太原市城南污水处理厂施工临时用电方案策划方案Word格式文档下载.docx

1、每台变压器三级配电，一级配电由总箱分别设到塔吊、钢筋加工区、木工加工区及管道加工区；二极配电由钢筋加工区、木工加工区及管道加工区分若干路分别向各个用电设备供电，用电设备设置开关形成三级配电箱。1、施工现场用电统计1#变压器用电量统计表序号机械名称型号单位数量单机功率（KW）总功率（KW）CostgKx1塔吊F0/23C台235700.71.020.3平板振动器B2241.14.40.681.083插入式振动棒ZX-50镝灯个3.570.551.520.45钢筋切断机GQ-4090.66钢筋弯曲机GJ-2钢筋调直机GT6/142.26.68电焊机BX2-50038KVA114KVA0.750.8

2、80.45木工圆锯MJ10410生活用电150.811砂浆搅拌机JZ250型安1BX1-50038 KVA266 KVA安2切割机0.51.73安3电动工具302#变压器用电量统计表152KVA平板振动机插入式振动机镝灯3.50打夯机3.06.012224 KVA3#变压器用电量统计表228KVA个 23.50MJ104门式起重机碎石桩施工用电量统计表振动式打桩机75225大卷扬机90小卷扬机7.5452、确定1#变压器用电负荷:（1）塔吊组 Kx=0.30 Cos=0.70 tg=1.02 将Jc=40%统一换算到Jc1=25%的额定容量Pn=70kW Pe=（Jc/Jc1）1/2Pn =

3、（0.40/0.25）1/270=88.55 kW Pjs1=KxPe =0.3088.55=26.56 KwQjs1= Pjs1 tg=26.561.02=27.10kvar（2）平板振动器组 Kx=0.70 Cos=0.68 tg= 1.08 Pjs2=0.704.4 = 3.08 kWQjs2=Pjs2tg=3.081.08=3.33 kvar（3）插入式振动棒组 Kx = 0.70 Cos = 0.68 tg = 1.08 Pjs3=0.704.4 = 3.08kWQjs3=Pjs31.08=3.33kvar（4）镝灯组 Kx=0.4 Cos=0.55 tg=1.52 Pjs4=0.4

4、7=2.8kWQjs4=Pjs4tg=2.81.52=4.26kvar（5）钢筋切断机组 Kx=0.6 Cos=0.7 tg=1.02 Pjs5=0.69=5.4kWQjs5=Pjs5tg=5.41.02=5.5 kvar（6）钢筋弯曲机组 Kx = 0.6 Cos = 0.7 tg = 1.02 Pjs6 = 0.69 =5.4kWQjs6=Pjs61.02=5.51 kvar（7）钢筋调直机组 Pjs7 = 0.66.6 = 3.96kWQjs7=Pjs7tg=3.961.02=4.04 kvar（8）交流电弧焊机组 Kx = 0.45 Cos = 0.75 tg = 0.88 将Jc =

5、60%统一换算到Jc1 =100%的额定容量 Pn=SCos=1520.75=114Kw Pn = （0.60/1）1/2114= 88.31Kw Pjs8=KxPe =0.4588.31 =39.8kW Qjs8=Pjs8tg=39.80.88=35.1 kvar（9）木工圆锯机组 Pjs9=0.64=2.4kWQjs9=Pjs9tg=2.41.02=2.45Kvar（10）生活用电组 Kx=0.8 Pjs10=0.815 = 12kW（11）砂浆搅拌机组 Kx=0.7 Cos=0.68 tg = 1.08 Pjs11=0.74 =2.8kWQjs11=Pjs111.08=3.0Kvar（安

6、1）电焊机组Kx = 0.45 Cos = 0.75 tg = 0.88Cos=2660.75=199.5Kw 199.5= 154.5Kw154.5 = 69.53kWtg=69.5250.88=61.18 kvar（安2）切割机组Kx = 0.7 Cos = 0.5 tg = 1.73Pjs=0.78=5.6KWQjs=Pjstg=5.61.73=9.69kvar（安3）电动工具组Kx = 0.8 Cos = 0.75 tg = 0.88Pjs=0.830=24tg=240.88=21.12kvar因此计算负荷为（KP=0.9，Kq=0.9） 总的有功功率Pjs= KPPjs = 0.9*

7、（26.56+3.08+3.08+2.8+5.4+5.4+3.96+39.8+2.4+12+2.8+69.53+5.6+24）=185.76kW总的无功功率Qjs = KqQjs = 0.9（27.10+3.33+3.33+4.26+5.5+5.51+4.04+35.1+3+6.05+61.18+9.69+21.12）=167.05 Kvar 总的视在功率Sjs = （Pjs2+Qjs2）1/2 =249.83kVA总的计算电流计算Ijs = Sjs/（1.732Ue） = 379.59A根据总的视在功率选取功率为315 kVA三相电力变压器。3、确定2#变压器用电负荷:（2）钢筋切断机组（3

8、）钢筋弯曲机组（4）钢筋调直机组（5）交流电弧焊机组 （6）平板振动器组 Kx=0.70 Cos=0.68 tg=1.08 Pjs6=0.70（7）插入式振动棒组 Pjs7=0.70（8）镝灯组 Kx = 0.4 Cos = 0.55 tg = 1.52 Pjs8 = 0.43.5= 1.4kWtg=1.41.52=2.13kvar（9）砂浆搅拌机组 Kx=0.7 Cos= 0.68 tg=1.08 Pjs9=0.74 = 2.8kW1.08=3.03Kvar（10）打夯机Kx = 0.7 Cos = 0.68 tg = 1.086=4.8tg=4.80.7=3.36kvar（11）木工圆锯机

9、组（安1）交流电弧焊机组 Kx=0.45 Cos=0.75 tg=0.88 将Jc=60%统一换算到Jc1=100%的额定容量Cos=3800.75=285Kw Pn =（0.60/1）1/2285=220.8Kw Pjs11=Kx220.8=99.4kW tg=99.40.88=87.5kvar（安2）电动工具组总的有功功率Pjs = KPPjs=0.9（26.56+5.4+5.4+3.96+39.8+3.08+3.08+1.4+2.8+99.4+24+4.8+2.4）=199.86kWQjs=0.9 （27.1+5.5+5.5+4.04+35.1+3.33+3.33+2.13+3.03+8

10、7.5+21.12+3.36+2.45）=183.15Kvar总的视在功率Sjs = （Pjs2+Qjs2）1/2 =268.00kVAUe） =407.20A根据总的视在功率选取功率为315 kVA三相电力变压器.4、确定3#变压器用电负荷:Cos=2240.75=168Kw 114=130.14Kw130.14 =58.56kW tg=58.560.88=51.53 kvarCos=2280.75=171Kw 171=132.45Kw132.45=59.6kW tg=59.60.88=52.45kvar（安3）门式起重机Kx = 0.6 Cos = 0.7 tg = 1.02Pjs=0.6

11、10=6tg=61.02=6.12kvar（26.56+5.4+5.4+3.96+58.56+3.08+3.08+1.4+2.8+59.6+24+4.8+2.4+6）=186.34kW （27.1+5.5+5.5+4.04+51.53+3.33+3.33+2.13+3.03+52.45+21.12+3.36+2.45+6.12）=171.89Kvar总的视在功率Sjs = （Pjs2+Qjs2）1/2 =253.51kVAUe） =385.180A5、确定打桩机用电负荷（1）打桩机Cos=2250.75=168.75Kw 168.75= 130.71Kw130.71 =58.82kW tg=58.820.88=51.76 kvar（2）大卷扬机90=54tg=541.02=55.08kvar （3）小卷扬机45=27tg=271.02=32.4kvar（4）交流电弧焊机组Cos=1120.75=84Kw Pn = （0.