电力变压器和电抗器的雷电冲击和操作冲击试验导则_GB_7449-87

UDC621.314.222.6621.316.933621.317GB744987IEC722(1982)GB311.2311.683GB1094.3851GB1094.385GB311.2311.68323GB1094.385a.1.230%/5020%sb.25s0.3(0.250.35)c.(T1)20250s90%(Td)200s(TZ)500sGB311.383114(2)a.b.c.()2CgCLCtLtRsi()Rse()Rp()ZcZ1Z2RsiRsea.CtLtCtLt6.16.37.2.17.3.1Ab.Cgc.RsiRse,Rp,CLZ1d.e.T1CgCtRsiRseCLT2LtCgRpLtRsi+RseT2T27RsiRseRpCLRsi()CLAGB311.5835GB311.58550%GB311.483GB311.58366.1()6.1.1T1T1GB311.383()5%T1T1()()T1()10%T16.1.2T2T2T2CgRpCgLtRpT2a.75%b.()40075%c.50075%()50%A6.1.3T113sT26.26.2.1TCTC(GB311.383)25s6.2.2(GB311.383)0.30.3ZC(2)0.250.353abcd6.3GB1094.385T2(46.1)3a.b.c.d.a.b.c.b.d.c.6.4GB1094.385GB1094.385()6.56.5.1GB1094.385a.b.(6.3)6.5.2a.10s()10sb.50s1025s6.5.3a.b.a.1020sb.100200s1050s1050s77.17.27.2.1GB1094.385T120250sT2500s90%Td200s(1a)50%(2)T2Td(1a)T1T2T27.2.2GB1094.38544U0.5U1.5U0.5U1.5U(BB14)0.5T11.5()1.57.2.3a.(50%75%)b.c.()60%127.2.47.2.4.17.2.27.2.4.2a.100300sTd5001000sb.T210002000s7.2.4.3a.b.c.7.37.3.1T1/TdT2(1bBB16)(AA2)T1(AA1)T1T1T2T175%50%7.3.21.57.3.3a.b.c.7.3.48B8.150%(BB13)(BB12)(BB11)8.1.1a.(BB1)b.c.T2(BB3B4B5)d.(BB6)8.1.28.1(BB1)(BB3)a.b.c.(23s)8.1.3a.(BB8B9)b.(BB2B7)8.28.2.1T2(BB15)T28.2.27.2.4.37.3.4A()A.1A.2a.b.A1(Lt100mH)A1abCgCCt+CL+C1(2)RsRsi+Rse(2)Rp(2)+⋅≈+⋅+≈A1a)(3A1a)(3ggs1ggpsps1CCCCRTCCCCRRRRT(A1)+≈++≈)a1A()(7.0)a1A())((7.0gp2gps2CCRTCCRRT(A2)RpRsCgC≈≈gp2s17.03CRTCRT(A3)CtCCtCtCB+esCCCBCsCeCtCBCe(A3)Ct20100mH(=RpCg)T2(A3)RpRp(A3)210A2A2(Lt20mH)A2k(k=1)(k1)k1)cos(ecossincosttetϕωϕωωαωαα+=−=−−tUttUU(A4)2=20-2gt201CL=ωts2LR=α21tgkk−==ωαϕ2gts0CLRk==ωαA3A3T2Rs(A4)Ut=Ucos0tT2gt023261CLTπωπ=⋅=(A5)100%GB1094.885Ur50%(A5)k=0.25T2gt25.0CLT⋅≈(A6)A4RsRs0CtCeCB(A5)(A6)LtCgLt()Lt75%Cg(A7)Cgt22g2LTC⋅≈(A7)Lt75%Lt(A7)stRL=τ(A8)(A8)CLRsRsRsA475%()B()IEC722(1982)a.(B1)b.(B2)c.(B3)B1400kVa100sb100sc25s13sB2115kVa10sb100s2sB3400/220kVa100sb100sc100s30sd.(B4)e.(B5)B4400kV1.1%a100sb100sc25sd250s100%f.(B6)B5220kVa100sb100sB6220/110kVa100sb100sc100s3035sg.(B7)a.(B8)b.(B9)B766kVa10sb15s10%a.(B10)B8115kVa10sb50sc50s1015sB9220kVa50sb50sb.(B11)a.(B12)b.(B13)a.(B14)b.(B15)c.(B16)B10115kVa10sb100sB11220kVa25sb25sc50sd50sB1275sB13400kVa50sb50s100%62.5%B11(a)(b)()B11(c)(d)()B14400kVa5000sb(52%)5000sc5000sB15525kVa5000sb5000sc500s100%300sB16525kV33a5000s(T1200sTd225sT21000s)b5000s