变压器容量计算
表
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名称组别额定功率输入容量需要系数功率因数功率因数正切有功功率无功功率视在功率低压额定电流10kV额定电流有功功率同期系数(0.8~0.9)无功功率同期系数(0.93~0.97)无功功率补偿率用电设备Pe(kW)S(kV.A)KxcosφtgφPjs(kW)Qjs(kvar)Sjs(kV.A)Ijs(A)Igs(A)KpKq△qc1#照明及电热344.000.750.800.75258.00193.50322.502#照明及电热302.000.750.800.75226.50169.88283.13办公及商住楼240.000.700.800.75168.00126.00210.00自动扶梯30.000.600.501.7318.0031.1836.00厨房电力120.000.700.701.0284.0085.70120.00电梯112.000.400.501.7344.8077.6089.60防排烟风机42.000.900.800.7537.8028.3547.25卷帘门48.000.600.701.0228.8029.3841.140.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.00合计1238.00865.90741.581140.05同时系数0.740.90779.31704.501050.541596.140.900.95电容补偿448.350.58电容补偿后0.950.33779.31256.15820.331246.36功率损耗8.2041.02总计0.840.94787.51297.16841.711278.8530~16000kV.A容量变压器10001443.3857.74变压器负荷率0.75~0.850.84变压器应选容量为:1000kV.A无功补偿容量为:448kvar