ground is also main site selection criteria of wind generator.
Favourable land cost
Land cost should be favourable as this along with other siting costs, enters into the whole system.
Hence these are some site selection criteria of wind generator. We have studied in detial about main factor which is decide existence of wind generator. If you will find any incorrect in above article you must comment in comment box.