油库二期项目临时用电施工方案

РQjs = Kx×ΣQjs=1×(195.11+14.76+3.99)=213.86 KvarР9#罐区总的视在功率РSjs = ( Pjs2+Qjs2 )1/2 =235.79 KVAР9#罐区总的计算电流计算РIjs = Sjs/(1.732×Ue)=235.79/(1.732×0.38)=358.26 AР10#罐区用电负荷:Р(1)交流电焊机РKx = 1 Cosφ= 0.40 tgφ= 2.29Р将Jc =50%统一换算到Jc1 =100%的额定容量РPn = Sn ×Cosφ= 375×0.40=150kWРPe = n×(Jc/Jc1)1/2×Pn = 1×(0.50/1.00)1/2×150 = 106.5 kWРPjs = Kx×Pe =1×106.5 =106.5 kWРQjs = Pjs× tgφ=85.2×2.29 = 243.89 kvarР(2)卷板机РKx = 0.30 Cosφ= 0.80 tgφ= 1.33РPjs = 0.30×37 = 11.1 kWРQjs = Pjs× tgφ=11.1×1.33 = 14.76 kvarР(3) 切割机、角磨机、电钻等小工具РKx = 0.30 Cosφ= 0.80 tgφ= 1.33РPjs = 0.30×15 = 4.5 kWРQjs = Pjs× tgφ=4.5×1.33 = 5.99 kvarР10#罐区总的计算负荷计算,因为上述负荷是在高峰期时同时使用,故系数取Kx=1Р10#罐区总的有功功率РPjs = Kx×ΣPjs =1×(106.5+11.1+4.5)=122.1 KWР10#罐区总的无功功率РQjs = Kx×ΣQjs=1×(243.89+14.76+5.99)=264.64 KvarР10#罐区总的视在功率РSjs = ( Pjs2+Qjs2 )1/2 =291.45 KVA