1 新富煤矿井上下各变电所短路容量计算 2 0 1 2 年 3 月 2 目 录 1.一井短路容量计算: .................................................................................................... 2 2.二井短路容量计算: .................................................................................................... 5 3.三井短路容量计算: .................................................................................................... 8 4.五井短路容量计算: ................................................................................................... 1 1 5.六井短路容量计算: ...................................................................................................1 4 6.七井短路容量计算: ...................................................................................................1 7 7.八井短路容量计算: ...................................................................................................1 9 8.九井短路容量计算: ...................................................................................................2 2 9.十四井短路容量计算: ................................................................................................2 5 10.十六井短路容量计算: ..............................................................................................2 8 1.一井短路容量计算: 3 已知新富变变电所6.3KV母线最大及最小运行方式短路容量分别为Sd=153MVA、Sd=105.84MVA,线路2216电源电缆型号为LGJ-3*70长度为1019米,每公里电阻为0.516Ω,每公里电抗为0.061Ω,GJ-3*50长度为697米,每公里电阻为0.65Ω,每公里电抗为0Ω; (1)线路2216最大运行方式短路容量计算: 电源短路容量Sd=118MVA 电源系统电抗:Xs=Up2/Ss=6.32/153=0.3364Ω) 电缆电阻:Rg= ∑( RiLi / 1000 ) =0.516×1019/1000+ 0.65×697/1000 =0.967(Ω) 电缆电抗:Xg = ∑(XiLi / 1000) =0.061×1019/1000 =0.062(Ω) 总 电 阻:22gsgXXRZ 220 6 2.03 3 6 4.09 7 8 8.0 =1.046(Ω) 三相短路电流 AZUIPd3 4 7 70 4 6.136 3 ...