电力系统分析公式

1《电力系统分析》常用公式第二章电力网各元件的等值电路和参数计算/rs2=18.8mm/rkm铜2=31.5mm/rkm铝3122331=eqDDDD水平排列3=1.26eqDDDDD0.8SDr0g分裂根数为2时=sbSDDd分裂根数为3时23=sbSDDd分裂根数为4时34=1.09sbSDDd单0=0.0628ln=0.1445lg/eqeqDDxkmDsDsΩ多0=0.0628ln=0.1445lg/eqeqsbsbDDxkmDDΩ二分裂=eqrrd三分裂32=eqrrd四分裂34=1.09eqrrd-607.58*10=/lgeqeqbskmDr00Z=(r+jx)*l00Y=(g+jb)*l00Z=(kr+jk)*lxrx'0=jk*lbbY'2001=1-3rkxbl22000001=1-(-)6xbkxbrlx2001=1+12bkxbl变压器参数：00%100NIQS232*10SNTNPVRS23%**10100SNTNVVXS-302*10TNPGV12NTNVKV-302%**10100NTNISBV23BBBBBVVZSI3BBBSIV*3BBBVIIIIS2*2*NBBNBVSXXSV2*G*2*GBGGBVSXXSV22%**100SNBTNBVVSXSV2%**1003RRBRBRVVSXVI*2*BLLBSXXV(1)(2)*(1)(2)//TNTNTBBVVKVV2第三章同步发电机的基本方程2=[icos+icos(-120)+icos(+120)]3dabci2=[isin+isin(-120)+isin(+120)]3qabci0=i*i*iabcidqVVVdqIII()qqqddqdqdqVEjXIjXIEjXXIjXI()QqdqdEEjXXIQqVEjXI第六章短路电流周期分量的近似计算*1PffIX*=BPPBffIIIIX***/BffBPBSSXSfIS第九章电力系统的负荷240dWpdt87600Wpdt24012424davWPpdtmaxavmPkPminmaxPP8760maxmaxmax01WTpdtPP第十章电力传输的基本概念PRQXVVPXQRVV电压偏移（%）=*100NNVVV无功损耗212BQBV变压器的励磁损耗20()TTSGjBV输电效率=12*100%PP221222()VVVV2222()PQSRjXV2112111()()BDBVDVVSBB2112222()()BABVAVVSBB第十一章电力系统的潮流计算iiiVejfijijYGjB11()()nniiijjijjiijjijjjjPeGeBffGfBe11()()nniiijjijjiijjijjjjQfGeBFeGfBe11()()nniisiijjijjiijjijjjjPPeGeBffGfBe11()()nniisiijjijjiijjijjjjQQfGeBfeGfBei1,2,3,,mWJV3=-=-(+)iiijjijjjjPQijGeBfef时=-=-iiijiijijjPQBeGffe22==0iijjVVef1==-()--niikkikkiiiiiikiPijGeBfGeBfe时1=-()+-niikkikkiiiiiikjPGfBeBeGff1=-()++niikkikkiiiiiikiQGeBfGeBff1=()+-niikkikkiiiiiikiQGfBeBeGfe2=-2iijVee2=-2iijVff第十三章电力系统的有功功率平衡和频率调整DDPKf*NDDDNfKKPfP*GNNPf1GGPKf**1NGGGNfKKP0(+)DGDGDPPPKKfKf0+/GDDKKKPf0**+-GNDNDGDNNPPPKKfff*=1*nGiGiNiGGNKPKP***=11==GNnGGiGiNiPKKPi*1=-*GiNGiGiiNPfPKfff**=-GiGiNiPfP