2008研究生课程第一章-电能质量概论-PDF

NORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITY™™™™™3™™™NORTHCHINAELECTRICPOWERUNIVERSITYPQ™PurdueUniversity---PowerQuality;™TheUniversityofTexasATAustin---PowerQualityandHarmonics;™InstituteofRensselaer---ElectricalPowersystemsQuality;™TheUniversityofAlberta---AdvancedPowerQuality™清华、华中科大、湖大、上海交大、西交大等。NORTHCHINAELECTRICPOWERUNIVERSITYWhatisPowerQuality?NORTHCHINAELECTRICPOWERUNIVERSITY16623456NORTHCHINAELECTRICPOWERUNIVERSITY™™™2QNORTHCHINAELECTRICPOWERUNIVERSITYbulkpowersystem)(HVDC™NORTHCHINAELECTRICPOWERUNIVERSITY:44GW:92GW:37GW:82GW:106GW:91GWDC:7.2GWAC:0.5GWDC:0.36GWDC:3GWAC:1.2GWNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYDC:2.8GWDC:2.2GWDC:3GWNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITY2™ƒ6600GW500W“”1093.2kW6.8kW9.6kW3.2kW8.6kW13.2kW0200400600800100012001400(GW)NORTHCHINAELECTRICPOWERUNIVERSITYBULKPOWERSYSTEM3NORTHCHINAELECTRICPOWERUNIVERSITY™™QualityQuantity™adequacysecurityNORTHCHINAELECTRICPOWERUNIVERSITY™™™NORTHCHINAELECTRICPOWERUNIVERSITY™™12™NORTHCHINAELECTRICPOWERUNIVERSITY6”“NORTHCHINAELECTRICPOWERUNIVERSITY63™™™NORTHCHINAELECTRICPOWERUNIVERSITY3NORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYWhatisspecialaboutthesinewave?tsinUumAB0ω=31420=π=ωfOmUU2=tsinIimA0ω=1=ϕ=COS,Riu)32(0π−ω=tsinUumBC)34(0π−ω=tsinUumCANORTHCHINAELECTRICPOWERUNIVERSITYtUuωsin2=i)sin(2ϕω−==tIkuikNORTHCHINAELECTRICPOWERUNIVERSITY™™™™™™NORTHCHINAELECTRICPOWERUNIVERSITY™™™™™™™NORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITY™2008214NORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITY™™™™™1000AAMP3“”“”NORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITY1™™™™™™™0100200300400500-400-20002004000100200300400500-400-20002004000100200300400500-400-200020040002004006008001000-400-200020040002004006008001000-400-200020040002004006008001000-400-200020040002004006008001000-500050002004006008001000-400-2000200400NORTHCHINAELECTRICPOWERUNIVERSITY2SAGSDIPSINTERRUPTIONSSWELLSTRANSIENTSHARMONICSDISTORTIONSNOTCHESFLUCTUATIONSFREQUENCYDEVIATIONSNORTHCHINAELECTRICPOWERUNIVERSITY601766128310825(a)b1-2NORTHCHINAELECTRICPOWERUNIVERSITYWhatisPowerQuality?™whatdowemeanby‘powerquality’?Aperfectpowersupplywouldbeonethatis™alwaysavailable,™alwayswithinvoltageandfrequencytolerances,™andhasapurenoise-freesinusoidalwaveshape.NORTHCHINAELECTRICPOWERUNIVERSITY™™NORTHCHINAELECTRICPOWERUNIVERSITYWhatisPowerQuality?IEEE..theconceptofpoweringandgroundingsensitiveelectronicequipmentinamannersuitablefortheequipmentLPQI(LeonardoPowerQualityInitiative)..asupplythatisalwaysavailable,alwayswithinvoltageandfrequencytolerance,withapure,noisefree,sinusoidalwaveshapeSankaran(modified)..asetofboundariesthatallowelectricalappliancesandsystemstofunctionasintendedwithoutsignificantlossoflifetimeorperformanceNORTHCHINAELECTRICPOWERUNIVERSITY™™™NORTHCHINAELECTRICPOWERUNIVERSITY™™1™2™3™3.1™3.2™3.3™3.4™3.5™3.6™3.7™3.8™4™5™6™7™™NORTHCHINAELECTRICPOWERUNIVERSITY™™™powerquality;qualityofpowersystem™™™™qualityofsupply™NORTHCHINAELECTRICPOWERUNIVERSITY™™™qualityofconsumption™™™™voltagequality™™™™currentquality™NORTHCHINAELECTRICPOWERUNIVERSITYsuitablefortheequipmentwithinvoltageandfrequencytolerance,NORTHCHINAELECTRICPOWERUNIVERSITY21NORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITY™™()()()NORTHCHINAELECTRICPOWERUNIVERSITY™NORTHCHINAELECTRICPOWERUNIVERSITY30™™()()1‰30NORTHCHINAELECTRICPOWERUNIVERSITYGB12325-901.35kV10%;2.10kV7%;3.220V+7%,-10%GB12326-2000dr(h-1)1000(LV)(MV)d1.25%4%(HV)d=1.0%3%d2%(LVMV)d1.5(HV)1.2.LVMVHV1.00.9(1.0)0.80.80.7(0.8)0.61.(PCC),95%;2.,,3.stPltPNORTHCHINAELECTRICPOWERUNIVERSITYGB/T14549-93(%)(kV)0.3854.02.061043.21.6356632.41.211021.60.8(220kV110kV)1.PCC,95%;2.;3.;4.GB/T15543-951.2%,4%;2.1.3%1.;2.PCC,95%72min,30min5min;3.;4.BT/T15945-951.0.2Hz,0.5Hz;2.0.2HzNORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITYPowerQualityIssuesElectricityisarawmaterialbutunlikeanyotherconsumedattheinstantofproductionmanymilesfromproducertransportedoverashared(andvulnerable)networknochancefor‘goods-in’inspectionTheepitomeof‘JustinTime’-butwithoutaclosecustomer/supplierrelationshipNORTHCHINAELECTRICPOWERUNIVERSITY1NORTHCHINAELECTRICPOWERUNIVERSITYNORTHCHINAELECTRICPOWERUNIVERSITY2uantityualityNORTHCHINAELECTRICPOWERUNIVERSITY2NORTHCHINAELECTRICPOWERUNIVERSITY3NORTHCHINAELECTRICPOWERUNIVERSITY3NORTHCHINAELECTRICPOWERUNIVERSITY4NORTHCHINAELECTRICPOWERUNIVERSITYPowerQualityApplicationGuide™themajorityofvoltagedipsandinterruptionsoriginateinthetransmissionanddistribution