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mounted: the one 40 m height mast close to the airport met
station Vršac and the second one 50 m tall on the location
in direction Straža – Kuštilj, which is a long escarpment
visible on Fig. 2 as the orographic configuration starting
from Zagajičko brdo towards the region south of mountain
Vršac.
Fig. 2. Position of met stations in Južni Banat
As it can be seen from the satellite vector map on Fig.
2, close to Vršac Mountain there is an elevated region
oriented southeast – northwest which is mentioned above –
Special Nature Reserve Deliblatska Peščara. The
predominant wind during the centuries put the fingerprint
in the sand allowing for predominant wind direction
changes to be identified by today measurements, since
during the last century the movement of the dunes was
stopped by the forest and tries cultivation.
In order to validate predicted wind resources in
Deliblatska Peščara based on the met data from Banatski
Karlovac station, the comparison was made with the
measured wind speed at 17 km distance located wind mast
in Dolovo. In 2003 year, the company Helimax from
Canada started the project for assessment of wind resources
in South Banat and the wind station Dolovo was a part of
the agreement between municipality of Pančevo and
Helimax Company.
III. MEASURING SITE S DESCRIPTION AND TERRAIN
MODELING
The met station Banatski Karlovac is located at the
position 45 0 03’ N 21 0 02’ E at the elevation of 86 m. a.s.l.
Since the station was established the data were collected in
an analogue form. The instruments were periodically
calibrated but the error for low wind velocity measurement
may exceed 3%. The anemometer is mounted onto the
rough of the house so that the influence of the met station
object has to be taken into consideration (Fig. 3). We
modeled the met station using the polar map in which the
influence of the met station itself was included as an
obstacle. The polar roughness diagram with 12 sectors was
prepared based on topographical map given in Fig. 4 which
also contains the objects (obstacles) and vegetation. The
station is located at the periphery of the village Banatski
Karlovac and is 800 m far from the next village Nikolinci.
Both the objects and vegetation are modeled by the sector
with different roughness length.
Fig. 3. Met Station Banatski Karlovac
Fig. 4.Map around Banatski Karlovac met station
Dolovo site is located at 145 m height a.s.l. in slightly
hilly region with the roughness which could be represented
by the length of 3 cm. The region is exposed to all wind
directions so that there is no influence of obstacles on the
wind direction rose. The southwest wind acceleration is
taken into account by orographic map.
At the position 44 0 56’ N 20 0 53’ E the NRG company
40 m tall mast was mounted equipped with 3 anemometers,
wind direction measuring system and thermometer. The
electronics for data handling was assembled at about 8 m
height, together with the acu station for supplying the
sensors and electronics as well as the signal light at the top
of tower. The wind velocity is measured at 20 m, 30 m and
40 m heights. The picture of the measuring tower is given
in Fig. 5.
Fig. 5 Wind mast at Dolovo
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