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1、最新风电场运维人员技能考试试卷（Thelatestwindfarmmaintenancepersonnelskillstestpaper）In2012,windfarmoperationandmaintenancepersonnelSkillsexaminationpaper(theoreticalpart)1.Fillintheblanks(30blank,0.5pointseach,15points)1.Thefrequencyconverterisclassifiedaccordingtothemaincircu
2、itworkmode,whichcanbedividedintovoltagefrequencyconverterandcurrentfrequencyconverter.2.Thecabincanrotateintwodirections,andtherotationdirectionisdetectedbytheproximityswitch.Whenthecabinreachesitslimitinthesamedirection,thelimitswitchwillsendthesignaltothecontr
3、olunit,andthecontrolunitwillstopquicklyandreversethecable.3.Thepreventivemaintenanceofthewindpowerunitsinstrictaccordancewiththemaintenancescheduleprovidedbythemanufacturerisscheduledmaintenance.4.Thefrequencyofthepowersystemoperationiscontrolledbytheactivepower
4、ofthesystem.Thevoltageiscontrolledbythereactivepowerofthesystem.5.PT100sensorresistancevalueandtemperatureconversion:ontherelationshipbetweenresistancevaluefor100Ωtemperature0℃.6.Theworkingticketsshouldbeinduplicate,oneshouldbekeptintheworkplaceandtheothershallb
5、eheldbytheworkpermit.7.Ifthewindspeedexceedsafinitevalue,suchastheaverageof5or10minutes(meanwindspeed)and5secondsaverage(gustyspeed),theworkmustbestoppedimmediately.Nomaintenanceorrepairworkshallbeperformed.Thebladeislocatedanywherebetweenthepositionoftheworkand
6、thepositionofthepaddle.8.Thedatapointsmeasuredbywindelectricfieldtesttowerarelocatedattheheightofthefanhubandshouldcontainparameterssuchaswindspeed,winddirection,airtemperatureandairpressure.9.Increasingthetowerheightofgeneratorsetscanreducetheimpactofturbulence
7、intensity.10.TheinsulationgradeofthegeneratorofwindpowergeneratorsetsisgenerallyFgrade.11.Thezerosequencevoltageofthegroundfaultpointisthehighest,andthefurtherawayfromthefaultpoint,thelowerthevoltage.12.Thepowercurveofawindgeneratorisafunctionrelationshipofthene
8、tpoweroutputpowerofthewindgeneratorandthewindspeedofthehubheight.13.Thethreeconditionsofelectricshockaresinglephaseelectricshock,two-phaseelectricshock,andvoltageshoc
