直流系统负荷负荷计算

序号负荷名称负荷 容量 (kW)负荷 系数负荷 电流 (A)经常电流(A)事故放电时间初期持1min00.50.5 1.01主控楼经常负荷2.531.011.511.511.511.511.521000kV#1小室经常负荷7.01.031.8231.8231.8231.8231.8231000kV#2小室经常负荷4.751.021.5921.5921.5921.5921.594500kV#1小室经常负荷3.491.015.8615.8615.8615.8615.865500kV#2小室经常负荷4.011.018.2318.2318.2318.2318.236主变及110kV小室经常负荷5.731.026.0526.0526.0526.0526.057UPS电源装置150.640.9140.9140.9140.918事故照明逆变电源81.036.3636.3636.3636.369控制保护事故负荷7.650.620.8620.8610断路器集中跳闸12.920.635.2435.2411断路器合闸1.0512电流统计(A)IjcI1I2I3125.05258.42202.32202.321) 第一阶段计算容量C =K 厶C1 k Kt=1Cm1inK =0.94I= 258.42AC11 C =1.4X258.42/0.94=384.9(Ah)C12)第二阶段计算容量C=K厶+ 1(I-I)C2 k KK21t =30mC1in C 2K=0.66I=258.42 A1C11t=29minK=0.67I= 202.32A2C22 C =1.4C2258.42/0.66+(202.32-258.42)/0.67=430.9(Ah)3) 第三阶段计算容量C =K 厶 + 1C3 kKKt=60min1(IT)+ 1 (I-I)21K32K =C03. 45I=258.42 AC11t=59min2K=0.46C2I=202.32A2t=30min3K=0.66C3I=202.32A3 C =1.4C3X258.42/0.45+(202.32-258.42)/0.46=633.2(Ah)4) 第四阶段计算容量C =K 厶 + 1 (I -I )+ 1(I-I)+ 1(I-I)C4 k K K 2 1K32 K43t =90mC1in C 2C3K=0.37 C 4I=258.42 A1C11t=89minK=0.376I=202.32A2C22t=(90-30)minK=0.45I=202.32A3C33t=(90-60)minK=0.66=202.32A4C4I4 C =1.4C4X258.42/0.37+(202.32-258.42)/0.376=768.9(Ah) 5) 第五阶段计算容量C =K I + 1)+1c(i-iK K54K 54t =120min1(I -I )+ 1 (I I )+ 121 瓦 32 K-C3C4(I-I43K =0.29C1I =258.42A1K =0.29C2K =0.37C3K =0.45C4K =0.66C5I =202.32A2I =202.32A3=202.32A14=202.32A15t =119min2t =(120-30)min3t =(120-60)min4t =(120-90)min5C =1.4*258.42/0.29+(202.32-258.42)/0.29= C5976.7(Ah)6) 随机负荷K =1.00CRC=5/1.00=5(Ah)RC 叠加在 C 、 C 、C 、 C 上，与 C 比较，取最大值，故蓄电池 RC2 C3 C4 C5C1容量为：C =C +C=981.7(Ah)10 C5 R