短路电流与其计算

1、短路电流与其计算短路电流与其计算2短路电流与其计算3 短路电流与其计算4短路电流与其计算5短路电流与其计算6短路电流与其计算7短路电流与其计算8短路电流与其计算9短路电流与其计算10短路电流与其计算11短路电流与其计算12upkmksin()iItXRkarctan XRtp(0)km2iII Ipi短路电流与其计算13npinpkme2 ettiIInpi/LR=短路电流与其计算14kipikpnpiiik tIptInpit22k tptnptIIinptinpitpi短路电流与其计算15kikishishk0.01shp(0.01)np(0.01)kshk2(1e)2iiiIkI0.01

2、0.01sh1e1eRLk RshkLshkL短路电流与其计算16kishI2220.012shp(0.01)np(0.01)( 2 e)IIiII2sh12(1)kIXRshksh22.552.55kshik IIIsh1.511.51kIIIsh21.841.84kshik IIIsh1.091.09kIIIshk短路电流与其计算17IkIII(3)I短路电流与其计算18短路电流与其计算19短路电流与其计算20(3)cck2233UUIZRX短路电流与其计算21(3)ck3UIX(3)(3)kck3SU I短路电流与其计算222scocXUS短路电流与其计算23222NNkNTTTcc33

3、()()3SSPI RRRUU2cTkN()URPS NTNTk2cc3%() 100() 100I XS XUUU2ckTN%100UUXS短路电流与其计算24WL0RRWL0XX lll短路电流与其计算25(3)kI2cc()URRU 2cc()UXXU XRcU短路电流与其计算26短路电流与其计算27(3)kI(3)I(3)I(3)shi(3)shI(3)kS短路电流与其计算28短路电流与其计算29c1U22c11oc(10.5KV)0.22500MV AUSX20XlX(k 1)12XXX短路电流与其计算30(3)c1k 1(k 1)10.52.86kA332.12UKVIX(3)(3

4、)(3)k 1=2.86kAIII(3)(3)sh2.55=2.552.86kA7.29kAiI(3)(3)sh1.51=1.51 2.86kA4.32kAII(3)(3)k-1c1 k-133 10.5KV2.86KA52.01MV ASU I短路电流与其计算31c2(=0.4kV)U22-4c21oc(0.4kv)=3.2 10500MV AUXS 223c220c10.4()0.38(/)5()2.76 1010.5UkVXX lkmkmUkV A 22-5c230c10.4kV() =0.08( /km)0.5km() =5.8 1010.5kVUXX lU 短路电流与其计算3222-

5、3c2k4N%4.50.4=7.2 101001001000UUkVXSkV A(k 2)1234-4-3-5-3 =3.2 10+2.76 10+5.8 10+7.2 10 =0.01034XXXXX短路电流与其计算33(3)c2k 2(k 2)0.40.01034kA=22.3kA33UIX(3)(3)(3)k 222.3IIIkA(3)(3)sh=1.84 =1.8422.3kA=41.0kAiI(3)(3)=1.09 =1.0922.3kA=24.3kAshII(3)(3)k-2c2k-2330.422.3MV A=15.5 MV ASU I短路电流与其计算34(3)kI(3)I(3)

6、I(3)shi(3)shI(3)kS短路电流与其计算35有单位的实际值标幺值和实际值同单位的基准值ddAAA短路电流与其计算36233ddddddddSIUUUXSI短路电流与其计算372*2/scocdsdcdocXUSSXXUSS*0022/WLdWLdcdcXX lSXX lXUSU22kdcckTTdNdN%100100USUUUXXXSSS短路电流与其计算382(3)(3)ccdkkddc133UUSIIIS XXXU(3)(3)kkddIIIIX(3)(3)kckcdd33SU IU IXSX(3)I 、(3)I、(3)shi 、(3)shI( 3 )kI短路电流与其计算39短路电

7、流与其计算40短路电流与其计算41d1dc131003 10.55.50kAISUMV AkVd2dc2310030.4144kAISUMV AkV短路电流与其计算4222=0.38(/)5km 100(MV)/(10.5kV) =1.72XkmA23=0.08( /km)0.5km 100MV A/(10.5kV) =0.036X3kd4N%=4.5 100 10 kV A/100 1000kV=4.5100USXAS1=100MV A/500MV A=0.2X短路电流与其计算43短路电流与其计算44(1)12=0.2+1.72=1.92kXXX(3)1(1)=5.50/1.92=2.86k

8、AkdkIIX(3)(3)(3)-12.86kIIIkA(3)(3)sh2.55=2.55 2.86kA=7.29kAiI(3)(3)sh1.51=1.51 2.86kA=4.32kAII(3)-1d( -1)=100MV A/1.92=52.0MV AkkSSX短路电流与其计算45(2)1234=0.2+1.72+0.036+4.5=6.456kXXXXX(3)k 2d2(k 2)=144/6.456kA=22.3kAIIX(3)(3)(3)k 222.3IIIkA(3)(3)sh1.84=1.8422.3kA=41.0kAiI(3)(3)sh1.09=1.0922.3kA=24.3kAII

9、(3)k 2d(k 2)=100/6.456MV A=15.5MV ASSX短路电流与其计算46短路电流与其计算47短路电流与其计算48(2)kc2IUZ(2)kc2IUX(2)I(2)I(2)shi(2)shI(2)kc(2)(3)(2)(3)(3)kkkkk(3)kc2330.8660.866223IUZIIIIIIUZ短路电流与其计算49(1)k0UIZ220T0T0()()ZRRXX短路电流与其计算50a1i2iL70 1 21 222() 10Fii Laii L a07204 10N A短路电流与其计算51(2)shi(2)(2)27sh2() 10FiL a(3)(3)27sh3

10、() 10FiL a(3)(2)shsh23ii(3)(2)23= 1.15FF(3)shi(3)shI(3)shi短路电流与其计算52(3)(3)maxshmaxshiiorII(3)alcFF短路电流与其计算53cM Walalalalcc(3)shiM(3)shi(3)8MFL(3)10MFL(3)FlW2/6W b hbh短路电流与其计算54sh.Msh.MMMN.Msh.MN.M2(/)iKEXICKIMEMXsh.MKN.MI短路电流与其计算55cossh.Msh.MN.M= 6.5 1 300/( 33800.70.75)kA= 5.6 kAiCKI sh= (45.8 + 5.6) kA= 51.2 kAi(3)2727sh0.9310351.210 N = 2553.9N0.16LFia短路电流与其计算56(3)F(3)10= 2553.90.9/10N m = 229.9N mMFL-5c= 229.9/ 1.67 10 Pa = 13.8 106Pa= 13.8 MPaM W2-53= 0.120.01/6 = 1.67 10 m6b hW al70MPa13.8MPa短路电流与其计算57短路电流与其计算5