舟山市xx至xxxx疏港公路工程施工临时用电专项方案一、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《电工手册—各种导线载流量表》二、工程概况本工程起点位于城隍头附近的新329国道K266+400处，与临城新区规划道路临长线相接，终点在北蝉乡乡政府东侧与北向疏港公路相交，路线全长6.134km。

公路等级：二级公路标准。

设计行车速度：80km/h。

路基宽度：整体式路基宽度为24.5m，分离式路基宽度为12.25m。

桥涵设计荷载：公路—Ⅰ级。

路面设计标准轴载：双轮组单轴100KN。

隧道建筑限界：建筑限界宽11m，建筑限界(净空)高 5.0m。

本项目共有1-13m小桥一座，隧道一座，全长2427m。

零星涵洞19个。

总投资13392万元。

三、临时用电总体布署情况考虑施工临时用电主要主要集中在xxx隧道施工，根据本项目施工方案总体布署的需求，本项目共设置四台变压器，均设置在xxx隧道进、出口部位。

xxx隧道隧道进口设置两台，主要供应隧道进口掘进施工用电、1号拌合站、碎石场、梁片预制场、工地生活用电。

xxx隧道出口设置两台，主要供应隧道出口掘进施工用电、2号拌合站、工地生活用电。

为保障隧道二衬作业不受停电的影响，在进出口各配置一台发电机，以满足最小施工用电要求。

本项目桥涵结构物零散，且工程量较小，临时用电不大，全线架设临时用电线路不经济，因此配置一台小型发电机供应零星结构物施工临时用电。

四、主要用电设备统计xxx隧道进口用电设备清单xxx隧道出口同时最大用电设备统计五、用电负荷计算1、进口端最大用电负荷计算(1)搅拌机Kx = 0.70 Cosφ = 0.68 tgφ = 1.08Pjs = 0.70×65 = 48.75kWQjs=48.75×1.08=52.65kV A(2)卷扬机Kx = 1.00 Cosφ = 0.6 tgφ = 1.33Pjs = 1.0×15= 15kWQjs=15×1.33=19.95kV A(3)空压机Kx = 0.75 Cosφ = 0.8 tgφ = 0.75Pjs = 0.75×528 = 396kWQjs=396×0.75=297kV A(4)电焊机Kx = 0.35 Cosφ = 0.40 tgφ = 2.29将Jc =50%统一换算到Jc1 =100%的额定容量Pn=82×0.4=32.8kWPe = n×(Jc/Jc1)1/2×Pn =4×(0.50/1.00)1/2×32.8 = 92.77 kWPjs = Kx×Pe =0.35×92.77= 32.47kWQjs=32.47×2.29=74.35kV A(5)注浆机Kx = 0.8 Cosφ = 0.8 tgφ = 0.75Pjs = 0.8×15 = 13.2kWQjs=13.2×0.75=9.9kV A(6)离心式水泵(泥浆泵\水泵)Kx = 0.8 Cosφ = 0.85 tgφ = 0.62Pjs = 0.8×53.6 = 42.88kWQjs=42.88×0.62=26.58kV A(7)风机Kx = 0.75 Cosφ = 0.8 tgφ = 0.75Pjs = 0.75×150 = 120kWQjs=120×0.75=90kV A(8)振动棒Kx = 0.7 Cosφ = 0.64 tgφ = 1.2Pjs = 0.7×50 = 35kWQjs=35×1.2=42kV A(9)碎石机Kx = 0.7 Cosφ = 0.8 tgφ = 0.75Pjs = 0.7×170 = 119kWQjs=119×0.75=89.25kV A(10)钢筋切断机Kx = 0.4 Cosφ = 0.7 tgφ = 1.02Pjs = 0.4×14 =5.6kWQjs=5.6×1.02=5.71kV A(11)钢筋调直机Kx = 0.4 Cosφ = 0.6 tgφ = 1.33Pjs = 0.4×18 = 7.2kWQjs=7.2×1.33=9.58kV A(12)工字钢弯机Kx = 0.4 Cosφ = 0.7 tgφ = 1.02Pjs = 0.4×6 = 2.4kWQjs=2.4×1.02=2.45kV A(13)喷浆机Kx = 0.75 Cosφ = 0.8 tgφ = 0.75Pjs = 0.75×11 = 8.25kWQjs=8.25×0.75=6.19kV A(14)砼输送泵Kx = 0.75 Cosφ = 0.8 tgφ = 0.75Pjs = 0.75×90 = 67.5kWQjs=67.5×0.75=50.63kV A(15)施工照明Kx = 1Pjs = 1×15 = 15kWQjs=0(16)生活用电Kx = 0.9Pjs = 0.9×25 = 22.5kWQjs=0(17)进口端总的计算负荷计算，总箱同期系数取 Kx = 0.90 总的有功功率Pjs = Kx×ΣPjs =0.90×(48.75+15+396+32.47+13.2+42.88+120+35+119+5.6+7.2+2.4+8.25+67.5+15+ 22.5) = 855.68kW总的无功功率Qjs=K x×ΣQjs=0.9×(52.65+19.95+297+74.35+9.9+26.58+90+42+89.25+5.71+9.58+2.45+6.19+50.6 3+0+0) = 698.62kV A总的视在功率S js = (Pjs2+Qjs2)1/2 = (855.682+698.622)1/2= 1104.65 kV A根据计算的总的视在功率选择xxx进口设置630KW和500KW变压器各一台，(630+500)=1130KW>1104.65KW，满足施工临时用电要求。

其高压侧电压为10kV 同施工现场外的高压架空线路的电压级别一致，由当地电力公司架设至拟定洞口变电站处。

2、出口端最大用电负荷计算(1)搅拌机Kx = 0.70 Cosφ = 0.68 tgφ = 1.08Pjs = 0.70×32.5 =22.75kWQjs=22.75×1.08=24.57kV A(2)卷扬机Kx = 1.00 Cosφ = 0.6 tgφ = 1.33Pjs = 1.0×7.5 = 7.5kWQjs=7.5×1.33=9.97kV A(3)空压机Kx = 0.75 Cosφ = 0.8 tgφ = 0.75Pjs = 0.75×396 = 297kWQjs=297×0.75=222.75kV A(4)电焊机Kx = 0.35 Cosφ = 0.40 tgφ = 2.29将Jc =50%统一换算到Jc1 =100%的额定容量Pn=82×0.4=32.8kWPe = n×(Jc/Jc1)1/2×Pn =4×(0.50/1.00)1/2×32.8 = 92.77 kWPjs = Kx×Pe =0.35×92.77= 32.47kWQjs=32.47×2.29=74.35kV A(5)注浆机Kx = 0.8 Cosφ = 0.8 tgφ = 0.75Pjs = 0.8×15=13.2kWQjs=13.2×0.75=9.9kV A(6)离心式水泵(泥浆泵\水泵)Kx = 0.8 Cosφ = 0.85 tgφ = 0.62Pjs = 0.8×49.2 = 39.36kWQjs=42.88×0.62=24.4kV A(7)风机Kx = 0.75 Cosφ = 0.8 tgφ = 0.75Pjs = 0.75×150 = 120kWQjs=120×0.75=90kV A(8)振动棒Kx = 0.7 Cosφ = 0.6 4 tgφ = 1.2Pjs = 0.7×34 = 23.8kWQjs=23.8×1.2=28.56kV A (9)砼输送泵Kx = 0.75 Cosφ = 0.8 tgφ = 0.75 Pjs = 0.75×90 = 67.5kWQjs=67.5×0.75=50.63kV A (10)钢筋切断机Kx = 0.4 Cosφ = 0.7 tgφ = 1.02Pjs = 0.4×14 =5.6kWQjs=5.6×1.02=5.71kV A (11)钢筋调直机Kx = 0.4 Cosφ = 0.6 tgφ = 1.33 Pjs = 0.4×18 = 7.2kWQjs=7.2×1.33=9.58kV A (12)工字钢弯机Kx = 0.4 Cosφ = 0.7 tgφ = 1.02 Pjs = 0.4×6 = 2.4kWQjs=2.4×1.02=2.45kV A (13)喷浆机Kx = 0.75 Cosφ = 0.8 tgφ = 0.75 Pjs = 0.75×11 = 8.25kWQjs=8.25×0.75=6.19kV A (14)施工照明Kx = 1Pjs = 1×15 = 15kWQjs=0(15)生活用电Kx = 0.9Pjs = 0.9×18 = 16.2kWQjs=0(16)进口端总的计算负荷计算，总箱同期系数取 Kx = 0.90 总的有功功率Pjs = Kx×ΣPjs =0.90×(22.75+7.5+297+32.47+13.2+39.36+120+23.8+67.5+5.6+7.2+2.4+8.25+15+16.2) = 605kW总的无功功率Qjs=K x×ΣQjs=0.9×(24.57+9.97+222.75+74.35+9.9+24.4+90+28.56+50.63+5.71+9.58+2.45+6.19+0 +0) = 502.35kV A总的视在功率S js = (Pjs2+Qjs2)1/2 = (6052+502.352)1/2= 786.37 kV A根据计算的总的视在功率选择xxx出口设置设置400KW和500KW变压器各一台，800=KW>786.37KVA，满足施工临时用电要求。