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发表于 2009-3-10 12:08:26
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这是我写的潮流的一个函数
7 H9 K$ ]$ N" ffunction jacobian=jacobian(V,Y1,dij,nodeNum,PVI,balanceNode)
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% [) x9 B }8 J% \: VH=diag(V)*(Y1.*sin(dij))*diag(V)-diag(diag(V)*(Y1.*sin(dij))*(V));. ^6 O+ |1 v' b" q. c. @
N=(-diag(V)*(Y1.*cos(dij)))+diag((Y1.*sin(dij))*(V));$ f7 o: J9 a# B6 X8 o% K
J=diag(V)*(Y1.*cos(dij))+diag((Y1.*cos(dij))*(V))*diag(V);
' R. ^2 e2 F/ i- `L=diag(V)*(Y1.*sin(dij))+diag((Y1.*sin(dij))*(V))*diag(V);
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H(balanceNode,:)=0;
4 u0 b) a* [2 ^* Z; h4 C$ o" w* @N(balanceNode,:)=0;6 n* t$ R/ Q; E# L
J(balanceNode,:)=0;- P6 W9 G: ~/ E" Y
L(balanceNode,:)=0;" i# A( M$ I4 b
H(:,balanceNode)=0;
( }: N) `" e( k# ]7 p) ^$ X( U2 Y3 ^N(:,balanceNode)=0;; Z* v4 ^8 m/ ~' u% Y7 W$ V
J(:,balanceNode)=0;) H, r! c; o8 z' G) b
L(:,balanceNode)=0;
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H(balanceNode,balanceNode)=100;
/ H- r# `7 F4 H0 {! H9 ~: B5 ML(balanceNode,balanceNode)=100;. N; c2 V9 g& A* m. _$ h
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L(PVI,:)=0;
! A5 r, |3 x+ j& o8 dJ(:,PVI)=0;
9 L# P; l7 H( H) H/ a8 YL(:,PVI)=0;
: P3 d" z+ M' i# \/ x( s% M$ J$ YN(PVI,:)=0;5 E3 y6 E/ I t, L
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PV_Diag=sparse(PVI,PVI,100,nodeNum,nodeNum);+ D) N- b a5 I& c9 U
L=L+PV_Diag;
9 p. @9 c% d/ S% u/ e" | Z- \jacobian=[H,J;N,L]; |
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