PAPERS SELECTED FOR THE SYMPOSIUM

• ANALIZA PRIKLJUČENJA FARME VETROGENERATORA NA LOKACIJI „VELIKO BRDO“ NA ELEKTROENERGETSKU MREŽU

  Saša Stojković - Tehnički fakultet, Čačak, Srbija, Žarko Stevanović - Institut za nuklearne nauke VINČA, Laboratorija za termotehniku i energetiku

  Abstract Text

  Osnovna analiza koju treba izvesti pri planiranju farme vetrogeneratora je analiza energetske efikasnosti i uticaja na gubitke aktivne i reaktivne snage. U pogledu priključenja vetrogeneratora na postojeću elektroenergetsku mrežu, veoma je značajno analizirati uticaj farme generatora na naponski profil mreže,... show full text »
  Abstract Text

  Osnovna analiza koju treba izvesti pri planiranju farme vetrogeneratora je analiza energetske efikasnosti i uticaja na gubitke aktivne i reaktivne snage. U pogledu priključenja vetrogeneratora na postojeću elektroenergetsku mrežu, veoma je značajno analizirati uticaj farme generatora na naponski profil mreže, kao i povećanje udarnih struja kratkih spojeva, jer te struje utiču na naprezanja postojeće opreme. U ovom radu analizirani su upravo ti uticaji farme vetrogeneratora snage 16 MW na postojeću mrežu. Osnovni cilj ovog rada je da se procene uticaji koje priključenje farme od osam vetrogeneratora ima na energetsku efikasnost, naponski profil i udarne struje trofaznog kratkog spoja. Analizirani su, posebno, doprinosi u snazi koje imaju vetrogeneratori i postojeća mreža, gubici u vetrogeneratorima, vodovima i kablovima, kao i potrošnja. Definisan je simulacioni model, koji potpuno odgovara dispoziciji farme generatora koja je predmet projekta. Analiza je izvedena za radni režim koji odgovara nazivnom opterećenju. Model omogućava i dinamičke analize, pa je upotrebljen za analizu struja trofaznog kvara. Simulacije su izvedene softverskim alatom za elektromagnetne prelazne procese ATP-EMTP (Alternative Transients Program verzija ElectroMagnetic Transients Programa). « hide
  Symposium Session: Thermal, hydro, wind and other Power Plants | Eksploatacioni problemi termo, hidro, vetro i drugih elektrana

• WIND ATLAS OF SOUTHERN AND EASTERN SERBIA

  Predrag M. Živković, Mića V. Vukić, Mirjana S. Laković - Mašinski fakultet Niš, ul. A. Medvedeva 14, 18000 Niš, Žarko M. Stevanović, Žana Ž. Stevanović - Institut za nuklearne nauke VINČA, Laboratorija za termotehniku i energetiku

  Abstract Text

  In this paper Wind Atlas of Southern and Eastern Serbia is presented. It implies the determination of the best possible locations for siting of wind turbines, with the final goal of making the wind atlas of entire Serbia. In this... show full text »
  Abstract Text

  In this paper Wind Atlas of Southern and Eastern Serbia is presented. It implies the determination of the best possible locations for siting of wind turbines, with the final goal of making the wind atlas of entire Serbia. In this phase, twelve mezzo models, including the test model of Seličevica are considered, which covers the mentioned areas. The simulations are mostly performed using the WasP [4] simulation software, considering the experience in dealing with the software packages available. Results shown considers the type of wind turbine, Annual Energy Production (AEP), load factor, static and dynamic economical criteria. « hide
  Symposium Session: Energy resources and sustainable development | Energetski resursi i održivi razvoj

• WIND ENERGY ASSESMENT BY NORWEGIAN WIND ATLAS METHOD

  Predrag M. Živković, Gradimir S. Ilić, Mirjana S. Laković - Mašinski fakultet Niš, ul. A. Medvedeva 14, 18000 Niš, Žarko M. Stevanović, Žana Ž. Stevanović - Institut za nuklearne nauke VINČA, Laboratorija za termotehniku i energetiku

  Abstract Text

  Wind power assessment in complex terrain is very demanding task. Modeling wind conditions can be done by standard linear models, which unfortunatelly does not sufficiently reproduce wind conditions in complex terrain, ecpecially on leewaed sides of terrain slopes, (representative of... show full text »
  Abstract Text

  Wind power assessment in complex terrain is very demanding task. Modeling wind conditions can be done by standard linear models, which unfortunatelly does not sufficiently reproduce wind conditions in complex terrain, ecpecially on leewaed sides of terrain slopes, (representative of those models is the one used in WAsP – Wind Atlas Analysis and Application Program). Even anemometer measurements directly at a wind turbine’s site do not necessarily deliver the results needed for prediction calculations, as extrapolations of wind speed to hub height is tricky. In the full model, turbulence is modeled by modified two-equations k- model for neutral atmospheric boundary layer conditios, written in general curvelinear nonorthogonal coordinate system. The full sets of conservation equations are numericaly solved by Computational Fluid Dynamics (CFD) technique. « hide
  Symposium Session: Energy resources and sustainable development | Energetski resursi i održivi razvoj