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1、东郡华府二期B标段工程施工用电专项施工方案安徽晨晖建设工程有限公司二0一二年十一月施工临时用电方案东郡华府二期B标段工程工程; 工程建设地点:定远县工业园区金山路西侧;属于框剪结构; 地上18层; 地下1层;建筑高度:57.5m;标准层层高:2.9m ;总建筑面积:35000平方米;总工期:360天。本工程由定远五星置业有限公司投资建设,华汇工程设计集团有限公司设计,安徽盛世建设项目管理有限公司监理,安徽晨晖建设工程有限公司组织施工;由李纲担任项目经理,马宝林担任技术负责人。一、编制依据低压配电设计规范GB50054-95中国建筑工业出版社建筑工程施工现场供电安全规范GB50194-93中国建
2、筑工业出版社通用用电设备配电设计规范GB50055-93中国建筑工业出版社供配电系统设计规范GB50052-95中国建筑工业出版社施工现场临时用电安全技术规范JGJ46-2005中国建筑工业出版社建筑施工安全检查标准JGJ59-99二、施工条件施工现场用电量统计表:-序号 机具名称 型号 安装功率(kW) 数量 合计功率(kW)1 高压汞灯 3 2 6 2 灰浆搅拌机 UJ100 2.2 1 2.2 3 插入式振动器 ZX35 0.8 1 0.8 4 直流电焊机 AX1-165(AB-165) 6 1 6 5 塔式起重机 QTZ50 51 1 51 6 载货电梯 JT1 7.5 1 7.5 7
3、 高压汞灯 3 2 6 8 插入式振动器 ZX35 0.8 1 0.8 9 木工圆锯 MJ104 3 1 3 10 直流电焊机 AX1-165(AB-165) 6 1 6 11 塔式起重机 QTZ50 51 1 51 12 钢筋调直机 GT4/14 4 1 4 13 钢筋切断机 QJ32-1 3 2 6 14 钢筋弯曲机 GW40 3 2 6 15 插入式振动器 ZX25 0.8 1 0.8 16 直流电焊机 AX1-165(AB-165) 6 1 6 -三、设计内容和步骤1、现场勘探及初步设计:(1)本工程所在施工现场范围内施工前无各种埋地管线。(2)现场采用380V低压供电,设一配电总箱,
4、内有计量设备,采用TN-S系统供电。(3)根据施工现场用电设备布置情况,总箱进线采用导线空气明敷/架空线路敷设,干线采用空气明敷/架空线路敷设,用电器导线采用空气明敷/架空线路敷设。布置位置及线路走向参见临时配电系统图及现场平面图,采用三级配电,三级防护。(4)按照JGJ46-2005规定制定施工组织设计,接地电阻R4。2、确定用电负荷:(1)、高压汞灯Kx = 0.6 Cos = 0.7 tg = 1.02Pjs = 0.661.1 = 3.96 kWQjs = Pjs tg=3.961.02 = 4.04 kvar(2)、灰浆搅拌机Kx = 0.5 Cos = 0.55 tg = 1.52
5、Pjs = 0.52.2 = 1.1 kWQjs = Pjs tg=1.11.52 = 1.67 kvar(3)、插入式振动器Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.30.8 = 0.24 kWQjs = Pjs tg=0.241.02 = 0.24 kvar(4)、直流电焊机Kx = 0.7 Cos = 0.6 tg = 1.33将Jc =50%统一换算到Jc1 =100%的额定容量Pn = 6kWPe = n(Jc/Jc1)1/2Pn = 1(0.5/1)1/26 = 4.24 kWPjs = KxPe =0.74.24 = 2.97kWQjs = Pjs
6、tg=2.971.33 = 3.96 kvar(5)、塔式起重机Kx = 0.85 Cos = 0.6 tg = 1.33将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 51kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/251 = 64.51 kWPjs = KxPe =0.8564.51 = 54.83kWQjs = Pjs tg=54.831.33 = 73.11 kvar(6)、载货电梯Kx = 0.85 Cos = 0.6 tg = 1.33Pjs = 0.857.5 = 6.375 kWQjs = Pjs tg=6.381.33 = 8.5
7、kvar(7)、高压汞灯Kx = 0.6 Cos = 0.7 tg = 1.02Pjs = 0.661.1 = 3.96 kWQjs = Pjs tg=3.961.02 = 4.04 kvar(8)、插入式振动器Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.30.8 = 0.24 kWQjs = Pjs tg=0.241.02 = 0.24 kvar(9)、木工圆锯Kx = 0.65 Cos = 0.6 tg = 1.33Pjs = 0.653 = 1.95 kWQjs = Pjs tg=1.951.33 = 2.6 kvar(10)、直流电焊机Kx = 0.7 Co
8、s = 0.6 tg = 1.33将Jc =50%统一换算到Jc1 =100%的额定容量Pn = 6kWPe = n(Jc/Jc1)1/2Pn = 1(0.5/1)1/26 = 4.24 kWPjs = KxPe =0.74.24 = 2.97kWQjs = Pjs tg=2.971.33 = 3.96 kvar(11)、塔式起重机Kx = 0.85 Cos = 0.6 tg = 1.33将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 51kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/251 = 64.51 kWPjs = KxPe =0.8564.5
9、1 = 54.83kWQjs = Pjs tg=54.831.33 = 73.11 kvar(12)、钢筋调直机Kx = 0.65 Cos = 0.7 tg = 1.02Pjs = 0.654 = 2.6 kWQjs = Pjs tg=2.61.02 = 2.65 kvar(13)、钢筋切断机Kx = 0.65 Cos = 0.7 tg = 1.02Pjs = 0.656 = 3.9 kWQjs = Pjs tg=3.91.02 = 3.98 kvar(14)、钢筋弯曲机Kx = 0.65 Cos = 0.7 tg = 1.02Pjs = 0.656 = 3.9 kWQjs = Pjs tg=
10、3.91.02 = 3.98 kvar(15)、插入式振动器Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.30.8 = 0.24 kWQjs = Pjs tg=0.241.02 = 0.24 kvar(16)、直流电焊机Kx = 0.7 Cos = 0.6 tg = 1.33将Jc =50%统一换算到Jc1 =100%的额定容量Pn = 6kWPe = n(Jc/Jc1)1/2Pn = 1(0.5/1)1/26 = 4.24 kWPjs = KxPe =0.74.24 = 2.97kWQjs = Pjs tg=2.971.33 = 3.96 kvar(17)总的计算负
11、荷计算,总箱同期系数取 Kx = 0.9总的有功功率Pjs = KxPjs = 0.9(3.96+1.1+0.24+2.97+54.83+6.38+3.96+0.24+1.95+2.97+54.83+2.6+3.9+3.9+0.24+2.97) = 132.339 kW总的无功功率Qjs = KxQjs =0.9(4.04+1.67+0.24+3.96+73.11+8.5+4.04+0.24+2.6+3.96+73.11+2.65+3.98+3.98+0.24+3.96) = 171.269 kvar总的视在功率Sjs = ( Pjs2+Qjs2 )1/2 = (132.3392+171.2692)1/2 = 216.441 kVA总的计算电流计算Ijs = Sjs/(1.732Ue) = 216.441/(1.7320.38) = 328.857 A3、1号干线线路上导线截面及分配箱、开关箱内电气设备选择:在选择前应对照平面图和系统图先由用电设备至开关箱计算,再由开关箱至分配箱计算,选择导线及开关设备。分配箱至开关箱,开关箱至用电设备的导线敷设采用铜橡皮绝缘导线空气明敷/架空线路,室外架空铜导线按机械强度的最小截面为10mm2。(1)、高压汞灯开关箱至高压汞灯导线截面及开关箱内电气设备选择(开关箱以下用电器启动后需要系数取