Fróðskaparrit - 01.01.1985, Side 19

VINDMÁTINGAR í TÓRSHAVN 1974-78
23
of the wind speed and the energy pr. m2 in
the wind for the period are 5.84 m/s and
2447 kWh/m2/year, respectively.
West, southwest and south are found to
be the most frequent directions of the wind.
The highest mean velocities and mean ener-
gies are found to be in these directions.
The annual frequency đistribution of the
wind speed varies with the direction of the
wind. A separate research (not discussed in
this paper) has shown, that in each direction
of the wind there are considerable interann-
ual variation in the annual frequency distri-
bution. When all directions are integrated,
the resulting frequency distribution also
shows an interannual variation.
It was investigated whether the Weibull
distribution function could be used for mo-
delling the frequency distribution of the wind.
A goodness-of fit test shows that for the pe-
riod, the hypothesis can be accepted on 0.1 %
level of significance in northeast, east, south-
east and southwest, and 2.5% level of signi-
ficance in the north. The hypothesis must
be rejectet by the goodness-of fit test when
all directions are integrated.
Ackowledgement
The author would like to thank the Tele-
graph Station in Tórshavn and Meteorolog-
isk Institut in Denmark for their supply of
data. Also, the author would like to ack-
nowledge his colleagues at Støðisútbúgving-
in, P. Zachariasen for valuable advises and
discussions, and S. Henriksen for making a
fair copy of this paper.
.v < h } v < 1 ø >
.1 . 4
.1 . 3
.1 • í /
/
/ 1 5 2 5 3 5 h rn
i---(----(.--------)---f-----f---L----
Mynd 1. Vindferðin í hæddini h
x mun til vindferóina
í 10 m hædđ.
v(h)/v(10)= 0.233 +
0.656-log10 (h + 4.75)•