内部电弧故障试验情况下中压开关柜强度计算

:1001-1609(2002)04-0042-03(,201100)STRENGTHCALCULATIONOFMEDIUMVOLTAGESWTTCHGEARUNDERINTERNALARC2FAULTTESTXIONGTai2chang(SiemensSwitchgearLtd.Shanghai,Shanghai201100,China):,NXAIR,:;;:TM591:BAbstract:Themethodofstrengthcalculationandsomepressurereliefstructuresformediumvoltageswitchgearunderinternalarc2faulttestareintroduced.RelevanttestsappliedtotypeNXAIRswitchgeararecarriedoutbasedonsuchcalculationforverification.Keywords:internalarcfault;strengthcalculation;structureofpressurereliefdevice1,,,,,,,,,IEC298AA,1s,6,2WW=t10Imsin(t+)uadt(1):t1,:2002-02-25;:2002-04-20t1=1s;Im,;ua,,,ua=El,El12kV,,2030cm-40cm,,,l=40cm,E=13VPcm[1],,ua=520V,,,,NXAIR,V=9.15105cm3,=1.29310-3gPcm3,c=0.237CalP(g),Ik25,31.5kA40kA,1s1,12540kA,1sPkA2531.540PCal3.121063.931065.00106PK113521423318001p2PPa38.710548.610560.0105vPms-1196221982452p=kt,pp224August2002HighVoltageApparatusVol38No.4p1,,MPa,kt=1sp,Hugoniot,v[2](1)p=p2-p1=7(Ms2-1)6p1,Ms=v-v1c1,Msv1,,v10,,v=Msc1,c1,340mPs,p=k(t+tv),tv,,0.52m,tv=0.265ms,,ts,,p=kt,,ts,,,,ty,,,3311NXAIR1,2531.5kA,44mm2mm()4,151mm2,320MPa,F=48320NS=2780=2160cm2,FPS=0.224MPa,812mm,;1s,,225kA31.5kA0.02s00.224MPa6ms,ts=2ms,8ms,,,,p=kt25kA5,5,10M8,,29300N[3],1065cm125cm0.361MPa,8ms0.310MPa,,,,,t2-t1,0,,,3OABC:O,At1(8ms),;3420028384AB,;B,BCt20,31.5kA2,616ms,0.325MPa,100.361MPa,,,136,3124,5(),,450mm,,4Mannheim2Rheinau(PEHLA)8BK20NXAIR,(1)4NXAIR(a),(b)8ms,,2ms,(c);(d)0.26s,(2)2NXAIR,:,,El;(1)2NXAIR25kAPV1231.5kAPV39239261033433757068850665012kV,8BK20,3,,32540kA,8BK20PkAPMPa250.450.660.3531.50.600.750.45400.750.950.57:[1]1[M]1:,20001[2]1[M]1:,19871[3]1[M]1:,20001:(1942-),,,,44August2002HighVoltageApparatusVol38No.4