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发表于 2010-4-19 20:39:41
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一部分关于形成雅克比矩阵的程序,看不懂呀,希望各位大侠赐教!/ E$ j% z' ?- j- N
jay = sqrt(-1);; u0 K) p/ e4 e3 I/ ~
exp_ang = exp(jay*ang);$ Z- M/ F2 t* O* F; ?
% Voltage rectangular coordinates) p. f4 i& N/ |% Q v- o! _
V_rect = V.*exp_ang;/ ~ P" K+ l! L) f+ x+ d
CV_rect=conj(V_rect);
9 ]1 t4 c8 d, B' e' z7 ZY_con = conj(Y);4 P# J( N. T8 F0 k$ v
%vector of conjugate currents
+ P! F1 |* }! t9 e) @i_c=Y_con*CV_rect;! G9 `5 W3 T1 U) ?' u( g) H. R
% complex power vector
& X0 b" z1 d; F. Z% G) V- FS=V_rect.*i_c;' c& G) o" p2 U7 \
S=sparse(diag(S));) n: m' }! [3 r+ a. S( t) a
Vdia=sparse(diag(V_rect));
+ H! w7 a+ C8 M: ]CVdia=conj(Vdia);4 E$ V8 z h7 h1 |
Vmag=sparse(diag(abs(V)));
2 G" T# ^% N1 B$ m+ G6 XS1=Vdia*Y_con*CVdia;2 M9 ^% i; j4 B
t1=((S+S1)/Vmag)*volt_red';
: {) r7 T; A7 n0 ~, e. i2 st2=(S-S1)*ang_red';$ H- b5 e1 x+ X3 o& r& _( M9 I8 N
J11=-ang_red*imag(t2);
6 i! @( n$ S' ]: ~( }+ q, BJ12=ang_red*real(t1);
. P* ~3 N3 h4 {$ J7 w2 UJ21=volt_red*real(t2);7 W4 x r( [( C7 w4 R! n
J22=volt_red*imag(t1);" a- ]" j0 f3 [2 g! T
if nargout > 3- x" n C( Q% k' U2 I9 V/ r
Jac11 = J11; clear J11% m; F$ Q" G' Z
Jac12 = J12; clear J12
( W7 R5 [- l4 U, e Jac21 = J21; clear J21
9 w: A8 `/ E" ~" b9 a8 ^5 B$ g: m1 H Jac22 = J22; clear J22
9 F$ F$ m+ k8 E0 v h, Z9 k( Gelse# D- C1 ^- K: E! K/ J9 D* T" k
Jac11 = [J11 J12;
) G! f, H7 B& W ^" ?$ O J21 J22];5 J: Q8 s, C4 N+ J" U7 Y
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