PAPERS SELECTED FOR THE SYMPOSIUM

• ECO HOUSE FOR DEMONSTRATION OF RENEVABLE ENERGY SOURCES APPLICATION

  M. Zlatanović - Elektrotehnički fakuletet Univerziteta u Beogradu, J. Vujić - Delta 90, 11000 Beograd, Požeška 80/21

  Abstract Text

  The old forestry service house Rošijana, located in Special Nature Reserve (SNR) Deliblatska Peščara (DP) was selected for the case study of renewable energy sources (RES) application. The main objectives were to suggest the optimal design of RES installation, the... show full text »
  Abstract Text

  The old forestry service house Rošijana, located in Special Nature Reserve (SNR) Deliblatska Peščara (DP) was selected for the case study of renewable energy sources (RES) application. The main objectives were to suggest the optimal design of RES installation, the assessment of economic benefits, life cycle analysis of proposed installations and comparison with the other methods of electricity supply. It was also found that the region has plenty of RES and other energy sources: geothermal energy, sun radiation, biomass, hydropower, natural gas and coal. The wind was considered as the main renewable energy source and decision was made to supply the electricity originating from wind energy conversion to Rošijana eco-house. The assessment of wind potential at selected location was found of crucial importance for the case study realization. All the analyses related to optimization of wind conversion installation, economy consideration, environmental, social and other aspects of wind conversion to electricity are based on wind potential data. The contacts were made with the people living in Šušara village close to Rošijana site, with the local municipalities, public company responsible for SNR protection and development, with nature protection organizations, non-profit and non-government organization, with small farm houses, small and medium enterprises (SMEs) and large companies interested in RES application, institutions for planning and nature protection, government organizations and many individuals with the knowledge of local history, economy, life protection and upgrading all aspects of regional life. From the site visits it was learned that over one-century experience exists in using and controlling wind energy in the region close to Rošijana site. One century ago the wind turbine was used for water supply of Šušara village 3 km far from Rošijana and many actions to suppress the aeolian erosion of sandy region of Deliblatska Peščara were taken. In small town Uljma about 17 km far from Vršac there is a small enterprise for wind turbine blades and other turbine parts production. Orography, roughness and shelters data were collected together with data on Special Nature Reserve rules, as well as urban conditions and other policies related to design and activity of future eco-house Rošijana. In the case study preparation the wind databases contained in some software packages, data collected at surrounding met stations, as well as data collected at Zagajičko brdo specialized wind mast station were used. Database from Zagajičko brdo 50m tall wind measuring tower obtained during two years campaign was only found relevant for more precise case study. The optimization criteria of RES installation were considered from technical, economy, environmental and social aspects. Maximum annual electricity production was calculated for the selected wind turbine. It was concluded that Rošijana eco-house considering RES application meets all the requirements from energetic, environmental, social and educational point of view. « hide
  Symposium Session: Thermal, hydro, wind and other Power Plants | Eksploatacioni problemi termo, hidro, vetro i drugih elektrana

• ASSESSMENT OF WIND POTENTIAL IN VOJVODINA BY LINEAR INTERPOLATION OF METSTATIONS DATA

  M. Zlatanović ** - Elektrotehnički fakultet, 11120 Beograd, Bulevar Kralja Aleksandra 73** , N. Vasiljević* - PDRB Kolubara D.O.O. Lazarevac

  Abstract Text

  The method of wind potential map generation of Vojvodina, north part of Serbia, was described. Wind data from 8 meteorological stations collected during several years at 10m height were used for wind map calculations together with generated terrain roughness and... show full text »
  Abstract Text

  The method of wind potential map generation of Vojvodina, north part of Serbia, was described. Wind data from 8 meteorological stations collected during several years at 10m height were used for wind map calculations together with generated terrain roughness and orography databases. These databases were used as input in licensed WAsP software package to calculate three-dimensional wind velocity and wind power distribution. In the first step the regional wind climate for selected regions where the meteorological station is located was calculated. According to the fact that terrain of Vojvodina is homogenous, validity of each metstation data in the area of 20km*20km around the station was supposed. The meteorological station was located in the center of each area for which regional wind climate and corresponding wind atlas was derived. To calculate wind climate outside 20km*20km regions around metstations, linear wind data interpolation was used between minimum two, and maximum three nearest wind atlases which were derived by data from meteorological stations and terrain description. This method was applied to cover complete region of Vojvodina by wind atlas data. As the result, 66 single wind atlases were derived, from which 58 by linear interpolation of 8 atlases that were created by data from meteorological stations and terrain roughness and orography data. Finally, these 66 local 20km*20km area wind atlases were assembled to obtain wind potential map of Vojvodina. The wind atlas extrapolation to 30m height was compared with the measurements at the same height performed at one location. « hide
  Symposium Session: Energy resources and sustainable development | Energetski resursi i održivi razvoj

• PERFORMANCE OF SENSORS MOUNTED ON ISOLATED AND GRID CONNECTED WIND MAST

  I. Popović, M. Zlatanović - Faculty of Electrical Engineering University of Belgrade , Z. Gršić - Institute of Nuclear Sciences "Vinča"

  Abstract Text

  First and second-generation cup anemometers for wind speed measurements as well as non-mechanical anemometers like hot-wire anemometers were comparatively field-tested. The sensors for wind speed and direction measurement were mounted onto two 36m tall telecommunication towers, one 40m and one... show full text »
  Abstract Text

  First and second-generation cup anemometers for wind speed measurements as well as non-mechanical anemometers like hot-wire anemometers were comparatively field-tested. The sensors for wind speed and direction measurement were mounted onto two 36m tall telecommunication towers, one 40m and one 50m wind mast, located in the same-targeted area. The measurements data taken from different sets of sensors placed on wind masts located on different terrain configurations provides us with the complete set of information for use in our analysis. Our analyses have shown that sensor characteristics are strongly influencing wind speed and wind direction measurements and that non-mechanical anemometers are less sensitive to icing and more accurate and reliable. Therefore, in application dependant on accurate and reliable data measurement, usage of more sophisticated measuring methods is recommended. « hide
  Symposium Session: Thermal, hydro, wind and other Power Plants | Eksploatacioni problemi termo, hidro, vetro i drugih elektrana