UNUNsIN ImaxUNsImaxImaxSN10 I INbrINbrI\QFLE*X*LX*LSdUdIdQF INbrSN8-10/600 QFSNbr= 200 MVAI INbrSNbr3 UN200MVA3 10kV11.6kAI\XL%XL100ZNUNXL100(3 IN)QFLE*X*LIIdX*X*LE*X*X*LSd3 UdId1X*IdXLUNUNINXL% XL% IN XL XL XL0UN3 INIdIX*X*IdIX*I\QFLE*X*LXL%XL100ZNLUre% XL%1X*L IdIX*Zd Ud3 IdZNL=UNL3INLIsinIN= 80~ 90sinIXL%(dIIUX*) NLd100IdUNLUre%XL%IIN6070(%)I\QFLE*X*LiesishXL%(IdIX*) INLUd100IdUNLIt2tQkINbr XLU1U1U2ImaxImaxajIXLU2bcUU1 U2UbcImaxXLsincos= 0.8U% UUN3100ImaxXLsinINXN100ZNU%UUNXLXNXL100100ImaxXLsinINXN100ZNUUImaxsinINImaxsinINXL55(1) IFSN(2) IFTNIFSN> Imax t1t2t1INIdIt2 t1A.35kV IFTNIFSNImax2I IN Id IFSNB.K · ImaxK · ICNICNRN2 K IFSN(1) IFTN(2) IFSNIFSN IFTN(3) 1.RN2-102. UNUNUNSUNS1.7 ~ 2 30UNUNS UN 3.54 UN UNSUNS 22.5 6 ~ 8 300 ~ 400A Imax 1250 mm22 ~ 4 35kV 4000A 50MW Tmax L 4000 ~ 8000A50 ~ 100 MWImaxImax Ial8000A 110kV · Ial25KKalal0Tmax JSJImaxJImaxJC 110kV Ucr UmaxUcr> Umax6 -12f·al= 3001016 [J/·m4]C f·al ( Af ) w( Aw ) C p205 Af = 4.151016 [J/·m4]110kVLGJ-70 / 20220kVLGJ-300 / 30w= 70Aw = 1.2p2056-12Cf 4045505560657075808590f 9997959391898785838281186183181179176174171169166164161Kfw= 70C= 171f ( Af ) Sw ( Aw ) Qk S S fff 70140106Pa106PaSminKfQk Aw Afw A f·al A NfLEI mp793-471010 PaSSmin bh3/12
发电厂电气部分第13讲 导体和电气设备的原理与选择3 - 图文
