1、1第五章第五章 三相变压器三相变压器的异常运行的异常运行234CBAUUU ,56 bcacbaUUUUUUUUUUUUcbacbacbacba相位相同相位相同互差互差互差互差大小相等大小相等大小相等大小相等大小相等大小相等00000120120),(),(),(),(不对称三相电压不对称三相电压正序正序负序负序零序零序7aIbIcI89000aaaabbbbccccIIIIIIIIIIII22000,bacabacaabcIa IIaIIaIIa IIII12022403,1jjaeaea211aa 1002020aaaabaaacaaaIIIIIa IaIIIaIa II2201()31(
2、)31()3aabcaabcaabcIIaIa IIIa IaIIIII 111213kzzzkzz14152Z1Z0mZ16mmzz0mmzz0171819202122232020020033mmmmmrzxIPrIUz2425 IIa0 cbIILaZIU 2622211()331313aabcbacaIIaIa IIIa Ia IIaIaI2722211()331313aabcbacaIIa IaIIIaIaIIa Ia I00011()33abcabcIIIIIII3/0IIIIaaa2822131313AaBbaCcaIIIIIa Ia IIIaIaI 2131313AaBbCcII
3、IIIaIIIa I 2922112333111333111333AAABBBCCCIIIIIIIIIa IaIIIIIaIa II 30 310 AU 0aaaIIILaLaZIIZU 3Zk AU aI aUZk0 AU aI aUZm02ZZ1 0AU 0aU3ZL aU0aI320002()aAakaakaamUUI ZUI ZUIZZZk AU aI aUZk0 AU aI aUZm02ZZ1 0AU 0aU3ZL aU0aI330002()aAakaakaamUUI ZUI ZUIZZ0002()()aaaaAakakamUUUUUIZI ZIZZ 02023AaaakmLUIII
4、ZZZZ 34203323AakmLUIIZZZZ 013AmLUIZZ 0033AkmUIIZ0 LZ35，很小kmZZ0可以带可以带决定决定由由LALZUIZI ,013AmLUIZZ 363738110 112sin()duUti rNdt112sin()dNUtdt0cos()cosmmttt cos()tmt costm 10r 112NUm392sinmt 400 cosmmt /t max2m41424312004445112sin()kkkkdiuUti rLdt2cos()2cosktTkkkkkiItIeii 122kkkUIrxkkkLTr4622sinkkiIt2cos()2cosktTkkkkkiItIeii 470 2cos2ktTkkkiItI e 48/t 1max2(1)2kTkkykiIekI11kTyke krkx1.2 1.4yk 1.5 1.8yk。yk49maxmax*1*12kkNkyyyNNkkNIIUikkkII ZZI1max2(1)2kTkkykiIekImax*ki*0.06kZmax*1(1.5 1.8)25 300.06ki*kZ50*kZmax*1(1.5 1.8)25 300.06ki515253120
