临时用电施工方案

1、 江苏中南建筑产业集团有限责任公司工程一、编制依据1、施工组织设计、项目管理策划书华润置地未来科技城北地块总承包工程施工组织设计；华润置地未来科技城北地块总承包工程项目策划。2、施工图纸华润置地未来科技城北地块总承包工程施工图2017.7.31。3、主要法规、规范、规程、图集表1-3-1 主要参考法规明细序 号类 别名 称编 号1国 家中华人民共和国建筑法2中华人民共和国劳动法3建设工程质量管理条例4行 业建设工程施工现场管理规定建设部令1991年第15号5地 方北京市建设工程施工现场安全防护标准6北京市建设工程施工现场环境保护标准7北京市建设工程施工现场保卫消防标准8北京市建设工程施工现场管

2、理办法北京市人民政府令第72号文件表1-3-2 主要参考规范、规程明细序 号类 别规范、规程名称编 号1国 家建设工程施工现场供用电安全规范GB50194-20142供配电系统设计规范 GB50052-20093低压配电设计规范 GB50054-20114电气装置安装工程接地装置施工及验收规范GB50169-20165建筑电气工程施工质量验收规范GB50303-20156行 业施工现场临时用电安全技术规范JGJ4620057建筑施工安全检查标准JGJ59-20118地方北京市建筑工程施工安全操作规程DBJ01-62-2002二、工程概况华润未来科技城北地块总承包工程项目总建筑面积181108.

3、0平方米。建设单位为北京未来科技城润昌置业有限公司。本工程共9个单体，其中A-01#住宅楼10层，总面积18572.63；A-02#住宅楼10层，总面积12561.63；A-03#住宅楼11层，总面积9226.4；A-04商业及办公楼7层，总面积19481.34；A-05地下车库总面积15668.52；B-01#住宅楼10层，总面积14080.69；B-02#住宅楼7层，总面积21999.53；B-03#住宅楼11层，总面积9652.47；B-04#商业及办公楼8层，总面积32394.69；B-05#开闭站2层，总面积600；B-06#地下车库,总面积26870,结构类型：住宅为剪力墙结构，商

4、业及办公楼为框剪结构，地下车库为板柱结构。表2-1-1 项目基本概况信息序号项 目内 容1工程名称2建设地点3建设单位4设计单位5监理单位6施工单位7质量监理单位8质量标准三、施工部署1、现场现状1.1 华润置地未来科技城北地块总承包工程项目位于北京市昌平区未来科技城核心区，项目施工场地平坦，施工主干道北门紧邻英才北二街，东门紧邻未来科技城主干道。1.2 甲方指定箱变在场地的东侧和北侧，有4台500KW的临电箱变作为现场施工临电电源，其中1号箱变、2号箱变、3号箱变3台箱变供现场使用，4号箱变供售楼部使用，靠近A-01#楼的箱变为1号箱变，靠近B-02#楼的箱变为2号箱变、3号箱变和4号箱变，

5、其中现场施工狭窄，在进行电缆埋设时，应着重注意电缆的防护。2、现场临电布置2.1 施工场区有四台500KVA箱变，三台箱变供现场使用，一台供售楼部使用。2.2 现场设配电室2间，1#一级配电箱一间，2#一级配电箱、3#一级配电箱一间，配电室内设总配电柜3台，1#箱变主要供工人生活区、项目办公室、钢筋场、木工厂、水泵房、A-02#楼塔吊，设置四个二级箱。2#箱变主要供A-01#楼、A-02#楼、A-03#楼、A-04#楼、A-05#地下车库使用，设置四个二级箱。3#箱变主要供B-01#楼、B-02#楼、B-03#楼、B-04#楼、B-05#开闭站、B-06#地下车库等使用，设置四个二级箱。2.3

6、 临时用电采用TN-S三相五线制保护系统供电。总平面布置见附图：施工现场临时用电总平面布置图。四、施工临时用电设计1、负荷计算 由于各楼号开工时间相近，现场高峰期主要施工用电为结构施工阶段及装修阶段，主要用电设备为塔吊、人货电梯、钢筋加工、木工加工、机电加工、焊机、振捣棒、干混砂浆机、现场照明用电，根据机械设备配置表计算用电量负荷。各设备用电量见下表。1.1 1#配电室现场用电最高峰总负荷计算和总电流量计算表4-1-1 主要施工机械配置计划序号名称型号数量单机额定功率（kw）总功率（kw）1塔吊QTZ80（6015）12钢筋套丝机TS16-3243钢筋冷拉机GT6/1224钢筋切断机GJ5-4

7、025钢筋弯曲机GW-4026电焊机BX3-50027木工圆锯MJ10528平板振动器ZB1149插入式振捣器50mm510切割机RNC-3300ZB211空气压缩机XF200212污水泵113加压泵214合计施工现场所用全部电动机设备总功率P1=184.5KW，需用系数取K1=0.6，COS=0.75；施工现场所用全部电焊机总功率P2=57.2KVA，根据施工现场实际情况需要系数取K2=0.5；办公及生产照明用电量P3=500KW。总用电负荷计算：P总=1.05（K1P1/COS+K2P2+K3P3） =1.05（0.6184.5/0.75+0.557.2+0.5500）=1.05(147.

8、2+51.5+250)=456Kw500kw其中: P总总计算负荷；K1、 K2、 K3需用系数；P1 机械设备总负荷；P2 焊机类总负荷；P3 生活及照明负荷；业主提供北区的箱变电源满足要求。1.2 2#配电室现场用电最高峰总负荷计算和总电流量计算表4-1-2 主要施工机械配置计划序号名称型号数量单机额定功率（kw）总功率（kw）1塔吊QTZ80（6015）150502塔吊QTZ80（5613）3501503 人货电梯SC200/2004662644电焊机BX3-500228.657.25平板振动器ZB1141.566插入式振捣器50mm41.567空气压缩机XF20027.5158合计 4

9、91施工现场所用全部电动机设备总功率P1=491kW，需用系数取K1=0.6，COS=0.75；施工现场所用全部电焊机总功率P2=57.2KVA，根据施工现场实际情况需要系数取K2=0.5；室外照明按照18kw考虑。总用电负荷计算：P总=1.05（K1P1/COS+K2P2+K3P3）=1.05（0.6491/0.75+0.557.2+18）=1.05(392.8+26.8+18)=459.5Kw500kw其中: P总总计算负荷；K1、 K2、 K3需用系数；P1 机械设备总负荷；P2 焊机类总负荷；P3 生活及照明负荷；业主提供北区的箱变电源满足要求。1.3 3#配电室现场用电最高峰总负荷计

10、算和总电流量计算表4-1-3 主要施工机械配置计划序号名称型号数量单机额定功率（kw）总功率（kw）1塔吊QTZ80（6517）150502塔吊QTZ80（6015）150503塔吊QTZ80（5613）150504电焊机BX3-500228.657.25平板振动器ZB1141.566插入式振捣器50mm51.57.57空气压缩机XF20027.5158人货电梯SC200/2003661989合计 376.5施工现场所用全部电动机设备总功率P1=376.5kW，需用系数取K1=0.6，COS=0.75；施工现场所用全部电焊机总功率P2=57.2KVA，根据施工现场实际情况需要系数取K2=0.5

11、；室外照明按照18kw考虑。总用电负荷计算：P总=1.05（K1P1/COS+K2P2+K3P3）=1.05（0.6376.5/0.75+0.557.2+18）=1.05(3118.8.8+26.8+8)=358.7w500kw其中: P总总计算负荷；K1、 K2、 K3需用系数；P1 机械设备总负荷；P2 焊机类总负荷；P3 生活及照明负荷；业主提供北区的箱变电源满足要求。2、电缆截面选择2.1 1#一级配电箱计算及导线选择2.1.1 用电负荷计算（1）1-1号分箱设备用电负荷1）空调Kx = 0.2，Cos = 0.8，tg = (1 - Cos2)0.5/ Cos = (1 - 0.82

12、)0.5 / 0.8 = 0.75Pe = nP(e/)0.5=822.5(0.40/0.40)0.5=205WIj1=KxPe/(1.732Uecos)=0.202151000/(1.7323800.80)= 77.86APjs=KxPe =0.20205=41kWQjs=Pjstg=410.75=30.75kvA2）热水器Kx = 0.75，Cos = 0.8，tg = (1 - Cos2)0.5/ Cos = (1 - 0.82)0.5 / 0.8 = 0.75Pe = n P (e/)0.5 =2.00 6 (0.40 / 0.40)0.5 =12kWIj1 = Kx Pe / (1.

13、732 Ue cos) = 0.75 12 1000 / (1.732 380 0.80) = 17.09APjs = Kx Pe = 0.75 17.09= 12.81kWQjs = Pjs tg =12.81 0.75 = 9.61kvA3）厨房Kx = 0.35，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 40.00 (0.20 / 1.00)0.5 = 17.88kWIj1 = Kx Pe / (1.732 Ue cos) = 0.35 17.88 1000

14、/ (1.732 380 0.60) = 15.86APjs = Kx Pe = 0.35 15.86= 5.55WQjs = Pjs tg = 5.55 1.33 = 7.38kvA4）1-1号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 234.88 1000 / (1.732 380 0.75) = 380.66A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max380.66,1.1max(77.86,17.09,15.86) = 380.66A。（2）1-2号分箱设备用电负

15、荷1）空调Kx = 0.2，Cos = 0.8，tg = (1 - Cos2)0.5/ Cos = (1 - 0.82)0.5 / 0.8 = 0.75Pe = n P (e/)0.5 = 30 2.5 (0.40 / 0.40)0.5 = 75WIj1 = Kx Pe / (1.732 Ue cos) = 0.20 215 1000 / (1.732 380 0.80) = 28.49APjs = Kx Pe = 0.20 75= 15kWQjs = Pjs tg = 15 0.75 = 11.25kvA2）热水器Kx = 0.75，Cos = 0.8，tg = (1 - Cos2)0.5/

16、 Cos = (1 - 0.82)0.5 / 0.8 = 0.75Pe = n P (e/)0.5 =2.00 6 (0.40 / 0.40)0.5 =12kWIj1 = Kx Pe / (1.732 Ue cos) = 0.75 12 1000 / (1.732 380 0.80) = 17.09APjs = Kx Pe = 0.75 17.09= 12.81kWQjs = Pjs tg =12.81 0.75 = 9.61kvA3）厨房Kx = 0.35，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n

17、 P (e/)0.5 = 1.00 20.00 (0.20 / 1.00)0.5 =8.94kWIj1 = Kx Pe / (1.732 Ue cos) = 0.35 8.94 1000 / (1.732 380 0.60) = 7.93APjs = Kx Pe = 0.35 8.94= 3.13WQjs = Pjs tg = 3.13 1.33 = 4.16kvA4）1-2号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 95.94 1000 / (1.732 380 0.75) = 155.49A；同时要求分箱用电负荷

18、不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max155.49,1.1max(28.49,17.09,7.93) = 155.49A（3）1-3号分箱设备用电负荷1）钢筋弯曲机Kx = 0.65，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 2.00 3.00 (0.40 / 0.40)0.5 = 6.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 6.00 1000 / (1.732 380 0.70) = 8.46APjs =

19、 Kx Pe = 0.65 6.00 = 2.9kWQjs = Pjs tg = 1.95 1.02 = 2.96kvA2）钢筋冷拉机Kx = 0.65，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 2.00 7.50 (0.40 / 0.40)0.5 = 15kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 15 1000 / (1.732 380 0.70) = 21.15APjs = Kx Pe = 0.65 15= 9.75kWQjs = Pjs

20、 tg =9.75 1.02 = 7.31kvA3）钢筋套丝机Kx = 0.65，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 2.00 3.00 (0.40 / 0.40)0.5 = 6.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 6.00 1000 / (1.732 380 0.70) = 8.46APjs = Kx Pe = 0.65 6.00 = 2.9kWQjs = Pjs tg = 1.95 1.02 = 2.96kvA4）钢筋切断

21、机Kx = 0.65，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 10.00 (0.40 / 0.40)0.5 = 10.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 10.00 1000 / (1.732 380 0.70) = 14.11APjs = Kx Pe = 0.65 10 = 6.5kWQjs = Pjs tg = 6.5 1.02 = 6.634kvA5）交流电焊机Kx = 0.5，Cos = 0.4，tg = (1

22、- Cos2)0.5/ Cos = (1 - 0.42)0.5 / 0.4 = 2.29Pe = n P (e/)0.5 = 1.00 28.6 (0.50 / 1.00)0.5 = 16.55kWIj1 = Kx Pe / (1.732 Ue cos) = 0.50 16.55 1000 / (1.732 380 0.40) = 31.43APjs = Kx Pe = 0.50 16.55 = 8.27kWQjs = Pjs tg = 8.27 2.29 = 18.96kvA6）木工圆锯Kx = 0.65，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.

23、62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 2.00 2.00 (0.40 / 0.40)0.5 = 4.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.65 4.00 1000 / (1.732 380 0.60) = 6.58APjs = Kx Pe = 0.65 4.00 = 2.6kWQjs = Pjs tg = 2.6 1.33 = 3.46kvA7）1-3号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 57.55 1000 / (1.732 380 0

24、.75) = 93.27A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max93.27,1.1max(8.46,21.15,8.46，14.11，31.43， 6.58) = 93.27A（4）1-4号分箱设备用电负荷1）塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 50 (0.40 / 0.40)0.5 =50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 50 10

25、00 / (1.732 380 0.65) = 81.81APjs = Kx Pe = 0.70 50=35kWQjs = Pjs tg =435 1.17 = 40.95kvA2）插入式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx

26、Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA3）平板式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs t

27、g = 0.45 1.02 = 0.46kvA4）空压机Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 7.5 (0.40 / 0.40)0.5 = 7.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 7.5 1000 / (1.732 380 0.70) = 4.88APjs = Kx Pe = 0.30 7.5= 2.25kWQjs = Pjs tg = 2.25 1.02 = 1.69kvA5）1-4号分箱计算负荷用电

28、设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 60.5 1000 / (1.732 380 0.75) = 98.05A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max98.05,1.1max(81.81,0.98,0.98，4.88) = 98.05A（5）1-5号分箱设备用电负荷1）水泵Kx = 0.75，Cos = 0.8，tg = (1 - Cos2)0.5/ Cos = (1 - 0.82)0.5 / 0.8 = 0.75Pe = n P (e/)0.5 = 1.00 5 (0.40

29、/ 0.40)0.5 = 5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.75 5 1000 / (1.732 380 0.80) = 7.83APjs = Kx Pe = 0.75 5 = 3.75kWQjs = Pjs tg = 3.75 0.75 = 2.81kvA2）加压水泵Kx = 0.75，Cos = 0.8，tg = (1 - Cos2)0.5/ Cos = (1 - 0.82)0.5 / 0.8 = 0.75Pe = n P (e/)0.5 = 1.00 18.5 (0.40 / 0.40)0.5 = 18.5kWIj1 = Kx Pe / (1.732

30、 Ue cos) = 0.75 18.5 1000 / (1.732 380 0.80) = 26.35Pjs = Kx Pe = 0.75 18.5 = 13.87kWQjs = Pjs tg = 13.87 0.75 = 10.4kvA3）水泵Kx = 0.75，Cos = 0.8，tg = (1 - Cos2)0.5/ Cos = (1 - 0.82)0.5 / 0.8 = 0.75Pe = n P (e/)0.5 = 1.00 18.5 (0.40 / 0.40)0.5 = 18.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.75 18.5 1000 / (1

31、.732 380 0.80) = 26.35Pjs = Kx Pe = 0.75 18.5 = 13.87kWQjs = Pjs tg = 13.87 0.75 = 10.4kvA4）1-5号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 42 1000 / (1.732 380 0.75) = 68.07A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max68.07,1.1max(7.83,26.35,26.35) = 68.07A（6）总箱计算负荷总的计算负荷计算，总配电箱用电设

32、备同期使用系数取Kx = 0.80总的有功功率： Pjs = KxPjs = 0.80 193.31 = 154,65kW总的无功功率： Qjs = KxQjs = 0.80 182.20 = 145.76kvar总的视在功率： Sjs = (Pjs2 + Qjs2)0.5 = (154.65154.65+145.76145.76)0.5 =360.47kVA总的计算电流计算：Ijs = Sjs 1000 /(1.732 Ue) = 360.47 1000 / (1.732 380) = 554.7A,同时要求总箱下计算负荷不得小于分箱计算负荷的1.1倍，故：Ijs = max554.7,1.

33、1max(380.66,155.49,93.27,98.05,68.07) = 554.7A2.1.2 导线及开关箱内电气设备选择统筹考虑，按照最大电流选取二级配电箱进线、断路器，开关箱进线及漏电保护器。经计算，开关箱进线最大电流81.81A，二级箱进线最大电流380.66A，则选用开关箱进线：YJV-0.6/1kV-335+216，漏电保护器：DZ20L-160/4300。二级箱进线：1#二级箱VLV-0.6/1kV-4185+195，2#二级箱VLV-0.6/1kV-4150+170，3#二级箱VLV-0.6/1kV-495+150，4#二级箱VLV-0.6/1kV-495+150，5#二

34、级箱VLV-0.6/1kV-450+125，漏电保护器均为：DZ20L-160/4300。2.1.3 总箱的进线、开关箱内电气设备及变压器选择根据前面计算的总箱计算负荷，知：Ijs = 554.7A。选择电缆YJV-0.6/1kV-3240+2120，安全载流量为960A 554.7A，电缆截面面积为240mm2。按照允许电压降为5%，导线截面为：S0 = KxPeL0/(C5) = 0.80 490.87 25.00 / (77.00 5.00) = 25.50mm2 240mm2选择总进线开关：DZ20Y-630/3300，其熔体额定电流为Ir = 630A。符合要求。2.2 2#一级配电

35、箱计算及导线选择2.2.1 用电负荷计算（1）2-1号分箱设备用电负荷1）塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 50 (0.40 / 0.40)0.5 =50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 50 1000 / (1.732 380 0.65) = 81.81APjs = Kx Pe = 0.70 50=35kWQjs = Pjs tg =435 1.17 = 40.95kvA2）插入式

36、振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA3）平板式振动器Kx = 0.3，Cos = 0.7，tg = (1 - C

37、os2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA4）空压机Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 =

38、 1.02Pe = n P (e/)0.5 = 1.00 7.5 (0.40 / 0.40)0.5 = 7.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 7.5 1000 / (1.732 380 0.70) = 4.88APjs = Kx Pe = 0.30 7.5= 2.25kWQjs = Pjs tg = 2.25 1.02 = 1.69kvA5）施工电梯Kx = 0.3，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 66.00 (

39、0.40 / 0.40)0.5 = 66.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 66.00 1000 / (1.732 380 0.60) = 50.14APjs = Kx Pe = 0.30 66.00 = 19.80kWQjs = Pjs tg = 19.80 1.33 = 26.40kvA6）2-1号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 126.5 1000 / (1.732 380 0.75) = 205.1A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负

40、荷的1.1倍，故：Ijs = max205.1,1.1max(81.81,0.98,0.98，4.88,50.14) = 205.1A（2）2-2号分箱设备用电负荷1）塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 2.00 50 (0.40 / 0.40)0.5 =50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 50 1000 / (1.732 380 0.65) = 81.81APjs = Kx Pe = 0.7

41、0 50=35kWQjs = Pjs tg =435 1.17 = 40.95kvA2）插入式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02

42、= 0.46kvA3）平板式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA4）空压机Kx = 0.3，Cos = 0.7，

43、tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 7.5 (0.40 / 0.40)0.5 = 7.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 7.5 1000 / (1.732 380 0.70) = 4.88APjs = Kx Pe = 0.30 7.5= 2.25kWQjs = Pjs tg = 2.25 1.02 = 1.69kvA5）施工电梯Kx = 0.3，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)

44、0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 66.00 (0.40 / 0.40)0.5 = 66.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 66.00 1000 / (1.732 380 0.60) = 50.14APjs = Kx Pe = 0.30 66.00 = 19.80kWQjs = Pjs tg = 19.80 1.33 = 26.40kvA6）2-2号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 126.5 1000 / (1.73

45、2 380 0.75) = 205.1A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max205.1,1.1max(81.81,0.98,0.98，4.88,50.14) = 205.1A（3）2-3号分箱设备用电负荷1）塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 50 (0.40 / 0.40)0.5 =50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 50 10

46、00 / (1.732 380 0.65) = 81.81APjs = Kx Pe = 0.70 50=35kWQjs = Pjs tg =435 1.17 = 40.95kvA2）插入式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx

47、Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA3）平板式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs t

48、g = 0.45 1.02 = 0.46kvA4）空压机Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 7.5 (0.40 / 0.40)0.5 = 7.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 7.5 1000 / (1.732 380 0.70) = 4.88APjs = Kx Pe = 0.30 7.5= 2.25kWQjs = Pjs tg = 2.25 1.02 = 1.69kvA5）施工电梯Kx = 0.3

49、，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 66.00 (0.40 / 0.40)0.5 = 66.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 66.00 1000 / (1.732 380 0.60) = 50.14APjs = Kx Pe = 0.30 66.00 = 19.80kWQjs = Pjs tg = 19.80 1.33 = 26.40kvA6）2-3号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = K

50、x Pe / (1.732 Ue Cos) = 0.80 126.5 1000 / (1.732 380 0.75) = 205.1A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max205.1,1.1max(81.81,0.98,0.98，4.88,50.14) = 205.1A（4）2-4号分箱设备用电负荷1）塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.652)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 50 (0.40 / 0.40)0.5

51、 =50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 50 1000 / (1.732 380 0.65) = 81.81APjs = Kx Pe = 0.70 50=35kWQjs = Pjs tg =435 1.17 = 40.95kvA2）插入式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.

52、30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA3）平板式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) =

53、0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA4）空压机Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 7.5 (0.40 / 0.40)0.5 = 7.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 7.5 1000 / (1.732 380 0.70) = 4.88APjs = Kx Pe = 0.30 7.5= 2.25kWQ

54、js = Pjs tg = 2.25 1.02 = 1.69kvA5）施工电梯Kx = 0.3，Cos = 0.6，tg = (1 - Cos2)0.5/ Cos = (1 - 0.62)0.5 / 0.6 = 1.33Pe = n P (e/)0.5 = 1.00 66.00 (0.40 / 0.40)0.5 = 66.00kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 66.00 1000 / (1.732 380 0.60) = 50.14APjs = Kx Pe = 0.30 66.00 = 19.80kWQjs = Pjs tg = 19.80 1.33

55、= 26.40kvA6）2-3号分箱计算负荷用电设备同期使用系数Kx=0.80；Ijs = Kx Pe / (1.732 Ue Cos) = 0.80 126.5 1000 / (1.732 380 0.75) = 205.1A；同时要求分箱用电负荷不得小于分箱下用电设备最大计算负荷的1.1倍，故：Ijs = max205.1,1.1max(81.81,0.98,0.98，4.88,50.14) = 205.1A（5）总箱计算负荷总的计算负荷计算，总配电箱用电设备同期使用系数取Kx = 0.80总的有功功率： Pjs = KxPjs = 0.80 222.8 = 178.45kW总的无功功率：

56、 Qjs = KxQjs = 0.80 279.84 =223.87kvar总的视在功率： Sjs = (Pjs2 + Qjs2)0.5 = (178.45k 178.45k + 223.87 223.87)0.5 =367.58kVA总的计算电流计算：Ijs = Sjs 1000 /(1.732 Ue) = 367.58 1000 / (1.732 380) = 558.5A,同时要求总箱下计算负荷不得小于分箱计算负荷的1.1倍，故：Ijs = max558.5,1.1max(205.1,205.1,205.1205.1) = 558.5A2.2.2 导线及开关箱内电气设备选择统筹考虑，按照

57、最大电流选取二级配电箱进线、断路器，开关箱进线及漏电保护器。经计算，开关箱进线最大电流81.81A，二级箱进线最大电流205.1A，则选用开关箱进线：YJV-0.6/1kV-335+216，漏电保护器：DZ20L-160/4300。二级箱进线：1#二级箱VLV-0.6/1kV-4150+170，2#二级箱VLV-0.6/1kV-4150+170，3#二级箱VLV-0.6/1kV-4150+170，4#二级箱VLV-0.6/1kV-4150+170，漏电保护器均为：DZ20L-160/4300。2.2.3 总箱的进线、开关箱内电气设备及变压器选择根据前面计算的总箱计算负荷，知：Ijs =558.

58、5A。选择电缆YJV-0.6/1kV-3240+2120，安全载流量为960A 558.5A，电缆截面面积为240mm2。按照允许电压降为5%，导线截面为：S0 = KxPeL0/(C5) = 0.80 490.87 25.00 / (77.00 5.00) = 26.28mm2 240mm2选择总进线开关：DZ20Y-630/3300，其熔体额定电流为Ir = 630A。符合要求。2.3 3#一级配电箱计算及导线选择2.3.1 用电负荷计算（1）3-1号分箱设备用电负荷1）塔式起重机Kx = 0.7，Cos = 0.65，tg = (1 - Cos2)0.5/ Cos = (1 - 0.65

59、2)0.5 / 0.65 = 1.17Pe = n P (e/)0.5 = 1.00 50 (0.40 / 0.40)0.5 =50kWIj1 = Kx Pe / (1.732 Ue cos) = 0.70 50 1000 / (1.732 380 0.65) = 81.81APjs = Kx Pe = 0.70 50=35kWQjs = Pjs tg =435 1.17 = 40.95kvA2）插入式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00

60、 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1 = Kx Pe / (1.732 Ue cos) = 0.30 1.5 1000 / (1.732 380 0.70) = 0.98APjs = Kx Pe = 0.30 1.5 = 0.45kWQjs = Pjs tg = 0.45 1.02 = 0.46kvA3）平板式振动器Kx = 0.3，Cos = 0.7，tg = (1 - Cos2)0.5/ Cos = (1 - 0.72)0.5 / 0.7 = 1.02Pe = n P (e/)0.5 = 1.00 1.5 (0.40 / 0.40)0.5 = 1.5kWIj1