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发表于 2010-4-19 20:44:51
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一部分关于雅克比矩阵的,实在不懂,希望大侠们帮帮忙……/ p% O' g; e( V* H
jay = sqrt(-1);! m: e4 g' b, j9 F* r" I
exp_ang = exp(jay*ang);% Z& t$ @3 Q* ^; y' m
% Voltage rectangular coordinates: B, }3 [: P' f+ y% J* p9 [( S( _$ s
V_rect = V.*exp_ang; z8 m8 T5 w) Z1 z8 B
CV_rect=conj(V_rect);
1 o4 C& K' K2 ]/ N, I1 _, l. uY_con = conj(Y);& H; I. L+ s7 C+ B$ |8 Q5 W
%vector of conjugate currents
1 r- F4 W" A% j7 u8 U1 a% di_c=Y_con*CV_rect;/ ^6 E: _2 |, }: v
% complex power vector
6 ~% u% s, k- I' f/ n. Z8 cS=V_rect.*i_c;# f3 A1 W i2 {5 R% @$ [
S=sparse(diag(S));8 P/ P. q8 h' j6 V
Vdia=sparse(diag(V_rect));
$ o/ m* [. T) `$ v- c' r: u4 |5 B4 PCVdia=conj(Vdia);! i# ^) P3 k1 I
Vmag=sparse(diag(abs(V)));
* L# d* R/ x9 iS1=Vdia*Y_con*CVdia;
" N- T! L$ h# N b$ o- ft1=((S+S1)/Vmag)*volt_red';& k2 Y( k2 [" y6 w; n" @5 i
t2=(S-S1)*ang_red';4 f, ]& L4 Z$ w) i
J11=-ang_red*imag(t2);
: `; \ \! l" ?" z @J12=ang_red*real(t1);
' m M6 G9 a+ n, w8 R# ]7 kJ21=volt_red*real(t2);
8 X& W1 h9 I& h; J! jJ22=volt_red*imag(t1);
: F1 o2 I) ~$ Iif nargout > 3: }6 o# M# {( u; ~0 A4 O1 n8 j
Jac11 = J11; clear J11$ s8 J1 x0 {2 O% |2 A% U6 Y
Jac12 = J12; clear J12& p9 ~0 B5 g: M) y, s. ^
Jac21 = J21; clear J21
) _7 M- M" Q L8 ~6 `' f Jac22 = J22; clear J22' m- h& Z( Z ]4 f6 H4 x7 w2 G1 @
else3 A& @) n6 b. T7 O4 m/ X
Jac11 = [J11 J12;# D1 s2 ^6 A7 C7 Z, D$ E
J21 J22];- [' o! C% @; t4 E0 v& P
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