Page 164 - Fluid Power Engineering
P. 164
138 Chapter Seven
Winds in sector 0°
25
20
15
10
5
0
0 5 10 15 20
(a)
Winds in sector 30°
25
20
15
10
5
0
0 5 10 15 20
(b)
FIGURE 7-10a and b Linear regression in two sectors to predict wind speed.
x-axis is the measured and y-axis is the reference. Plus represents pairs of
measured and reference.
The sector-wise frequency of the measured is very similar to
the long-term reference.
Table 7-9 shows the calculations of this method.
Matrix Method
As the name suggests, this method is applied to a matrix of wind
speed ranges and direction sectors from the reference time series. An
