商业楼10kv配变电所电气设计

供配电工程课程设计任务书/r/n1．题目/r/n万马商业楼10kV配变电所电气设计/r/n2/r/n．原始资料/r/n2.1课题原始资料/r/n各课题的工程概况及负荷详见工程图纸资料〔另附〕。/r/n2./r/n2/r/n/r/n供电条件/r/n〔1〕供电公司110/10kV变电所位于工程附近2.5km处，10kV母线短路电流为20kA，根据需要可提供应用户1路或2路10kV电缆专线供电。/r/n〔2〕采用高供高计，要求月平均功率因数不少于/r/n0.9/r/n5。不同电价负荷，计量分开。如学校用电统一执行居民电价，公共建筑执行商业照明电价、非工业动力电价，工业企业生产用电统一执行大工业电价、职工生活用电执行居民电价。居住区采用高供低计〔住户每单元集中设置计量表箱、小区公建在配电室低压出线柜设置计量表〕。/r/n〔3〕供电部门要求用户变电所高压计量柜在进线主开关柜之前，且第一柜为隔离柜。/r/n2./r/n3/r/n/r/n其他资料/r/n当地最热月的日最高气温平均值为35/r/n℃/r/n，年最热月地下/r/n0.8m/r/n处最高温度平均值为25/r/n℃/r/n。当地年雷暴日数为35天。当地地质平坦，海拔高度为100/r/nm/r/n，土壤为普通粘土。/r/n3．具体任务及技术要求/r/n本次课程设计共1.5周时间，具体任务与日程安排如下：/r/n第1周周一：熟悉资料及设计任务，负荷计算与无功补偿、变压器选择。/r/n周二：供配电系统一次接线设计，设计绘制变电所高压侧主接线图。/r/n周三：设计绘制变电所低压侧主接线图。/r/n周四：设计绘制变电所低压侧主接线图。/r/n周五：设计绘制变电所电气平面布置图。/r/n第2周周一：短路电流计算，上下压电器及电线电缆选择计算。/r/n周二：编制设计报告正文〔设计说明书、计算书〕电子版。/r/n周三：整理打印设计报告，交设计成果。/r/n要求根据设计任务及工程实际情况，按照平安可靠、技术先进、经济合理的要求，完成10kV变电所的电气设计〔变电所出线保护电器选择整定及电缆截面选择设计分工合作完成〕。设计深度应到达初步设计要求，制图应符合国家标准要求。/r/n4．实物内容及要求/r/n课程设计报告文本内容包括：1.封面；2.任务书；3.目录；4.正文；5.致谢；6.参考文献；7.附录〔课程设计图纸〕。/r/n4.1/r/n设计报告正文内容/r/n〔1〕工程概况与设计依据/r/n〔2〕负荷计算与无功补偿设计/r/n〔3〕供配电系统一次接线设计/r/n〔4〕变电所设计/r/n〔5〕短路计算与上下压电器选择/r/n〔6〕电线电缆选择/r/n〔7〕低压配电线路保护设计/r/n设计报告正文编写的一般要求是：必须说明设计主题，突出阐述设计方案、文字精炼、计算简明，条理清晰、层次清楚。〔变电所出线局部内容各有侧重〕/r/n设计报告正文采用A4纸打印。/r/n4.2/r/n设计图纸/r/n〔1〕变电所高压侧电气主接线图〔1张A3〕/r/n〔2〕变电所低压侧电气主接线图〔2～4张A3〕/r/n〔3〕变电所电气平面布置图〔1张A3〕/r/n设计图纸绘制的一般要求是：满足设计要求，遵循制图标准，依据设计标准，比例适当、布局合理，讲究绘图质量。〔变电所出线局部内容各有侧重〕/r/n设计图纸采用A3图纸CAD出图。与报告正文一起装订成册。/r/n5．设计指导书及参考文献/r/n[1]/r/n/r/n翁双安．供配电工程设计指导/r/n[/r/nM/r/n]/r/n．北京：机械工业出版社，2021/r/n[/r/n2/r/n]/r/n/r/n莫岳平、翁双安．供配电工程/r/n[/r/nM/r/n]/r/n．北京：机械工业出版社，2021/r/n[/r/n3/r/n]/r/n/r/n任元会．工业与民用配电设计手册/r/n[/r/nM/r/n]/r/n．3版．北京：中国电力出版社，2005/r/n6．学生任务分配/r/n表1课程设计任务分配表/r/n序号/r/n课题名称/r/n班级/r/n学号〔末两位〕/r/n备注/r/n14/r/n万马商业楼10kV配变电所电气设计/r/n电气0801/r/n34，35/r/n变电所出线分工合作/r/n电气0802/r/n33，34，35/r/n7．完成期限/r/n任务书写于2021年6月8日，完成期限为2021年7月8日/r/n8．指导教师/r/n翁双安/r/n目录/r/n1/r/n/r/n工程概况与设计依据/r/n…………/r/n.6/r/n1.1工程概况/r/n…………………/r/n6/r/n1.2/r/n/r/n设计依据/r/n…………………/r/n6/r/n2/r/n负荷计算及无功补偿设计……………………/r/n.7/r/n2.1负荷数据/r/n…………………/r/n7/r/n2.2/r/n负荷计算…………………/r/n9/r/n2.2.1照明负荷低压配电干线负荷计算/r/n………………/r/n./r/n…/r/n9/r/n2.2.2电力负荷与平时消防负荷低压配电干线负荷计算/r/n………………/r/n.10/r/n2.2.3火灾时消防负荷低压配电干线负荷计算/r/n…………/r/n11/r/n2.2.4变电所负荷计算/r/n……………………/r/n13/r/n3/r/n供配电系统一次接线设计……………………/r/n14/r/n3.1/r/n负荷分级及供电电源…………………/r/n.14/r/n3.2/r/n电压/r/n选择/r/n与/r/n电能质量/r/n…………………/r/n.15/r/n3.3/r/n/r/n电力/r/n变压器选择………/r/n.15/r/n3.4/r/n变电所电气主接线设计………………/r/n.18/r/n3.4.1变电所高压侧电气主接线设计/r/n…………………/r/n..18/r/n3.4.2变电所低压侧电气主接线设计/r/n…………………/r/n..18/r/n4/r/n变电所/r/n布置/r/n设计………………/r/n19/r/n4.1总体布置/r/n…………………/r/n19/r/n4.2配电装置通道与平安净距/r/n………………/r/n19/r/n5/r/n/r/n短路电流计算与/r/n上下压电器选择……………/r/n20/r/n5.1/r/n/r/n变电所高压侧/r/n短路电流计算…………/r/n.20/r/n5.2/r/n低压电网短路电流计算………………/r/n.20/r/n5.2.1变压器低压侧短路电流计算/r/n……/r/n..20./r/n5.2.2低压配电线路短路电流计算/r/n……/r/n..24/r/n5.3/r/n高压电器选择…………/r/n.28/r/n5.4高压互感器选择/r/n………/r/n.29/r/n5.5/r/n低压/r/n断路器的初步/r/n选择………………/r/n.30/r/n5.5.1配电干线保护断路器过电流脱扣器的初步选择/r/n………………/r/n...30/r/n5.5.2变电所低压电源进线断路器的初步选择/r/n………/r/n...32/r/n6电线电缆选择/r/n…………………/r/n33/r/n6.1高压进出线电缆选择/r/n…………………/r/n.33/r/n6.2变电所硬母线选择/r/n……………………/r/n.34/r/n6.3低压配电干线电缆选择/r/n………………/r/n.36/r/n7低压配电线路保护设计/r/n………/r/n.41/r/n7.1低压配电线路的保护设置/r/n……………/r/n.41/r/n7.2低压断路器过电流脱扣器的整定/r/n……/r/n.41/r/n7.2.1配电干线保护断路器过电流脱扣器的整定/r/n……/r/n..41/r/n7.2.2变电所低压电源进线断路器的整定/r/n……………/r/n..44/r/n致谢/r/n………………/r/n46/r/n参考文献/r/n…………/r/n47/r/n附录设计图纸/r/n…………………/r/n..47/r/n1/r/n/r/n工程概况与设计依据/r/n1.1工程概况/r/n本工程为扬州市万马商业楼，该工程为地下室一层，地上七层，框架结构，现浇楼板。/r/n本工程低压配电电压为220/380V,电源引自地下变配电室，变配电室电气参见当地有关部门施工图纸，处穿钢管保护，同时做好防水处理。/r/n1.2/r/n设计依据/r/n设计根据国家有关电气标准及江苏建设标准,建筑专业提供的平、立、剖面甲方提供的设计要求。/r/n1.?民用建筑电气设计标准?/r/nJGJ/T16-92/r/n2.?供配电设计标准?/r/nGB50052-95/r/n3.?10kV及以下变电所设计标准?/r/nGB50053-94/r/n4.?低压配电设计标准?/r/nGB50054-95/r/n5.?建筑设计防火标准?GB50016-2006(2006版)/r/n6.?建筑物防雷设计标准?GB50057-94(2000版)/r/n7.?建筑电气工程施工质量验收标准?GB-50303-2002/r/n8.?剩余电流动作保护装置安装和运行?GB-13955-2005/r/n9.?建筑照明设计标准?GB50034-2004/r/n10.?建筑物电子信息系统防雷技术标准?GB50343-2004/r/n11.?通用用电设备配电设计标准?/r/nGB50055-93/r/n12.国家和江苏建筑标准设计有关标准等。/r/n2负荷计算及无功补偿设计/r/n2.1负荷数据/r/n商业楼有220V单相用电设备〔如照明回路〕，也有380V三相用电设备(如电力负荷)。各类负荷中有平时需要运行的用电设备，也有在发生火灾时才需要运行的消防用电设备。/r/n根据方案设计，各层用电设备负荷数据见表2-1。/r/n表2-1本建筑工程各层用电设备负荷数据/r/n用电设备名称/r/n配电干线/r/n额定容量/kW/r/n功率因数/r/n照明回路/r/n一层商店照明/r/nW5/r/n196/r/n0.9/r/n二层商店照明/r/nW9/r/n80/r/n0.9/r/n三层商店照明/r/nW11/r/n80/r/n0.9/r/n4~7层照明/r/nW13/r/n800/r/n0.85/r/n地下室车库照明/r/nW61/r/n6.3/r/n0.9/r/n地下室车库照明/r/nW63/r/n6.4/r/n0.9/r/n设备房照明/r/nW65/r/n3.9/r/n0.85/r/n电力及平时消防回路/r/n消防控制中心/r/nW1/r/n10/r/n0.8/r/n4~7层电力/r/nW15/r/n600/r/n0.9/r/n消防电梯/r/nW47/r/n30/r/n0.7/r/n屋面电梯/r/nW49/r/n30/r/n0.8/r/n屋面稳压泵/r/nW51/r/n11/r/n0.8/r/n消防电梯/r/nW53/r/n15/r/n0.7/r/n地下室电力/r/nW55/r/n11.5/r/n0.9/r/n地下室电力/r/nW57/r/n13.6/r/n0.9/r/n锅炉房电力/r/nW59/r/n50.25/r/n0.9/r/n空调机房水泵冷却塔/r/nW60/r/n303/r/n0.8/r/n公用变电所/r/nW67/r/n10/r/n0.9/r/n地下室通风机/r/nW69/r/n2.2/r/n0.8/r/n地下室通风机/r/nW71/r/n11/r/n0.8/r/n地下室通风机/r/nW73/r/n2.2/r/n0.8/r/n地下室排烟风机/r/nW75/r/n22/r/n0.8/r/n地下室排烟风机/r/nW77/r/n11/r/n0.8/r/n地下室排烟风机/r/nW79/r/n22/r/n0.8/r/n制冷机组/r/nW81/r/n257/r/n0.8/r/n生活泵/r/nW84/r/n17.2/r/n0.8/r/n火灾时消防回路/r/n消防控制中心/r/nW1/r/n10/r/n0.8/r/n应急照明/r/nW3/r/n25/r/n0.9/r/n应急照明/r/nW7/r/n10/r/n0.9/r/n四层屋面正压风机/r/nW17/r/n22.5/r/n0.8/r/n四层屋面正压风机/r/nW19/r/n30/r/n0.8/r/n四层排烟风机/r/nW21/r/n7.5/r/n0.8/r/n四层排烟风机/r/nW23/r/n7.5/r/n0.8/r/n五层排烟风机/r/nW25/r/n7.5/r/n0.8/r/n五层排烟风机/r/nW27/r/n7.5/r/n0.8/r/n六层排烟风机/r/nW29/r/n7.5/r/n0.8/r/n六层排烟风机/r/nW31/r/n7.5/r/n0.8/r/n七层排烟风机/r/nW33/r/n7.5/r/n0.8/r/n七层排烟风机/r/nW35/r/n7.5/r/n0.8/r/n内廊排烟风机/r/nW37/r/n4/r/n0.8/r/n屋面正压风机/r/nW39/r/n30/r/n0.8/r/n内廊排烟风机/r/nW41/r/n8/r/n0.8/r/n屋面正压风机/r/nW43/r/n30/r/n0.8/r/n屋面正压风机/r/nW45/r/n22.5/r/n0.8/r/n消防电梯/r/nW47/r/n30/r/n0.7/r/n屋面稳压泵/r/nW51/r/n11/r/n0.8/r/n消防电梯/r/nW53/r/n15/r/n0.7/r/n公用变电所/r/nW67/r/n10/r/n0.9/r/n地下室通风机/r/nW69/r/n2.2/r/n0.8/r/n地下室通风机/r/nW71/r/n11/r/n0.8/r/n地下室通风机/r/nW73/r/n2.2/r/n0.8/r/n地下室排烟风机/r/nW75/r/n22/r/n0.8/r/n地下室排烟风机/r/nW77/r/n11/r/n0.8/r/n地下室排烟风机/r/nW79/r/n22/r/n0.8/r/n消火栓泵/r/nW86/r/n37/r/n0.8/r/n喷淋泵/r/nW88/r/n110/r/n0.8/r/n喷雾泵/r/nW90/r/n37/r/n0.8/r/n2.2负荷计算/r/n按需要系数法确定三相用电设备组计算负荷的根本公式如下：/r/n有功功率〔kw〕P/r/nC/r/n=K/r/nd/r/nP/r/nC/r/n无功功率〔kvar〕Q/r/nC/r/n=P/r/nC/r/ntan/r/nφ/r/n视在功率〔kVA〕/r/nS/r/nC/r/n=P/r/nC/r/n/cosφ/r/n计算电流〔A〕/r/nI/r/nC/r/n=S/r/nC/r/n/(/r/nU/r/nN/r/n)/r/n2.2.1照明负荷低压配电干线负荷计算/r/n照明负荷回路低压配电干线计算负荷按照需要系数法计算，见表2-2。/r/n表2-2/r/n照明负荷低压配电干线负荷计算/r/n变电所负荷计算表/r/n用电设备名称/r/n照明回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n一层商店照明/r/nW5/r/n196/r/n0.7/r/n0.9/r/n137.2/r/n66.4/r/n152.4/r/n231.7/r/n二层商店照明/r/nW9/r/n80/r/n0.8/r/n0.9/r/n64.0/r/n31.0/r/n71.1/r/n108.1/r/n三层商店照明/r/nW11/r/n80/r/n0.8/r/n0.9/r/n64.0/r/n31.0/r/n71.1/r/n108.1/r/n4~7层照明/r/nW13/r/n800/r/n0.7/r/n0.85/r/n560.0/r/n347.1/r/n658.8/r/n1001.4/r/n地下室车库照明/r/nW61/r/n6.3/r/n1/r/n0.9/r/n6.3/r/n3.1/r/n7.0/r/n10.6/r/n地下室车库照明/r/nW63/r/n6.4/r/n1/r/n0.9/r/n6.4/r/n3.1/r/n7.1/r/n10.8/r/n设备房照明/r/nW65/r/n3.9/r/n1/r/n0.85/r/n3.9/r/n2.4/r/n4.6/r/n7.0/r/n合计/r/n1172.6/r/n0.72/r/n0.87/r/n841.8/r/n484.1/r/n971.1/r/n1476.0/r/n乘同时系数〔0.75/0.80)/r/n1172.6/r/n0.54/r/n0.85/r/n631.4/r/n387.3/r/n740.7/r/n1125.8/r/n2.2.2电力负荷与平时消防负荷低压配电干线负荷计算/r/n电力负荷与平时消防负荷低压配电干线负荷计算采用需要系数法计算，见表2-3。/r/n表2-3/r/n电力负荷与平时消防负荷低压配电干线负荷计算/r/n用电设备名称/r/n电力及平时消防回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n消防控制中心/r/nW1/r/n10/r/n1/r/n0.8/r/n10.0/r/n7.5/r/n12.5/r/n19.0/r/n4~7层电力/r/nW15/r/n600/r/n0.7/r/n0.9/r/n420.0/r/n203.4/r/n466.7/r/n709.3/r/n消防电梯/r/nW47/r/n30/r/n1/r/n0.7/r/n30.0/r/n30.6/r/n42.9/r/n65.1/r/n屋面电梯/r/nW49/r/n30/r/n1/r/n0.8/r/n30.0/r/n22.5/r/n37.5/r/n57.0/r/n屋面稳压泵/r/nW51/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n消防电梯/r/nW53/r/n15/r/n1/r/n0.7/r/n15.0/r/n15.3/r/n21.4/r/n32.6/r/n地下室电力/r/nW55/r/n11.5/r/n0.8/r/n0.9/r/n9.2/r/n4.5/r/n10.2/r/n15.5/r/n地下室电力/r/nW57/r/n13.6/r/n0.8/r/n0.9/r/n10.9/r/n5.3/r/n12.1/r/n18.4/r/n锅炉房电力/r/nW59/r/n50.25/r/n0.8/r/n0.9/r/n40.2/r/n19.5/r/n44.7/r/n67.9/r/n空调机房水泵冷却塔/r/nW60/r/n303/r/n0.8/r/n0.8/r/n242.4/r/n181.8/r/n303.0/r/n460.6/r/n公用变电所/r/nW67/r/n10/r/n0.8/r/n0.9/r/n8.0/r/n3.9/r/n8.9/r/n13.5/r/n地下室通风机/r/nW69/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室通风机/r/nW71/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室通风机/r/nW73/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室排烟风机/r/nW75/r/n22/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n地下室排烟风机/r/nW77/r/n11/r/n/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室排烟风机/r/nW79/r/n22/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n制冷机组/r/nW81/r/n257/r/n1/r/n0.8/r/n257.0/r/n192.8/r/n321.3/r/n488.3/r/n生活泵/r/nW84/r/n17.2/r/n1/r/n0.8/r/n17.2/r/n12.9/r/n21.5/r/n32.7/r/n合计/r/n1154.75/r/n1.01/r/n0.84/r/n1171.3/r/n760.9/r/n1396.7/r/n2123.0/r/n乘同时系数〔0.75/0.80)/r/n1154.75/r/n0.76/r/n0.82/r/n878.5/r/n608.7/r/n1068.7/r/n1624.5/r/n2.2.3火灾时消防负荷低压配电干线负荷计算/r/n火灾时消防负荷低压配电干线负荷计算采用需要系数法计算，见表2-4。/r/n表2-4火灾时消防负荷低压配电干线负荷计算/r/n用电设备名称/r/n火灾时消防回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n消防控制中心/r/nW1/r/n10/r/n1/r/n0.8/r/n10.0/r/n7.5/r/n12.5/r/n19.0/r/n应急照明/r/nW3/r/n25/r/n1/r/n0.9/r/n25.0/r/n12.1/r/n27.8/r/n42.2/r/n应急照明/r/nW7/r/n10/r/n1/r/n0.9/r/n10.0/r/n4.8/r/n11.1/r/n16.9/r/n四层屋面正压风机/r/nW17/r/n22.5/r/n1/r/n0.8/r/n22.5/r/n16.9/r/n28.1/r/n42.8/r/n四层屋面正压风机/r/nW19/r/n30/r/n0.8/r/n0.8/r/n24.0/r/n18.0/r/n30.0/r/n45.6/r/n四层排烟风机/r/nW21/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n四层排烟风机/r/nW23/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n五层排烟风机/r/nW25/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n五层排烟风机/r/nW27/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n六层排烟风机/r/nW29/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n六层排烟风机/r/nW31/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n七层排烟风机/r/nW33/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n七层排烟风机/r/nW35/r/n7.5/r/n1/r/n0.8/r/n7.5/r/n5.6/r/n9.4/r/n14.3/r/n内廊排烟风机/r/nW37/r/n4/r/n1/r/n0.8/r/n4.0/r/n3.0/r/n5.0/r/n7.6/r/n屋面正压风机/r/nW39/r/n30/r/n0.8/r/n0.8/r/n24.0/r/n18.0/r/n30.0/r/n45.6/r/n内廊排烟风机/r/nW41/r/n8/r/n1/r/n0.8/r/n8.0/r/n6.0/r/n10.0/r/n15.2/r/n屋面正压风机/r/nW43/r/n30/r/n0.8/r/n0.8/r/n24.0/r/n18.0/r/n30.0/r/n45.6/r/n屋面正压风机/r/nW45/r/n22.5/r/n1/r/n0.8/r/n22.5/r/n16.9/r/n28.1/r/n42.8/r/n消防电梯/r/nW47/r/n30/r/n1/r/n0.7/r/n30.0/r/n30.6/r/n42.9/r/n65.1/r/n屋面稳压泵/r/nW51/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n消防电梯/r/nW53/r/n15/r/n1/r/n0.7/r/n15.0/r/n15.3/r/n21.4/r/n32.6/r/n公用变电所/r/nW67/r/n10/r/n0.8/r/n0.9/r/n8.0/r/n3.9/r/n8.9/r/n13.5/r/n地下室通风机/r/nW69/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室通风机/r/nW71/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室通风机/r/nW73/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室排烟风机/r/nW75/r/n22/r/n/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n地下室排烟风机/r/nW77/r/n11/r/n/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室排烟风机/r/nW79/r/n22/r/n/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n消火栓泵/r/nW86/r/n37/r/n1/r/n0.8/r/n37.0/r/n27.8/r/n46.3/r/n70.3/r/n喷淋泵/r/nW88/r/n110/r/n1/r/n0.8/r/n110.0/r/n82.5/r/n137.5/r/n209.0/r/n喷雾泵/r/nW90/r/n37/r/n1/r/n0.8/r/n37.0/r/n27.8/r/n46.3/r/n70.3/r/n合计/r/n572.4/r/n0.97/r/n0.80/r/n552.4/r/n415.0/r/n690.9/r/n1050.2/r/n乘同时系数〔0.95/0.98)/r/n572.4/r/n0.92/r/n0.79/r/n524.8/r/n406.7/r/n663.9/r/n1009.2/r/n2.2.4变电所负荷计算/r/n先计算变电所总计算负荷，以便选择变压器的台数与容量。变电所总计算负荷见表2-5。/r/n表2-5/r/n变电所负荷计算/r/n回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n照明回路/r/n1172.6/r/n0.72/r/n0.87/r/n841.8/r/n484.1/r/n971.1/r/n1476.0/r/n电力回路/r/n1154.8/r/n1.01/r/n0.84/r/n1171.3/r/n760.9/r/n1396.7/r/n2123.0/r/n0.0/r/n0.0/r/n0.0/r/n0.0/r/n合计/r/n2327.4/r/n0.86/r/n0.85/r/n2021.1/r/n1245.0/r/n2366.9/r/n3597.8/r/n乘同时系数〔0.75/0.80)/r/n2327.35/r/n0.65/r/n0.83/r/n1509.8/r/n996.0/r/n1808.7/r/n2749.3/r/n3供配电系统一次接线设计/r/n3.1负荷分级及供电电源/r/n本工程多为一级与二级负荷。一级负荷应设有两个电源供电，当一个电源发生故障时，另一个电源应不至于同时受到破坏。两个电源均能承当用户的全部一级负荷设备的供电。二级负荷的供电系统，宜由两回电源线路供电。三级负荷，对供电无特殊要求。/r/n平时一二级负荷见表3-1。/r/n表3-1平时一二级负荷计算/r/n平时一二级负荷回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n消防控制中心/r/nW1/r/n10/r/n1/r/n0.8/r/n10.0/r/n7.5/r/n12.5/r/n19.0/r/n应急照明/r/nW3/r/n25/r/n1/r/n0.9/r/n25.0/r/n12.1/r/n27.8/r/n42.2/r/n一层商店照明/r/nW5/r/n196/r/n0.7/r/n0.9/r/n137.2/r/n66.4/r/n152.4/r/n231.7/r/n应急照明/r/nW7/r/n10/r/n1/r/n0.9/r/n10.0/r/n4.8/r/n11.1/r/n16.9/r/n二层商店照明/r/nW9/r/n80/r/n0.8/r/n0.9/r/n64.0/r/n31.0/r/n71.1/r/n108.1/r/n三层商店照明/r/nW11/r/n80/r/n0.8/r/n0.9/r/n64.0/r/n31.0/r/n71.1/r/n108.1/r/n4~7层电力/r/nW15/r/n600/r/n0.7/r/n0.9/r/n420.0/r/n203.4/r/n466.7/r/n709.3/r/n消防电梯/r/nW47/r/n30/r/n1/r/n0.7/r/n30.0/r/n30.6/r/n42.9/r/n65.1/r/n屋面电梯/r/nW49/r/n30/r/n1/r/n0.8/r/n30.0/r/n22.5/r/n37.5/r/n57.0/r/n屋面稳压泵/r/nW51/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n消防电梯/r/nW53/r/n15/r/n1/r/n0.7/r/n15.0/r/n15.3/r/n21.4/r/n32.6/r/n地下室电力/r/nW55/r/n11.5/r/n0.8/r/n0.9/r/n9.2/r/n4.5/r/n10.2/r/n15.5/r/n地下室电力/r/nW57/r/n13.6/r/n0.8/r/n0.9/r/n10.9/r/n5.3/r/n12.1/r/n18.4/r/n锅炉房电力/r/nW59/r/n50.25/r/n0.8/r/n0.9/r/n40.2/r/n19.5/r/n44.7/r/n67.9/r/n空调机房水泵冷却塔/r/nW60/r/n303/r/n0.8/r/n0.8/r/n242.4/r/n181.8/r/n303.0/r/n460.6/r/n地下室车库照明/r/nW61/r/n6.3/r/n1/r/n0.9/r/n6.3/r/n3.1/r/n7.0/r/n10.6/r/n地下室车库照明/r/nW63/r/n6.4/r/n1/r/n0.9/r/n6.4/r/n3.1/r/n7.1/r/n10.8/r/n设备房照明/r/nW65/r/n3.9/r/n1/r/n0.85/r/n3.9/r/n2.4/r/n4.6/r/n7.0/r/n公用变电所/r/nW67/r/n10/r/n0.8/r/n0.9/r/n8.0/r/n3.9/r/n8.9/r/n13.5/r/n地下室通风机/r/nW69/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室通风机/r/nW71/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室通风机/r/nW73/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室排烟风机/r/nW75/r/n22/r/n/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n地下室排烟风机/r/nW77/r/n11/r/n/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室排烟风机/r/nW79/r/n22/r/n/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n生活泵/r/nW84/r/n17.2/r/n1/r/n0.8/r/n17.2/r/n12.9/r/n21.5/r/n32.7/r/n合计/r/n1087/r/n0.75/r/n0.88/r/n816.2/r/n433.0/r/n923.9/r/n1404.4/r/n乘同时系数〔0.80/0.85)/r/n1087/r/n0.60/r/n0.87/r/n653.0/r/n368.0/r/n749.5/r/n1139.3/r/n功率因数补偿/r/n-200/r/n功率因数补偿后/r/n1087/r/n0.60/r/n0.97/r/n653.0/r/n168.0/r/n674.2/r/n1024.8/r/n3.2电压选择与电能质量/r/n本工程低压配电电压为~220/380V,电源引自地下一层变配电室，变配电室电气参见当地有关部门施工图纸。/r/n低压配电柜进线采用YJV电力电缆埋地引入，埋深为室外地坪下-0.7m，穿钢管保护，同时做好防水处理。/r/n照明与电力配电回路分开。对于较大容量的电力设备采用专线供电。/r/n3.3电力变压器选择/r/n〔1〕变压器形式与台数/r/n/r/n本工程为一般高层建筑，变电所位于主体建筑地下一层内，故采用SGB10型三相双绕组干式变压器。变压器采用无励磁调压方式，电压比10/r/n±/r/n0.5%/0.4KV,联接组别为Dyn11，考虑到与开关柜布置在同一房间内，带IP2x防护外壳。/r/n因本工程有较多的一、二级负荷，故采用两台变压器。/r/n〔2〕变压器容量选择/r/n本工程乘同时系数后的总视在功率为1808.7kVA。/r/n选择两台变压器，每台变压器的容量为1250/r/nkVA/r/n，正常运行是为照明回路和电力回路。/r/n〔3〕变压器负荷分配计算及补偿/r/n变压器负荷分配计算及补偿见表3-2。/r/n表3-2变压器负荷分配计算及无功补偿/r/n回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n照明回路/r/n1172.6/r/n0.72/r/n0.87/r/n841.8/r/n484.1/r/n971.1/r/n1476.0/r/n电力回路/r/n1154.8/r/n1.01/r/n0.84/r/n1171.3/r/n760.9/r/n1396.7/r/n2123.0/r/n0.0/r/n0.0/r/n0.0/r/n0.0/r/n合计/r/n2327.4/r/n0.86/r/n0.85/r/n2021.1/r/n1245.0/r/n2366.9/r/n3597.8/r/n乘同时系数〔0.75/0.80)/r/n2327.35/r/n0.65/r/n0.83/r/n1509.8/r/n996.0/r/n1808.7/r/n2749.3/r/n功率因数补偿/r/n-600/r/n功率因数补偿后/r/n2327.35/r/n0.65/r/n0.97/r/n1509.8/r/n396.0/r/n1560.9/r/n2372.5/r/n变压器损耗/r/n15.6/r/n78.0/r/n高压侧负荷/r/n2327.35/r/n0.65/r/n0.95/r/n1525.4/r/n474.0/r/n1597.4/r/n92.2/r/n变压器选择2/r/n×/r/n1250KVA/r/n2500/r/n变压器负荷率/r/n62%/r/n变压器T1和T2的负荷分配与计算见表3-3、3-4。/r/n表3-3变压器T1负荷计算/r/n变压器T1回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n消防控制中心/r/nW1/r/n10/r/n1/r/n0.8/r/n10.0/r/n7.5/r/n12.5/r/n19.0/r/n一层商店照明/r/nW5/r/n196/r/n0.7/r/n0.9/r/n137.2/r/n66.4/r/n152.4/r/n231.7/r/n二层商店照明/r/nW9/r/n80/r/n0.8/r/n0.9/r/n64.0/r/n31.0/r/n71.1/r/n108.1/r/n三层商店照明/r/nW11/r/n80/r/n0.8/r/n0.9/r/n64.0/r/n31.0/r/n71.1/r/n108.1/r/n4~7层照明/r/nW13/r/n800/r/n0.7/r/n0.85/r/n560.0/r/n347.1/r/n658.8/r/n1001.4/r/n地下室电力/r/nW55/r/n11.5/r/n0.8/r/n0.9/r/n9.2/r/n4.5/r/n10.2/r/n15.5/r/n地下室电力/r/nW57/r/n13.6/r/n0.8/r/n0.9/r/n10.9/r/n5.3/r/n12.1/r/n18.4/r/n锅炉房电力/r/nW59/r/n50.25/r/n0.8/r/n0.9/r/n40.2/r/n19.5/r/n44.7/r/n67.9/r/n地下室车库照明/r/nW61/r/n6.3/r/n1/r/n0.9/r/n6.3/r/n3.1/r/n7.0/r/n10.6/r/n地下室车库照明/r/nW63/r/n6.4/r/n1/r/n0.9/r/n6.4/r/n3.1/r/n7.1/r/n10.8/r/n设备房照明/r/nW65/r/n3.9/r/n1/r/n0.85/r/n3.9/r/n2.4/r/n4.6/r/n7.0/r/n公用变电所/r/nW67/r/n10/r/n0.8/r/n0.9/r/n8.0/r/n3.9/r/n8.9/r/n13.5/r/n地下室通风机/r/nW69/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室通风机/r/nW71/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室通风机/r/nW73/r/n2.2/r/n1/r/n0.8/r/n2.2/r/n1.7/r/n2.8/r/n4.2/r/n地下室排烟风机/r/nW75/r/n22/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n地下室排烟风机/r/nW77/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n地下室排烟风机/r/nW79/r/n22/r/n1/r/n0.8/r/n22.0/r/n16.5/r/n27.5/r/n41.8/r/n合计/r/n1247.95/r/n0.79/r/n0.86/r/n990.5/r/n577.4/r/n1146.5/r/n1742.7/r/n乘同时系数〔0.75/0.80)/r/n1247.95/r/n0.60/r/n0.85/r/n742.9/r/n461.9/r/n874.8/r/n1329.7/r/n功率因数补偿/r/n-280/r/n功率因数补偿后/r/n1247.95/r/n0.60/r/n0.97/r/n742.9/r/n181.9/r/n764.8/r/n1162.5/r/n表3-4变压器T2负荷计算/r/n变压器T2回路名称/r/n额定容量/kW/r/n需要系数Kd/r/n功率因数cos/r/nφ/r/n有功功率/kW/r/n无功功率/kvar/r/n视在功率/kVA/r/n计算电流A/r/n4~7层电力/r/nW15/r/n600/r/n0.7/r/n0.9/r/n420.0/r/n203.4/r/n466.7/r/n709.3/r/n消防电梯/r/nW47/r/n30/r/n1/r/n0.7/r/n30.0/r/n30.6/r/n42.9/r/n65.1/r/n屋面电梯/r/nW49/r/n30/r/n1/r/n0.8/r/n30.0/r/n22.5/r/n37.5/r/n57.0/r/n屋面稳压泵/r/nW51/r/n11/r/n1/r/n0.8/r/n11.0/r/n8.3/r/n13.8/r/n20.9/r/n消防电梯/r/nW53/r/n15/r/n1/r/n0.7/r/n15.0/r/n15.3/r/n21.4/r/n32.6/r/n空调机房水泵冷却塔/r/nW60/r/n303/r/n0.8/r/n0.8/r/n242.4/r/n181.8/r/n303.0/r/n460.6/r/n制冷机组/r/nW81/r/n257/r/n1/r/n0.8/r/n257.0/r/n192.8/r/n321.3/r/n488.3/r/n生活泵/r/nW84/r/n17.2/r/n1/r/n0.8/r/n17.2/r/n12.9/r/n21.5/r/n32.7/r/n合计/r/n6345.4/r/n0.16/r/n0.84/r/n1022.6/r/n667.5/r/n1221.2/r/n1856.2/r/n乘同时系数〔0.75/0.80)/r/n6345.4/r/n0.12/r/n0.82/r/n767.0/r/n534.0/r/n934.6/r/n1420.5/r/n功率因数补偿/r/n-350/r/n功率因数补偿后/r/n6345.4/r/n0.12/r/n0.97/r/n767.0/r/n184.0/r/n788.7/r/n1198.9/r/n3.4变电所电气主接线设计/r/n3.4.1变电所高压侧电气主接线设计/r/n采用分段单母线形式，由10KV电源A和电源B同时供电，母线联络断路器断开，两个电源各承当一半负荷。当电源B故障或检修时，闭合母联断路器，由电源A承当全部负荷；当电源A故障或检修时，母联断路器仍断开，由电源B承当一半负荷。/r/n见图纸目录变电所高压侧电气主接线图，图号电01，共1张。/r/n3.4.2变电所低压侧电气主接线设计/r/n正常运行时，两台变压器同时运行，母联断路器断开，两台变压器分列运行，各承当一半负荷。当任一台变压器故障或检修时，切除局部三级负荷后，闭合母联断路器，由另一台变压器承当全部一、二级负荷及局部三级负荷。/r/n见图纸目录变电所低压侧电气主接线图，图号电02，共8张。/r/n4变电所布置设计/r/n4.1总体布置/r/n本工程变电所为单层布置，虽含有两个变电所，但超市变电所不再所考虑范围内。由于变压器为干式并带有IP2x防护外壳，所以可将上下压开关柜设置与一个房间内，即地下变配电室。由于低压开关柜数量较多，故采用双列面对面布置方式。本工程变电所电气设备布置平面图如图纸目录电03所示，途中按比例绘制变压器、开关柜、直流及交流信号屏等平面布置尺寸。高压开关柜、低压开关柜及变压器的相对位置是基于电缆进出线方便的考虑，满足规定的尺寸大小。由于干式变压器防护外壳只有IP2x，未与低压开关柜贴邻安装，两者低压母线之间采用架空封闭母线连接。双列布置的低压开关柜母线之间也采用架空封闭母线连接。/r/n4.2配电装置通道与平安净距/r/n本工程高压开关柜的柜后维护通道最小处为800mm、柜前操作通道为2000mm、低压开关柜的柜后维护通道最小为1200mm、柜前操作通道为2400mm、干式变压器外廊与门的净距为1000mm、与侧墙的净距为800mm、干式变压器正面之间的距离为2400mm。以上配电装置通道与平安净距均满足标准要求。/r/n5/r/n短路电流计算与/r/n上下压电器选择/r/n5.1变电所高压侧短路电流计算/r/n高压三相短路电流与短路容量的计算公式：/r/nI/r/nk3"/r/n=/r/nX/r/n*/r/nI/r/nd/r/nI/r/nb/r/n/r/n=/r/nI/r/nk33/r/nI/r/nk3"/r/ni/r/np3/r/n=/r/nK/r/np/r/nI/r/nk3"/r/nS/r/nk3"/r/n=/r/ncU/r/nn/r/nI/r/nk3"/r/n上面对应的是变电所高压侧短路电流计算电路公式，高压侧短路计算见表5-1。/r/n表5-1高压侧短路计算/r/n基准值/r/n/r/nS/r/nd=100MVA/r/n，/r/nU/r/nc1=10.5kV/r/n，/r/nI/r/nd1=5.5kA/r/n序号/r/n元件/r/n短路点/r/n运行参数/r/nX/r/n*/r/nI/r/nk3"/kA/r/nI/r/nb3/kA/r/nI/r/nk3/kA/r/ni/r/np3/kA/r/nS/r/nk3"/MVA/r/nI/r/nk2/kA/r/n1/r/nSA/r/n/r/nmax/r/n0.275/r/n20.0/r/n20.0/r/n20.0/r/n51.0/r/n363.7/r/n17.3/r/n/r/nmin/r/n0.344/r/n16.0/r/n16.0/r/n16.0/r/n40.8/r/n291.0/r/n13.9/r/n2/r/nWHA/r/n/r/nx/r/n/Ω/km/r/nl//r/nkm/r/n/r/n/r/n/r/n/r/n/r/n/r/n/r/n/r/n0.095/r/n2.5/r/n0.215/r/n/r/n/r/n/r/n/r/n/r/n/r/n3/r/n1＋2/r/nk-1/r/nmax/r/n0.490/r/n11.2/r/n11.2/r/n11.2/r/n28.6/r/n204.0/r/n9.7/r/nmin/r/n0.559/r/n9.8/r/n9.8/r/n9.8/r/n25.1/r/n178.9/r/n8.5/r/n5.2低压电网短路电流计算/r/n5.2.1变压器低压侧短路电流计算/r/n计算有关电路元件的阻抗/r/n=1\*GB2/r/n⑴/r/n高压系统电抗〔归算到400V侧〕/r/n每相阻抗:/r/nZ/r/ns/r/n=Uc/r/n2/r/nx10/r/n-3/r/n/Sk=(400V)/r/n2/r/nx10/r/n-3/r/n/204.0MV/r/n·/r/nA=0.784M/r/nΩ/r/nX/r/ns/r/n=0.995Z/r/ns/r/n=0.995x0.784M/r/nΩ/r/n=0.780M/r/nΩ/r/n相零阻抗:/r/nX/r/nL-PE/r/n=2X/r/ns/r/n/3=0.520M/r/nΩ/r/nR/r/nL-PE/r/n=2R/r/ns/r/n/3=0.052M/r/nΩ/r/n/r/n=2\*GB2/r/n/r/n⑵/r/n变压器的阻抗〔由附录表查得SCB10-1250/10变压器Dyn11联接，/r/n△/r/nPk/r/n=11KW/r/nU/r/nk/r/n％=6/r/n每相阻抗:/r/nR/r/nT/r/n=/r/n△/r/nP/r/nk/r/nU/r/nC/r/n2/r/n//r/nS/r/nNT/r/n2/r/n=11KWx(400V)/r/n2/r/n/(1250KV/r/n·/r/nA)/r/n2/r/n=1.126M/r/nΩ/r/nZ/r/nT/r/n=/r/nU/r/nk/r/n％/r/nU/r/nC/r/n2/r/n/100/r/nS/r/nNT/r/n=6x/r/n/r/n(400V)/r/n2/r/n/100x1250KV/r/n·/r/nA=7.680M/r/nΩ/r/nX/r/nT/r/n=/r/n=7.597M/r/nΩ/r/n相零阻抗：/r/nR/r/nL-PE/r/n=R/r/nT/r/n=1.126M/r/nΩ/r/nX/r/nL-PE/r/n=X/r/nT/r/n=7.597M/r/nΩ/r/n/r/n=3\*GB2/r/n/r/n⑶/r/n母线和电缆的阻抗/r/n每相阻抗/r/n:/r/n/r/nR/r/nwb/r/n=/r/nR/r/n*L=0.013x4=0.052M/r/nΩ/r/nX/r/nwb/r/n=/r/nX/r/n*L=0.118x4=0.472M/r/nΩ/r/n相零阻抗/r/n:/r/nR/r/nL-PE/r/n=r/r/nL-PE/r/nL=0.039x4=0.156M/r/nΩ/r/nX/r/nL-PE/r/n=x/r/nL-PE/r/nL=0.264x4=1.056M/r/nΩ/r/n计算K-5点的三相和单相短路电流/r/n三相短路回路总阻抗：/r/nR/r/n∑/r/n=/r/nR/r/ns/r/n+/r/nR/r/nT/r/n+/r/nR/r/nWB/r/n=0.078+1.126+0.052=1.256M/r/nΩ/r/nX/r/n∑/r/n=/r/n/r/nX/r/ns/r/n+/r/n/r/nX/r/nT/r/n+/r/n/r/nX/r/nWB/r/n=0.780+7.597+0.472=8.849M/r/nΩ/r/n三相短路电流:/r/nI/r/n〔3〕/r/nk/r/n=Uc//r/nR/r/n∑/r/n2/r/n+X/r/n∑/r/n2/r/n=25.84KA/r/n短路电流冲击系数:/r/nK/r/np/r/n=1+e(-/r/n∏/r/nR/r/n∑/r/n/X/r/n∑/r/n)/r/n2/r/n=1.640/r/n三相短路冲击电流：/r/ni/r/n〔3〕/r/np3/r/n=/r/nKpI/r/n〔3〕/r/nK/r/n=/r/n*1.640*25.84=59.92KA/r/n单相短路回路总相零阻抗：/r/nR=0.052+1.126+0.156=1.334M/r/nΩ/r/nX=0.520+7.597+1.056=9.173M/r/nΩ/r/n两相短路电流：/r/nI/r/n〔2〕/r/nk/r/n2/r/n=0.866xI/r/n〔2〕/r/nk/r/n=0.866x25.84=22.38KA/r/n单相短路电流：/r/nI/r/n〔1〕/r/nk/r/n=U//r/nR/r/n2/r/n+X/r/n2/r/n=24.91KA/r/n计算K-7点的三相和单相短路电流/r/n每相阻抗:/r/n/r/nR/r/nwb/r/n=/r/nR/r/n*L=0.013x11.2=0.146M/r/nΩ/r/nX/r/nwb/r/n=/r/nX/r/n*L=0.118x11.2=1.322M/r/nΩ/r/n相零阻抗:/r/nR/r/nL-PE/r/n=r/r/nL-PE/r/nL=0.039x11.2=0.437M/r/nΩ/r/n/r/nX/r/nL-PE/r/n=x/r/nL-PE/r/nL=0.264x11.2=2.957M/r/nΩ/r/n三相短路回路总阻抗：/r/nR/r/n∑/r/n=/r/n/r/n1.256+0.146=1.402M/r/nΩ/r/nX/r/n∑/r/n=/r/n/r/n8.849+7.597+1.322=10.171M/r/nΩ/r/n三相短路电流:/r/nI/r/n〔3〕/r/nk/r/n=Uc//r/nR/r/n∑/r/n2/r/n+X/r/n∑/r/n2/r/n=22.49KA/r/n短路电流冲击系数:/r/nK/r/np/r/n=1+e(-/r/n∏/r/nR/r/n∑/r/n/X/r/n∑/r/n)/r/n2/r/n=1.649/r/n三相短路冲击电流：/r/ni/r/n〔3〕/r/np3/r/n=/r/nKpI/r/n〔3〕/r/nK/r/n=/r/n*1.649*22.49=52.43KA/r/n单相短路回路总相零阻抗：/r/nR=1.334+0.437=1.771M/r/nΩ/r/nX=9.173+2.957=12.130M/r/nΩ/r/n两相短路电流：/r/nI/r/n〔2〕/r/nk/r/n2/r/n=0.866xI/r/n〔2〕/r/nk/r/n=0.866x22.49=19.48KA/r/n单相短路电流：/r/nI/r/n〔1〕/r/nk/r/n=U//r/nR/r/n2/r/n+X/r/n2/r/n=18.84KA/r/n变压器低压侧短路计算见表5-2。/r/n表5-2变压器低压短路计算/r/n变压器T1低压侧短路计算/r/nU/r/nn=380V/r/n序号/r/n元件/r/n短路点/r/n运行参数/r/nR/r/n/mΩ/r/nX/r/n/mΩ/r/nZ//r/nmΩ/r/nR/r/nL-PE/mΩ/r/nX/r/nL-PE/r/n//r/nmΩ/r/nZ/r/nL-PE/r/n//r/nmΩ/r/nI/r/nk3"/kA/r/nk/r/np/r/ni/r/np3/kA/r/nI/r/nk2/kA/r/nI/r/nk1E/kA/r/n1/r/nSA/r/nk-1/r/nS/r/nkmax/r/n/MVA/r/n204.00/r/n0.078/r/n0.780/r/n0.784/r/n0.052/r/n0.520/r/n2/r/nT1/r/nS/r/nrT/r/n/kVA/r/n△/r/nP/r/nk/r/n/kW/r/nU/r/nk/r/n％/r/n1250/r/n11/r/n6/r/n1.126/r/n7.597/r/n7.680/r/n1.126/r/n7.597/r/n3/r/n1/r/n＋/r/n2/r/nk-3/r/n1.204/r/n8.377/r/n8.463/r/n1.178/r/n8.117/r/n8.202/r/n27.29/r/n1.637/r/n63.15/r/n23.63/r/n28.16/r/n4/r/nT1WB1/r/nr/mΩ/m/r/nx/r/n/mΩ/m/r/nl//r/nm/r/n0.013/r/n0.118/r/n4/r/n0.052/r/n0.472/r/nr/r/nL-PE/r/n/mΩ/r/n/m/r/nx/r/nL-PE/r/n/mΩ/m/r/nl//r/nm/r/n0.039/r/n0.264/r/n4/r/n0.156/r/n1.056/r/n5/r/n3/r/n＋/r/n4/r/nk-5/r/n1.256/r/n8.849/r/n8.938/r/n1.334/r/n9.173/r/n9.270/r/n25.84/r/n1.640/r/n59.92/r/n22.38/r/n24.91/r/n6/r/nT1WB2/r/nr/mΩ/m/r/nx/r/n/mΩ/m/r/nl//r/nm/r/n0.013/r/n0.118/r/n11.2/r/n0.146/r/n1.322/r/nr/r/nL-PE/r/n/mΩ/r/n/m/r/nx/r/nL-PE/r/n/mΩ/m/r/nl//r/nm/r/n0.039/r/n0.264/r/n11.2/r/n0.437/r/n2.957/r/n7/r/n5+6/r/nk-7/r/n1.402/r/n10.171/r/n10.267/r/n1.771/r/n12.130/r/n12.259/r/n22.49/r/n1.649/r/n52.43/r/n19.48/r/n18.84/r/n5.2.2低压配电线路短路电流计算/r/n共对四组配电干线进行了低压短路计算，分别是2层商店照明〔W9〕、4~7层照明〔W13〕、五层排烟风机〔W25〕、喷淋泵〔W88〕。短路计算见表5-3~表5-6。/r/n表5-3配电干线/r/nW9〔AA4柜配出〕低压短路计算/r/n变压器T1低压侧配电干线W9〔AA4柜配出〕短路计算/r/nU/r/nn=380V/r/n序号/r/n元件/r/n短路点/r/n运行参数/r/nR/r/n/mΩ/r/nX/r/n/mΩ/r/nZ//r/nmΩ/r/nR/r/nL-PE/mΩ/r/nX/r/nL-PE/r/n//r/nmΩ/r/nZ/r/nL-PE/r/n//r/nmΩ/r/nI/r/nk3"/kA/r/nk/r/np/r/ni/r/np3/kA/r/nI/r/nk2/kA/r/nI/r/nk1E/kA/r/n1/r/nSA/r/nk-1/r/nS/r/nkmax/r/n/MVA/r/n204.00/r/n0.078/r/n0.780/r/n0.784/r/n0.052/r/n0.520/r/n2/r/nT1/r/nS/r/nrT/r/n/kVA/r/n△/r/nP/r/nk/r/n/kW/r/nU/r/nk/r/n％/r/n1250/r/n11/r/n6/r/n1.126/r/n7.597/r/n7.680/r/n1.126/r/n7.597/r/n3/r/nT1WB1/r/nr/mΩ/m/r/nx/r/n/mΩ/m/r/nl//r/nm/r/n0.013/r/n0.118/r/n9.6/r/n0./r/n125/r/n1.133/r/nr/r/nL-PE/r/n/mΩ/r/n/m/r/nx/r/nL-PE/r/n/mΩ/m/r/nl//r/nm/r/n0.039/r/n0.264/r/n9.6/r/n0./r/n374/r/n2.534/r/n4/r/n1+2+3/r/nAA4/r/n1./r/n329/r/n9.510/r/n9.603/r/n1.553/r/n10.653/r/n10.764/r/n2/r/n4.05/r/n1.64/r/n5/r/n5/r/n5.93/r/n20.83/r/n21.46/r/n5/r/nW9/r/nr/mΩ/m/r/nx/r/n/mΩ/m/r/nl//r/nm/r/n0./r/n31/r/n0./r/n078/r/n30.8/r/n0./r/n650/r/n5.900/r/nr/r/nL-PE/r/n/mΩ/r/n/m/r/nx/r/nL-PE/r/n/mΩ/m/r/nl//r/nm/r/n1.128/r/n0./r/n191/r/n30.8/r/n34.742/r/n5.883/r/n6/r/n4+5/r/n2AL1/r/n10.877/r/n11.913/r/n16.131/r/n36.295/r/n16.534/r/n39.884/r/n14.32/r/n1./r/n057/r/n21.39/r/n12.40/r/n5.79/r/n表5-4配电干线/r/nW13〔AA2柜配出〕低压短路计算/r/n变压器T1低压侧配电干线W13〔AA2柜配出〕短路计算/r/nU/r/nn=380V/r/n序号/r/n元件/r/n短路点/r/n运行参数/r/nR/r/n/mΩ/r/nX/r/n/mΩ/r/nZ//r/nmΩ/r/nR/r/nL-PE/mΩ/r/nX/r/nL-PE/r/n//r/nmΩ/r/nZ/r/nL-PE/r/n//r/nmΩ/r/nI/r/nk3"/kA/r/nk/r/np/r/ni/r/np3/kA/r/nI/r/nk2/kA/r/nI/r/nk1E/kA/r/n1/r/nSA/r/nk-1/r/nS/r/nkmax/r/n/MVA/r/n204.00/r/n0.078/r/n0.780/r/n0.784/r/n0.052/r/n0.520/r/n2/r/nT1/r/nS/r/nrT/r/n/kVA/r/n△/r/nP/r/nk/r/n/kW/r/nU/r/nk/r/n％/r/n1250/r/n11/r/n6/r/n1.126/r/n7.597/r/n7.680/r/n1.126/r/n7.597/r/n3/r/nT1WB1/r/nr/mΩ/m/r/nx/r/n/mΩ/m/r/nl//r/nm/r/n0.013/r/n0.118/r/n8.8/r/n0./r/n114/r/n1.038/r/nr/r/nL-PE/r/n/mΩ/r/n/m/r/nx/r/nL-PE/r/n/mΩ/m/r/nl//r/nm/r/n0.039/r/n0.264/r/n8.8/r/n0./r/n343/r/n2.323/r/n4/r/n1+2+3/r/nAA11/r/n1./r/n319/r/n9.416/r/n9.508/r/n1.522/r/n10.440/r/n10.551/r/n2/r/n4.29/r/n1.64/r/n4/r/n5/r/n6.47/r/n21.04/r/n21.89/r/n5/r/nW13/r/nr/mΩ/m/r/nx/r/n/mΩ/m/r/nl//r/nm/r/n0.013/r/n0.118/r/n50/r/n0./r/n650/r/n5.900/r/nr/r/nL-PE/r/n/mΩ/r/n/m/r/nx/r/nL-PE/r/n/mΩ/m/r/nl//r/nm/r/n0.039/r/n0.264/r/n50/r/n1.950/r/n13.20/r/n6/r/n4+5/r/n7AL/r/n1./r/n969/r/n15.316/r/