马上加入,结交更多好友,共享更多资料,让你轻松玩转电力研学社区!
您需要 登录 才可以下载或查看,没有账号?立即加入
×
clear;
7 h( N: ~6 W" t+ l7 }Yb=[6.25-18.75i -5+15i -1.25+3.75i 0 0+ K/ H! g3 z: [9 z
-5+15i 10.834-32.5i -1.667+5i -1.667+5i -2.5+7.5i
9 W# l: V+ K9 l: o0 b) Q2 q6 Z -1.25+3.75i -1.667+5i 12.917-38.75i -10+30i 0
' ?( \8 b; x: C8 L 0 -1.667+5i -10+30i 12.917-38.75i -1.25+3.75i: l1 g$ r4 e7 d: Z
0 -2.5+7.5i 0 -1.25+3.75i 3.75-11.25i];
- Y* A9 R, f# u: xPknow=[0;0.2;-0.45;-0.4;-0.6];Qknow=[0;0.2;-0.15;-0.05;-0.1];e1=1.06;f1=0;%已知量
* G& H7 e& w5 e. `8 ke=[1.06;1;1;1;1];f=[0;0;0;0;0];
: r. S a! p4 X+ q; ?/ P9 ck=0;%跌代次数
M( S1 Y% s8 Z5 k9 l! X2 y9 J1 @PQX=[1;1;1;1;1;1;1;1];%修正量
4 \" i) `6 a+ l' g4 C+ k8 n5 lP=zeros(4,1);Q=zeros(4,1);I=zeros(4,1);YAKEBI=zeros(8,8);
* C$ X0 w/ A+ D9 G4 m0 e* R3 Zwhile (max(PQX)>=0.1|min(PQX)<=-0.1)3 c# W3 n: F, x
k=k+1;( _5 `$ c3 K& M0 {/ _7 @. R$ }
for n=1:4+ K* h( E' y# M* l2 p! v% y9 u
for m=1:5( m: e( o5 P: G: T1 M" m% Y
P(n)=P(n)+e(n+1)*(real(Yb(n+1,m))*e(m)-imag(Yb(n+1,m))*f(m))+f(n+1)*(real(Yb(n+1,m))*f(m)+imag(Yb(n+1,m)*e(m)));. i. }& L# d& n D: `* X
Q(n)=Q(n)+f(n+1)*(real(Yb(n+1,m))*e(m)-imag(Yb(n+1,m))*f(m))-e(n+1)*(real(Yb(n+1,m))*f(m)+imag(Yb(n+1,m)*e(m)));4 ?; ]- @8 e& f, l4 [" @1 F- |
end
9 n( g; j8 i) P; ]7 V PQX(2*n-1)=Pknow(n+1)-P(n);7 T$ L( k9 s" n, {
PQX(2*n)=Qknow(n+1)-Q(n);
7 C B- L( J6 R" o- X I(n)=(P(n)-Q(n)*i)/(e(n+1)-f(n+1)*i);$ o2 L) P. m l9 k7 l- `# ~- }" f
end$ @$ D: D$ K' b$ P. x9 P* q
for n=1:4
5 I! Z$ T7 i2 z; N, r( E for m=1:47 P- g0 z4 d5 N4 v; z8 ~$ B
YAKEBI(2*n-1,2*m-1)=-imag(Yb(n+1,m+1))*e(n+1)+real(Yb(n+1,m+1))*f(n+1);%Hnm
9 E8 J1 @" i& j8 H" u- U YAKEBI(2*n-1,2*m)=real(Yb(n+1,n+1))*e(n+1)+imag(Yb(n+1,n+1))*f(n+1);%Nnm
! h9 P" G. P ]4 ^ YAKEBI(2*n,2*m-1)=-real(Yb(n+1,m+1))*e(n+1)-imag(Yb(n+1,m+1))*f(n+1);%Jnm. [7 |" i. V* r( P. f, B4 N( n
YAKEBI(2*n,2*m)=-imag(Yb(n+1,m+1))*e(n+1)+real(Yb(n+1,m+1))*f(n+1);%Lnm
/ y9 n/ a: ]! [ b) k end5 F& q+ ?4 v% ~$ D! h4 O, s E
YAKEBI(2*n-1,2*n-1)=-imag(Yb(n+1,n+1))*e(n+1)+real(Yb(n+1,n+1))*f(n+1)+imag(I(n));%Hnn
4 x" G, G3 \9 i' B" b YAKEBI(2*n-1,2*n)=real(Yb(n+1,n+1))*e(n+1)+imag(Yb(n+1,n+1))*f(n+1)+real(I(n));%Nnn
4 z$ A3 W8 r. f YAKEBI(2*n,2*n-1)=-real(Yb(n+1,n+1))*e(n+1)-imag(Yb(n+1,n+1))*f(n+1)+real(I(n));%Jnn' M. l2 W5 \7 V2 C( [1 _; l! w
YAKEBI(2*n,2*n)=-imag(Yb(n+1,n+1))*e(n+1)+real(Yb(n+1,n+1))*f(n+1)-imag(I(n));%Lnn/ X# ]3 E7 D4 p" x% f. d
end% build the yakebi matrix, u% v4 @, N4 C9 X
Dfe=inv(YAKEBI)*PQX; %修正fe9 y6 g1 x0 R! p! E
for n=1:4
- C: U! k5 y; N0 X. O f(n+1)=f(n+1)+Dfe(2*n-1);" z$ F9 ^5 z% `
e(n+1)=e(n+1)+Dfe(2*n);
- b) a# i/ X$ H+ E j5 n+ | end) L$ v" x3 Q0 Z+ Z/ y
f
P3 s; a, O c" j3 D) }8 @ e
1 L7 w& t" B7 {% aend, y+ S, `2 S& G7 r' Q( o
3 f6 ~( m/ _) ?
8 G1 Z: O [0 F: P9 o运行会出现8 {, s! z' F- c' z# e2 u# q7 E
Warning: Matrix is singular to working precision.6 v6 k- g4 Y$ }. i9 _
(Type "warning off MATLAB:singularMatrix" to suppress this warning.)5 B- D/ b0 U8 \. Y' M
> In f:\MATLAB6p5\work\yy.m at line 35; ~( T% I1 b7 }& M' |: w: t9 y \
% V, j w" l1 I2 H0 N8 [6 o! W j我这个程序是按照陈珩那本稳态分析的例子编的,想试试。完全没考虑PV节点
$ e. }0 {. y; b% C6 o这个程序要怎么改进啊? |