Sinhroni Generator

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    14-Apr-2015

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, 2004. 1 1: : Sng=150 MVA; Png=120 MW; Qng=90 Mvar; Ung=13,8 kV; cosn=0,8; xg=181% . =100 MW, , . . : je ( ). , (qn) . : ngng gngng gngngng ngg ngngngg ng g ng qnUP XjUQ XUUjQ PjX UUSjX U I jX U E + + =|||

\| + =|||

\|+ = + =*. , , I , . ( ) 3 , fI I 3 = . Xg Xr X , . ( ) : . 298 , 21508 , 1381 , 1100(%)22 = = =ngng ggSU xX : . cos100) sin100(n nggn nggng qnUxj UxU E + + = : Pn Qn Ung=Ung00 jXg qn 2 kVx xU Engngng qn04 , 35 ) 8 , 0 81 , 1 ( ) 6 , 0 81 , 1 1 ( 8 , 13 ) cos100( ) sin1001 (2 2 2 2= + + = + + = . . , . , . var 3 , 102298 , 28 , 1337 , 28 cos298 , 28 , 13 04 , 35cos37 , 288 , 13 04 , 35298 , 2 100arcsin arcsin sin22MXUXU EQU EP XXU EPgnggng qnong gnggng qn = ==|||

\|=|||

\|= = : . 72 , 501003 , 1020= ||

\|= ||

\|= arctgPQarctg . . P=100W Q=? jXg qn Ung d q Eq jXgI ref. osa I U 90o 3 a Eq ( Xg ) , U ( ). , ( ). ( ) (gXU2 ), . , Eq < U ( ), . , Eq U ( ), ( ( ) ). , , . . 4 2: : Sng=30 MVA; Png=24 MW; Qng=18 Mvar; cosn=0,8; Ung=11 kV; xd %=147,5%; xq %=77%. P = 20 MW , . . : (d ) (q ). , , ( ), d q , d q . , , ( ): : Eq ( ) ( ), I - ( ( ) 3 ), Id - d , U - . EQ - ( ) xq. d q : = = = 95 , 530111005 , 14710022%ngngddSUxX , = = = 105 , 330111007710022%ngng qqSU xX . , EQ : d q EQ Eq jId(Xd-Xq) jXqI ref. osa I Id U 900 5 kV jUX PjUX QU Eongq nngq nng Qn84 , 22 45 , 1711105 , 3 2411105 , 3 1811 =++ = + + = , : on84 , 22 = . : kAUPInn57 , 18 , 0 11 324cos 3 = = =. : . 87 , 36 8 , 0 coson n = = d q : . 36 , 1 794 , 0 575 , 1; 794 , 0 ) 84 , 22 87 , 36 cos( 575 , 1 ) cos(2 2 2 2kA I I IkA I Iqn n dnn qn= = = = + = + = ( ) : . 15 , 24 36 , 1 3 ) 105 , 3 95 , 5 ( 45 , 17 3 ) ( kV I X X E Ed q d Qn qn = + = + = , , , . Q. 2 sin1 12sin2|||

\| + =d qndn qnX XUXU EP 2 sin95 , 51105 , 31211sin95 , 511 15 , 24202||

\| += . 74 , 18 0 20 sin 647 , 44 2 sin 317 , 9o= = + , . |||

\| =|||

\| =95 , 574 , 18 cos105 , 374 , 18 sin11 74 , 18 cos95 , 511 15 , 24 cos sincos2 222 22 od qndn qX XUXU EQ Q = 20,02 Mvar. 6 3: : Sn=100 MVA, Pn=80 MW, Qn=60 Mvar, Un=10,5 kV, Xg=160%, Xr=15% ( ), Ipn=450A. . : ( ) ( ). qf : ,2 d pqfM IE = d , . : ,=f pdN NM : Np - , Nf - , - . Xg Xr X , . X: ; 764 , 11005 , 10100160100(%); 5986 , 11005 , 10100145100(%)% 145 15 160 (%) (%) (%)2 22 2 = = = = = == = =nnggnnr gSUxXSUxXx x x , : .23232 2 LN N XLf f= = = 23 1200. : 7 X IENNNNL I E LNNLNN NMpqffpfpp qffpff pd233232232 = = = =. , . ngn qnnXU EP sin = ; gnngn qnnXUXU EQ2cos = . : . 66 , 485986 , 1 45 , 0 25 , 16 323= = =X IENNpnqnffp ( ). : . 66 , 48 3 = fpNN kVEE kVUP XEXUQPtgqnqnfn nn gqnongnnnn5 , 16358 , 2414 , 33 sin 5 , 1080 764 , 1sin14 , 33 653 , 0764 , 15 , 1060802 2= = == == =+=+= 8 4: - . . q ? : - . , e . . : 2 sin1 12sin2|||

\| + =d q dqX XUXU EP ; |||

\|+ =d q dqX XUXU EQ 2 22cos sincos. , . EE- , ( , ). G U=1 r. j. Xt =0,1 r. j. X t T P = 0,1 r. j. Q = 0,8547 r. j. XdG =0,1 r. j. XqG =? G U=1 r. j. P = 0,1 r. j. Q = 0,8547 r. j. Xd = XdG +Xt Xq = XqG+Xt=? 9 , Q< 0, Q= -0,8547 r. j. . q=0. d q , . , Q< 0. q=0: d q d q d qX UPX UPX X X XUP12 sin2 12 sin2 1 12 sin1 122 22+ = = |||

\| = , (((

+|||

\|+ = |||

\|+ =d d d qX X UPU QX XU Q 22222 22cossin12 sin2 cos sin d d dPXUPQtg tgUPXUX UPU Q2222 22221 cos sincos sin 2sin 2 = |||

\|+ =|||

\| ++ = . otg 30 5775 , 0148 , 0 3 , 11148 , 0) 8547 , 0 (2 = = . < 450 , ( 450). : . . 9 , 0 . . 111 , 13 , 1160 sin 1148 , 0 2 12 sin2 12 2j r X j rX UPXqod q = = += + = . . 8 , 0 1 , 0 9 , 0 j r X X Xt q qG = = = . d q jId(Xd-Xq) jXqI ref. osa I = 83,30 Id U 10 5: : MVA 25 , kV 20 , Hz 50 , Y . . (Un = 20 kV) . ( ) : | | A IP 20 50 80 100 120 140 160 180 200 | | kV Eqf 1,73 8,53 16,90 18,48 20,13 21,46 22,53 23,33 24 A 100 8 , 0 cos = . 1 cos = ? : : : nf g nf qnfI jX U E + =. : kVUUnnf55 , 11310 2033== =, AVSInnnf69 , 72110 20 310 25336= ==. : MW S Pn n n20 8 , 0 10 25 cos6= = = , var 15 6 , 0 10 25 sin6M S Qn n n = = = A 100 kV Eqnf48 , 18 =. Inf Unf jXg qnf 11 : : ( )n g n nf n n qnfI X U E + = + sin sin ( )n nf n n qnfU E cos cos = +, : ( ) 5 , 010 48 , 188 , 0 10 55 , 11coscos33= = = +qnfn nfn nEU , = + 60n n , = = 13 , 23 8 , 0 arccos 60n . : ( ) = = += 57 , 1269 , 7216 , 0 10 55 , 11 60 sin 10 48 , 18sin sin3 3nfn nf n n qnfgIU EX . MW P Pn201 = = 1 cos1 = : AUPIn35 , 5771 10 20 310 20cos 336111 = = =. = 0 , , : ( ) ( ) ( ) kV I X U Eg nf qf625 , 13 35 , 577 57 , 12 10 55 , 11223 2121 = + = + = d q Eqnf jXqInf Inf Unf 90o 12 kV Eqf58 , 131 = A I AP80 501 < < . ( ) kV A 53 , 8 , 50 ( ) kV A 90 , 16 , 80 Ip1 1 qfE . ( ) ( ) 5050 8010 53 , 8 10 9 , 1610 53 , 813 331 = P qfI E A IP26 , 681 = . 13 6: - (If=Ifn/2). (BT) , . -. : () . ( ) ( - ) . (. ) , , ( ), . ( ) () . . 2 sin1 12sin2|||

\| + =d q dqX XUXU EP . G U=1 r. j. Xt =0,1 r. j. BT Xdg =1 r. j. Xqg =0,7 r. j. Sn=1 r. j. Un=1 r. j. Pn=0,8 r. j. Qn=0,6 r. j. (U=const.) M [o] Pn Pmax max

ddP 0 < ddP 14 ( ) , . ( ) ( ). A , , , . , ddPPs = . ( ). , 0. . : 2 cos1 1cos 02|||

\| + = =d q dqX XUXU EddP : nde qennden qnnX XUXU EP 2 sin1 12sin2|||

\| + = |||

\| =dnnqnnn nden qnnX XUXU EQ 2 22cos sincos on385 , 23 = . oo onde qe nde nn nde nqnX XX UUX PE 385 , 23 2 sin1 , 118 , 01385 , 23 sin 21 , 1 1385 , 23 sin 11 , 1 12 sin1 1sin 2 sin ||

\| =|||

\| = . . 87284 , 1 j r Eqn = , ( ): . . 93642 , 0287284 , 12j rEEqnq = = = 43 , 06 , 0 8 , 0 18 , 0 8 , 02 2 = + =+= n qen qenQ X UP Xtg 15 : 0 2 cos1 , 118 , 011 cos1 , 11 93642 , 00 2 cos1 1cos2 2= ||

\| + =|||

\| + de qe deqX XUXU E 0 2 cos 34041 , 0 cos 85133 , 0 = + o5 , 71max . 16 7: , , . : Sn=100 MVA; cosn=0,8; Un=21 kV; xd=120%; xq=80%. : : 2 sin1 12sin2|||

\| + =d qndn qX XUXU EP .cos sincos2 22|||

\| =d qndn qX XUXU EQ , , (=0). , , , . : . var 60 100 6 , 0 sin, 80 100 8 , 0 cos, 21M S QMW S PkV Un n nn n nn= = = = = == : MVA S SkV U Un bn b10021= = = = .