Technology Development Trends for High Altitude Wind Power Genration

Abstract Atthealtitudesabove3km,thewindisthreetofourtimefasterandlessvariablethanatthecurrentMWsizedwindturbinehubheightofaround100m.Inaddition,powergenerationfromwindturbinesinstalledonthegroundisintermittentbecauselocalwindconditionsareaffectedbylocaltopographyandartificialstructures.Thewindenergyresearchersandengineersarenowlookingforrevolutionaryideastoutilizehighaltitudewindresourcesin-creasingthecapabilitiesofwindturbineinstallations.Thisarticlepresentsanddiscussesseveralconceptsforwindenergyexploitationfromwindathighaltitudes.Theconceptspresentedinthispapermakeuseofliftingbodies,calledwingsorkites,connectedtoatetherthatstetchesintothehigherregionsoftheatmosphere.Keywords:고공풍력발전(HighAltitudeWindPower),연결장치(Tether),풍력밀도(WindPowerDensity),안정화(Stabilization),연(Kite) 1.서 론 국내외적으로풍력발전시장은급속한신장추세를보이고있으며,이러한추세에힘입어5∼6MW급대형풍력발전기가상용화단계에진입하였으며,각국은풍력자원의적극적활용을위해많은예산을투자하여기술개발과단지건설에노력을기울이고있다.최근해외연구 1) 에의하면지표면80m높이에서평균풍속6.9m/s이상인지역의20%만풍력발전단지로개발하여도전세계에너지수요량을충족시킬수있다는결과를발표 [논문] 한국태양에너지학회 논문집JournaloftheKoreanSolarEnergySocietyVol. 30, No. 1, 2010ISSN 1598-6411투고일자:2009년12월14일,심사일자:2009년12월20일,게재확정일자:2010년2월1일교신저자:김석우(wemins@kier.re.kr)