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1、、主运带巷机电硐室移动变电站的整定计算(一)、移动变电站高压馈电开关的过载保护整定负荷统计：LPn=340KW、长时工作电流：lea二KdeZPn/(乙VnCOSOwm)=0.54*340心.732*6.3*0.85)=19.8A确定整定值Ise=1.2*Ica.=1.2*19.823.8A、短路保护整定由过载保护确定短路保护整定值Isb.r=(1.21.4)*(lst.m+Dn)=1.4(22+19)=41A、灵敏度的校验a系统电抗值Xsy=V2ar/Ss=0.692/800=0.000595QbUGSP3*501460m电缆的电阻&和电阻&R1=Ro1LK2sc=0.1*1.46/(6/0
2、.69)2=0.002QX1=Xo1*LK2sc=0.06*1.46/(6/.69)2=0.001Qc变压器的电阻和电抗值Zt=VsV2ar.T/(100Sn.t)=4.43*0.692心00*0.63)=0.0334QRt=pN.TV2ar.T/S2N.T=4000X0.692/8002=0.005QXt=vZt2-R2t=W.03342-0.0052=0.0331QPn.t:变压器功率损耗，4000WVs(%):变压器的阻抗电压百分数，4.43(%)dUPQ-1.143*701400m电缆的电阻R3和电阻X3R2二Ro3L3=O.267*1.4=O.3738QX2=Xo3*L3=O.O78
3、*1.4=O.1O92QeUP-.143*1610m电缆的电阻Rs和电阻X3Rs=Ro3L=1.16*O.O1=O.O116QX3=X3*L=0.090*0.01=0.0009Q最远点电机机的三相短路电流I(3)d=Var/(v3*VE2+2X2)=690/(1.732*v0.39932+0.13472)=945A两相短路电流I(2)d=0.87*Id(3)=0.87*945=822Af灵敏度校验Kr=I(2)d/lsb=822/41=201.2符合要求(二)、移动变电站低压馈电开关的过载保护整定、长时工作电流：lea二KdeZPn/(V3VnCOSwm)=0.54*340/(1.732*0.
4、69*0.85)=180A确定整定值Ise=1.2*Ica.=1.2*106216A、短路保护整定由过载保护确定短路保护整定值Isb.r=(1.21.4)*(lSt.m+Dn)=1.2*(169+160)=329A、灵敏度的校验a系统电抗值Xsy=V2ar/Ss=0.692/800=0.000595QbUGSP3*501460m电缆的电阻Ri和电阻XiRi二RoiLi/K2sc=0.1*1.46/(6/0.69)2=0.002QXi=Xoi*Li/K2sc=0.06*i.46/(6/.69)2=0.00iQc变压器的电阻和电抗值Zt=VsV2ar.T/(i00Sn.t)=4.43*0.692心
5、00*0.63)=0.0334QRt=pN.TV2ar.T/S2N.T=4000X0.692/8002=0.005QXt=vZt2-R2t=W.03342-0.0052=0.033iQPn.t:变压器功率损耗，4000WVs(%):变压器的阻抗电压百分数，4.43(%)dUPQ-.i43*70i400m电缆的电阻Rs和电阻X3R2二Ro3L3=0.267*i.4=0.3738QX2=X3*L3=0.078*i.4=0.i092QeUP-.i43*i6i0m电缆的电阻Ra和电阻XaR3二Ro3L3=i.i6*0.0i=0.0ii6QX3=X3*L3=0.090*0.0i=0.0009Q最远点电机
6、机的三相短路电流I(3)d=Var/(v3*VE2+2X2)=690/(1.732*v0.39932+0.13472)=945A两相短路电流I(2)d=0.87*Id(3)=0.87*945=822Af灵敏度校验Kr=I(2)d/Isb=822/329=2.51.2符合要求二、主运带移变馈电、开关整定计算1、控制主运皮带机的KJ25-400馈电整定计算短路保护整定IsbNst.m+Un=5*185+330=515A(1) 灵敏度校验aXsy=V2ar/Ss=0.692/800=0.000595QbUGSP3*9560m电缆的电阻&和电阻人R1二R01L1/K2sc=0.1*0.046/(6/0
7、.69)2=0.002QX1=Xo1*LK2sc=0.06*0.046/(6/.69)2=0.001Qc变压器的电阻和电抗值Zt=VsV2ar.T/(100Sn.t)=4.43*0.692心00*0.63)=0.0334QRt=pN.TV2ar.T/S2N.T=4000X0.692/8002=0.005QXt=vZt2-R2t=v0.03342-0.0052=0.0331QPn.t：变压器功率损耗，4000Wvs(%):变压器的阻抗电压百分数，4.43(%)dUPQ-.143*701400m电缆的电阻Rs和电阻X3R2二R2L2=0.267*1.4=0.3738QX2=Xo2*L2=O.O78
8、*1.4=O.1O92QeUP-.143*1610m电缆的电阻R3和电阻X3R3=Ro3L3=1.16*O.O1=O.O116QX3=Xo3*L3=O.O9O*O.O1=O.OOO9Q最远点电机机的三相短路电流I(3)d=Var/(v3*VE2+2X2)=690/(1.732*v0.39932+0.13472)=945A两相短路电流I(2)d=0.87*Id(3)=0.87*945=822Af灵敏度校验Kr=I(2)d/Isb=822/254=3.21.2符合要求2、控制中间巷DW80-200馈电整定计算(1)、短路保护整定IsbNst.m+Hn=5*41.72+75=284A(2)、灵敏度校
9、验aXsy=V2ar/Ss=0.692/800=0.000595QbUGSP3*501460m电缆的电阻R1和电阻人R1=Ro1L1/K2sc=0.1*1.46/(6/0.69)2=0.002QXi=Xoi*Li/K2sc=0.06*1.46/(6/.69)2=0.001Qc变压器的电阻和电抗值Zt=VsV2ar.T/(100Sn.t)=4.43*0.692心00*0.63)=0.0334QRt=pN.TV2ar.T/S2N.T=4000X0.692/8002=0.005QXT=vZt2-R2t=W.03342-0.0052=0.0331QPn.t:变压器功率损耗，4000WVs(%):变压器
10、的阻抗电压百分数，4.43(%)dUPQ-.143*701000m电缆的电阻R3和电阻X3R2二Ro2L2=0.267*1.0=0.267QX2=X2*L2=0.078*1.0=0.078QeUP-.143*1610m电缆的电阻Rs和电阻X3Rs二Ro3L3=1.16*0.01=0.0116QXs=Xo3*Ls=0.090*0.01=0.0009Q最远点电机机的三相短路电流I(3)d=Var/(v3*VE2+2X2)=690/(1.732*v0.28562+0.11422)=1295A两相短路电流I(2)d=0.87*Id(3)=0.87*1295=1127Af灵敏度校验Kr=I(2)d/Is
11、b=1127/284=3.971.2符合要求3、主运带巷机电硐室QBZ-80开关整定计算1) 过载保护整定由拉紧电机额定电流In=8.7A，确定整定值为lse=9A短路保护整定选整定值为lsb。r=4lse=4X9=36A校验短路保护的灵敏度a系统电抗值Xsy=V2ar/Ss=0.692/800=0.000595QbUGSP3*501460m电缆的电阻R1和电阻人R1=RdL1/K2sc=0.1*1.46/(6/0.69)2=0.0019QX1=Xo1*L/K2sc=0.06*1.46/(6/.69)2=0.00116Qc变压器的电阻和电抗值Zt=VsV2ar.T/(100Sn.t)=4.43
12、*0.692心00*0.63)=0.0334Rt=pN.TV2ar.T/S2N.T=4000X0.692/8002=0.005QXt=vZt2-R2t=v0.03342-0.0052=0.0331QdUPQ-.143*70200m电缆的电阻R3和电阻X3R2=Ro2L2=0.267*0.2=0.0534QX2=Xo2*L2=0.078*0.2=0.0156QeUP603*1620m电缆的电阻Rs和电阻X3R3=Ro3L3=1.16*O.O2=O.O232QXs=Xo3*L3=O.O9*O.O2=O.OO18Q最远点的三相短路电流I(3)d=Var/(v3*VE2+2X2)=690/(1.732
13、*V).08072+0.02052)=2762A两相短路电流I(2)d=0.87*Id(3)=0.87*2762=2403Af灵敏度校验Kr=I(2)d/Isb=2403/168=14.31.2合格二、06回顺46联巷移动变电站的整定计算负荷统计：LPn=200KW(一)、移动变电站高压馈电开关的过载保护整定长时工作电流：lea二KdeZPn/(VVnCOSOwm)=0.54*200/(1.732*6.3*0.85)=12A确定整定值Ise=1.2*Ica.=1.2*1214.4A、短路保护整定由过载保护确定短路保护整定值Isb.r=(1.21.4)*(lst.m+习n)=1.3(49+12)
14、=79A、灵敏度的校验.专业专注a系统电抗值Xsy=V2ar/Ss=0.69”500=0.0009522QbUGSP-63*50和UGSP-103*353600m电缆的电阻Ri和电阻XiRi二RoiLi/K2sc=0.1*3.6/(6/0.69)2=0.0047QXi=Xi*Li/K2sc=0.06*3.6/(6/.69)2=0.0028Qc变压器的电阻和电抗值Zt=VsV2ar.T/(100Sn.t)=4.43*0.692心00*0.50)=0.0422QRt=pN.TV2ar.T/S2N.T=4000X0.692/5002=0.00762QXt=vZt2-R2t=v0.04222-0.00
15、7622=0.04i5QPn.t:变压器功率损耗，4000WVs(%)：变压器的阻抗电压百分数，4.43(%)dUPQ-.i43*70i500m电缆的电阻R3和电阻X3R2二Ro2L2=0.267*i.5=0.4005QX2=Xo2*L2=0.078*i.5=0.ii7QeUP-.i43*6i0m电缆的电阻Rs和电阻X3Rs二Ro3L3=i.i6*0.0i=0.0ii6QXs=Xo3*L3=0.090*0.0i=0.0009Q最远点电机机的三相短路电流I(3)d=Var/(v3*VE2+2X2)=690/(i.732*V).42442+0.i6342)=876A两相短路电流I(2)d=0.87
16、*Id(3)=0.87*876=762Af灵敏度校验Kr=I(2)d/Isb=762/79=9.61.2符合要求(二)、移动变电站低压馈电开关的过载保护整定、长时工作电流：lea二KdeZPn/(v3VnC0Swm)=0.54*200心.732*0.69*0.85)=106A确定整定值Ise=1.2*Ica.=1.2*106128A、短路保护整定由过载保护确定短路保护整定值Isb.r=(1.21.4)*(lst.m+Dn)=1.2*(95+123)=218A、灵敏度的校验a系统电抗值Xsy=V2ar/Ss=0.69”500=0.0009522QbUGSP3*50和UGSP-103*353600m电缆的电阻Q和电阻X1R1二R01L1/K2sc=0.1*3.6/(
