1、阻抗计算:L(KM)计算值1。系统阻抗标幺值:最大最小短路容量(MVA)2283.10 1428.5700短路标幺值X*=Sj/Sdx0.040.07002。线路:每KM估算值X*电缆(6KV)0.1760 Xl*=X*L*Sj/U/U=电缆(10KV)0.0730 Xl*=X*L*Sj/U/U=0.700.0256双电缆架空(6KV)0.8820 Xl*=X*L*Sj/U/U=架空(10KV)0.3170 Xl*=X*L*Sj/U/U=架空(35KV)0.0290 Xl*=X*L*Sj/U/U=架空(110KV)0.0030 Xl*=X*L*Sj/U/U=3。线路:柜出线电缆电缆(6KV)0
2、.1760 Xl*=X*L*Sj/U/U=电缆(10KV)0.0730 Xl*=X*L*Sj/U/U=0.050.0037双电缆4。变压器:容量电压等级阻抗电压阻抗标幺值KVAKV%Xb*变压器:50000.00110/6.310.50Xb*=Xd%/Se=0.2100变压器:40000.00110/6.310.500.2625变压器:31500.00110/6.310.500.3333变压器:25000.00110/6.310.500.4200变压器:16000.00110/6.310.500.6563变压器:12000.00110/6.310.500.8750变压器:10000.00110
3、/6.310.501.0500变压器:7200.00110/6.310.501.4583变压器:5100.00110/6.310.502.0588变压器:2700.00110/6.310.503.8889变压器:2500.00110/6.310.504.2000变压器:1600.0010(6)/0.44.502.8125变压器:1250.0010(6)/0.44.503.6000变压器:1000.0010(6)/0.44.504.5000变压器:800.0010(6)/0.44.505.6250变压器:750 10(6)/0.44.506.0000变压器:630 10(6)/0.44.507.
4、1429变压器:500 10(6)/0.44.509.0000变压器:240 10(6)/0.44.5018.7500变压器:30 10(6)/0.44.50150.0000电容电流(A)电缆线路Ie=0.1UeL55.2500架空线路Ie=UeL/350一、系统参数图:二、短路参数图:三、短路参数计算:短路点系统K1,1K2,3K4K5K6,7K8K9系统电压KV110.0010.5010.5010.5010.5010.5010.5010.50最大阻抗Xmax*0.040.370.070.112.873.670.08150.07最小阻抗Xmin*0.070.400.100.142.903.7
5、00.11150.10短路电流ImaxKA209.2324.58124.1880.533.192.49109.360.06短路电流IminKA130.9222.9791.6465.463.162.4883.310.06冲击电流ichKA533.5362.68316.65205.358.136.36278.860.16冲击电流IchKA315.9337.12187.51121.604.823.77165.130.09短路容量SdMVA2283.11268.241355.01878.7334.8027.221193.320.67四、保护定值表:高压柜名称单位 符号进线柜风机柜1变压器柜 2变压器柜
6、 3变压器柜 电容柜母联柜设备数量2.003.002.002.001.002.001.00设备容量KW8874.003200.001600.001250.0030.001500.005000.00额定电压KV10.5010.5010.5010.5010.5010.5010.50计算电流A487.96219.9587.9868.731.6582.48274.94互感器变比200.0080.0030.0030.0030.00200.00最大运行方式短路电流 A最小运行方式短路电流 A过流保护一段电流AI1zd18.7110.31136.94107.336.8718.71过流保护一段时限STI10.000.000.000.000.000.00过流保护二段电流AI2zd16.103.4412.719.934.7716.10过流保护二段时限STI20.1530.000.500.500.500.15过流保护三段电流AI3zd12.719.93退出过流保护三段时限STI30.500.50过负荷动作电流AIload3.663.023.582.802.06过负荷动作时限STload发信25.000.00
copyright@ 2010-2024 安全人之家版权所有
经营许可证编号:冀ICP备2022015913号-6