住宅小區(qū)負(fù)荷與變壓器容量的選擇(含實(shí)例)

0.4101200 0.33200 0.26)0.4101200 0.33200 0.26)1.20.4101200 0.33200 0.26)0.4101200 0.33200 0.26)1.2住宅小區(qū)負(fù)荷與變壓器容量的選擇(含實(shí)例)2013-05-2714:31??? ??? ??? :1549()11.1TOC\o"1-5"\h\zPjs( )Pjs=PeiNi1000(kW)Pei W/( )Ni ( )11(m2)??80?80100?100(W)?30004000?40006000?70008000(A)?1418?1827?3236(mm2)?4?6?10(A)?5(20)?5(20)?10(40)(PM)PM=pjsn(n n 251002222PM=PedSnPMkWPedW/m2m2(9)(1900220019002200(1)PD=PDinDPDkWPDikW2)?1?2?3?4?5?6??12??1?2?3?4?5?6??12?coscosy 0.80.9?1?2?3?4?5?6??12??1?2?3?4?5?6??12?coscosy 0.80.9?1?0.91?0.85?0.8?0.76?0.72??0.48(2)PMS=PSiNSiPMS (PSiNSi⑶pwm=pwsnwPWMPWS kWnwPL(kW)(4)PL(kW)1.3P=PM+PD+PMS+PWM+PL(kW)2SPcosy(kVA)322kW 337kW( ) 1322kW 337kW( ) 13TOC\o"1-5"\h\z3 9( )216 33000m3 1 4( ) ( )2 1000kVA800kVA1000kVA8000W/ 2000W/6000W/ Pjs=PeiNi1000=60002161000=1296(kW)TOC\o"1-5"\h\zPM=Pjsn=12960.33427.68(kW)+( 216200 n0.33 n)10kW12 0.48PD=PDinD=10120.48=57.6(kW)Pjs+PD=485.28(kW)150kWPWM=PWSnW=1500.5=75(kW)(nW0.5)TOC\o"1-5"\h\z35.5kW 12.2kW 11.1kW 215kW( ) 218.5kW( )PMS=PSiNSi=5.53+2.2+1.11+151+18.51=53.3(kW)PL30kW( )330kW 23kW( ) 20.33kWPBj=303+20.33+31=93.66(kW)P=PM+PD+PMS+PWM+PL+PBj=427.68+57.6+75+53.3+30+93.66=737.24(kW)SP0.8=737.240.8=921.55(kVA)<1000kva 1000kva<>800kVA2240kW 330kW

1.5kW23kW(24h1.5kW23kW(24h<1kwh() 20.33kw 27.5kw<>1200140018002200Pj=2240+330+322+237+1.5+3+20.33+27.5=730.16(kW)0.9 cosq0.85S=Pj0.9cosq=657,140.85=773.11(kVA)<800(kva)800kva<800(kva)800kva</800(KVA)800KVA<1