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. z5 n Z9 Y, u7 I) g基于MATLAB的电力系统潮流计算
* J5 \2 ]! y, \) r . [% i% E0 I$ b
%简单潮流计算的小程序,相关的原始数据数据数据输入格式如下:. @8 Y5 E; J, X- Y, Z
%B1是支路参数矩阵,第一列和第二列是节点编号。节点编号由小到大编写
. Q- a5 Q% `: O% Z' B1 `3 ^%对于含有变压器的支路,第一列为低压侧节点编号,第二列为高压侧节点
; B* @4 t: O( q( [%编号,将变压器的串联阻抗置于低压侧处理。
# j1 e5 w7 r- f* v/ l%第三列为支路的串列阻抗参数。
. Z7 H0 q9 M8 t%第四列为支路的对地导纳参数。7 v: e) L0 N( n5 p7 }
%第五烈为含变压器支路的变压器的变比! x) T+ h- z3 B
%第六列为变压器是否是否含有变压器的参数,其中“1”为含有变压器,
$ t( q7 ]& G5 j" e! K. P%“0”为不含有变压器。' v$ o; O. h( o" h
%B2为节点参数矩阵,其中第一列为节点注入发电功率参数;第二列为节点
! B2 Q* O5 K- D# @8 [" R- l%负荷功率参数;第三列为节点电压参数;第六列为节点类型参数,其中, }0 B! g9 w' L0 _6 q
%“1”为平衡节点,“2”为PQ节点,“3”为PV节点参数。4 h0 n V2 T, P+ Q; h, `
' @- j T/ e5 ?
%X为节点号和对地参数矩阵。其中第一列为节点编号,第二列为节点对地
7 C- Q: L+ ]) Q%参数。
5 D& q$ I6 E: ` x7 Gn=input('请输入节点数:n=');
2 W7 c% Z5 D) j, C" }) r. p' pn1=input('请输入支路数:n1=');
$ h3 Y. l1 y: ?+ F! L8 ]# }, risb=input('请输入平衡节点号:isb=');
$ `$ `) C7 ]9 ~5 Hpr=input('请输入误差精度:pr=');
0 k# A; C* @) A6 Z7 {- b8 ^! H2 EB1=input('请输入支路参数:B1=');7 d& d w9 |4 n) S; \$ W
B2=input('请输入节点参数:B2=');
- z: g1 f1 R* x( hX=input('节点号和对地参数:X=');' D# e6 `2 A' h7 l$ G. o! B4 \
Y=zeros(n);
% M/ ~7 h& n( b ^& QTimes=1; %置迭代次数为初始值3 z0 L# j3 f4 Z
%创建节点导纳矩阵
\; s! o; l$ H8 L4 g2 ? ufor i=1:n1
2 s( u5 g1 {+ V# u if B1(i,6)==0 %不含变压器的支路
4 U% N4 A% \% d8 Q4 H( j p=B1(i,1);
! M3 Q0 d1 q/ e. |5 ? q=B1(i,2);' {. m: C. F0 }8 c/ Z! V# ^
Y(p,q)=Y(p,q)-1/B1(i,3);# L( w& S$ k# }4 \+ d6 K! a
Y(q,p)=Y(p,q);
4 V3 e0 d* [# X' L3 X: }0 j Y(p,p)=Y(p,p)+1/B1(i,3)+0.5*B1(i,4);, \5 Q$ I' a( b4 I. q) |
Y(q,q)=Y(q,q)+1/B1(i,3)+0.5*B1(i,4);
4 I& t4 G( _4 N# @( w) E" i else %含有变压器的支路+ x0 {/ C8 ~% P7 C0 `8 c
p=B1(i,1);0 z: j2 B# ?" p( G6 i. r" s1 b
q=B1(i,2);9 R+ a! ?& {! J- `* f* }* `( C$ g
Y(p,q)=Y(p,q)-1/(B1(i,3)*B1(i,5));
0 I; ~8 P: Q8 A1 P( e Y(q,p)=Y(p,q);
) S( O! b+ _( X0 B( o: G" ]9 G Y(p,p)=Y(p,p)+1/B1(i,3);
3 ^, j" ?8 o- ~" P' k4 m3 @ Y(q,q)=Y(q,q)+1/(B1(i,5)^2*B1(i,3));' g$ W0 ?2 Z1 e q3 P, B. f
end
* `0 z! \! U2 d: F. p! I" [end
' F4 h& Y- K0 H1 d \4 b, f0 JY
6 J' d7 z) Q5 H) U+ ^0 P: H9 TOrgS=zeros(2*n-2,1);
6 T7 e8 [6 q1 Y2 {+ MDetaS=zeros(2*n-2,1); %将OrgS、DetaS初始化0 z/ w+ z* `" y9 \: r3 L
%创建OrgS,用于存储初始功率参数
' m" N* Y: v3 j% S8 ?h=0;
/ r6 o; ]& n4 _" I' {j=0;
$ Y1 w8 M ?( }1 V @& rfor i=1:n %对PQ节点的处理
8 ?# U8 ?* U( P" H/ d if i~=isb&B2(i,6)==2 * D" O0 N1 b1 R3 l8 |4 @
h=h+1;
. S% _8 T5 X9 Y' @ for j=1:n z9 M* U& I" r! M, O* y
OrgS(2*h-1,1)=OrgS(2*h-1,1)+real(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))+imag(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));+ I" X2 W8 v* F) }
OrgS(2*h,1)=OrgS(2*h,1)+imag(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))-real(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));
5 w( ~ ^( C* U. | end
: Y& R. n, M+ K' `" k3 R end# _: h( K5 H; I6 Q0 f! Z) ^) C
end2 ], Q j, y6 v$ G% R1 `( T3 T
for i=1:n %对PV节点的处理,注意这时不可再将h初始化为0
z5 D! W- N- i3 n: L2 @3 }9 O! m if i~=isb&B2(i,6)==3
+ V& u1 q# V- A R# R h=h+1;$ U7 L/ A! S2 H% E' ^1 a
for j=1:n
" E0 U9 y# x5 H OrgS(2*h-1,1)=OrgS(2*h-1,1)+real(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))+imag(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));
: Q( a* C4 ~% x* K8 L) V4 I4 Z OrgS(2*h,1)=OrgS(2*h,1)+imag(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))-real(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));9 A& B7 E" j1 G7 ?! t$ M# y+ \
end
+ D3 z" H4 R2 W* R; W, X end A) e7 e' C1 u
end
g- u G4 p1 C+ DOrgS V& I# j1 q( H4 z/ r
%创建PVU 用于存储PV节点的初始电压
5 c7 T Z( B, t8 |/ i8 o# f* UPVU=zeros(n-h-1,1);
, q* l/ w: p/ u% l! a1 i7 Gt=0;% r A9 n- [/ `8 G: V
for i=1:n
" f5 G) O1 F$ q, J' ` if B2(i,6)==38 W: \* T6 W4 `: Z# I: _
t=t+1;$ ], \4 ^" U8 e. ~5 {9 L1 l
PVU(t,1)=B2(i,3);* f5 I" g% s1 u) u$ b
end2 b0 Z7 s$ s- u1 \
end
, z1 Y/ j8 j9 d5 M" iPVU8 X5 q) D0 ?& \) G, u
%创建DetaS,用于存储有功功率、无功功率和电压幅值的不平衡量
! @4 D8 v& X+ c. P. H: b' M$ H+ \3 yh=0;6 }2 c7 x* C; z E' |
for i=1:n %对PQ节点的处理
4 q( b0 Z) S# q0 L/ p$ n+ y if i~=isb&B2(i,6)==2
4 U; @( X" \( g+ ~( f) q h=h+1;
8 N/ v# U) M" ?$ I8 S3 G/ m DetaS(2*h-1,1)=real(B2(i,2))-OrgS(2*h-1,1);
, i- z# m, a& K: ` n DetaS(2*h,1)=imag(B2(i,2))-OrgS(2*h,1);9 g3 b9 K9 j/ m* B
end( v. K+ K0 _! L2 A- [$ ?
end4 r5 r+ d3 _4 [- l% Q# }
t=0;
: o" \9 r1 h X; J- t8 Afor i=1:n %对PV节点的处理,注意这时不可再将h初始化为0
# I' C' _2 L& u7 C( M if i~=isb&B2(i,6)==3
5 c1 ]& m- U8 E; K h=h+1;
8 e. S- A( J# D2 M* m y t=t+1;3 S% O9 q1 G$ o# t5 ]- J
DetaS(2*h-1,1)=real(B2(i,2))-OrgS(2*h-1,1);
* o$ W2 O, _. \* @; t1 D DetaS(2*h,1)=real(PVU(t,1))^2+imag(PVU(t,1))^2-real(B2(i,3))^2-imag(B2(i,3))^2;
* n# ~4 {3 ~' v! w end
3 T8 s) w% | z' Y' L! m+ jend# A: W" }- r6 v ?+ O0 O+ B. s' p) d
DetaS
; B9 @8 k4 C2 h& n4 \3 K%创建I,用于存储节点电流参数
' Q6 `% t' b3 c, Fi=zeros(n-1,1);
! n4 k5 Q5 ?2 f% |" O; ?7 `" Ih=0; ]( V, V, P6 Z# h7 I& H1 ]
for i=1:n
& [) f! A4 v6 i" n& f if i~=isb- G, V6 \5 O9 w$ F/ E; {0 ?7 z
h=h+1;6 U1 a1 @: _" H7 W" F
I(h,1)=(OrgS(2*h-1,1)-OrgS(2*h,1)*sqrt(-1))/conj(B2(i,3));
3 J0 N3 {* G M2 o( X end- |$ u( X5 D- f2 z
end& F4 X. |; b0 N0 A* P: H$ I c
I6 ~* J" x' {* g1 q/ I/ P
%创建Jacbi(雅可比矩阵)3 ^! N2 H J; }" h
Jacbi=zeros(2*n-2);2 d$ i; x8 k, k" g& ?
h=0;
& A( S5 d- \2 Qk=0;
0 J, S# g* H' Sfor i=1:n %对PQ节点的处理# a2 N2 x. s; j# V
if B2(i,6)==2* H2 s4 L" l8 J/ I' ]4 i
h=h+1;1 y( `6 F1 e3 g
for j=1:n/ |1 J' t) I7 e
if j~=isb
+ i! _/ m/ H3 D" q$ ^3 M. r3 ?+ F) @. P k=k+1;
. A# {, ]$ H$ Y1 i. E if i==j %对角元素的处理1 I- N8 I2 g, A# F5 E
Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3))+imag(I(h,1));
8 @7 n7 K3 o F5 k5 I& q3 J. A Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3))+real(I(h,1));% b+ D) j, W Y1 ]/ P
Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2*k)+2*real(I(h,1));
+ t% N6 N8 S3 Z2 | w Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1)-2*imag(I(h,1));
% t8 i/ J, {+ N else %非对角元素的处理
* ]3 F! ~$ X2 Q- E# q5 V. Q Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3));6 u: G& h* B( U! }3 d& N
Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3));
6 Z; n: T( E! p1 W; K+ `9 J& O Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2*k);; R5 d( J0 o$ \, q+ ?5 Y
Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1);
5 E- n' ]9 ], M end
0 V# k+ b% z; ?- B: m. {, \& ~8 _. C if k==(n-1) %将用于内循环的指针置于初始值,以确保雅可比矩阵换行3 h" |. H# `8 V Y, [+ Y9 s4 Y; o$ }
k=0;
4 ]. d2 ^) f; D% ~1 O# k% C end3 X$ k8 Q8 P4 R" p( q4 x' y
end
7 `( Y0 z5 U9 ~ end
9 n) X, r5 }- ?1 n9 G9 {9 z8 q0 L) T6 ? end
# P! l. k) Z# O8 f* @; B5 kend
( F% i; b) `5 L, N) Fk=0;
# v8 k+ x' @% h3 f* ~for i=1:n %对PV节点的处理
\: `9 l- l, J7 ^9 h if B2(i,6)==3/ _7 t' i6 ^* U) ?8 m1 A
h=h+1;
) D; {4 w! M9 g$ h0 @5 j3 Q8 K3 | for j=1:n; E) O$ I# I% E; M+ t
if j~=isb
2 u3 Z0 D) R: ] ^ n: _ k=k+1;
; l8 w) U5 S- M3 V7 I/ X) Q5 D$ i) v' i if i==j %对角元素的处理6 B% h% }4 |8 l+ C4 K! d4 r
Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3))+imag(I(h,1));/ }3 n8 e9 o7 G% }# H9 ?4 P
Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3))+real(I(h,1));6 X6 f6 `+ C3 H- h
Jacbi(2*h,2*k-1)=2*imag(B2(i,3));
7 N& X9 I7 w) i7 I0 _ Jacbi(2*h,2*k)=2*real(B2(i,3));
. w A7 q0 _# _ else %非对角元素的处理+ ^ c/ W$ c7 a$ _. j6 U+ d9 Q n
Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3));
^, U# Z" U# O6 J& e Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3));
( K9 Y5 ?! }( W9 n, f Jacbi(2*h,2*k-1)=0;
( r! R2 F2 ]8 o0 k3 f1 v; L Jacbi(2*h,2*k)=0;$ v6 |: F5 t$ p g: h4 g3 ?, n
end
4 u, C6 c9 I8 W$ y/ ]/ V p6 [8 D if k==(n-1) %将用于内循环的指针置于初始值,以确保雅可比矩阵换行' c. z f' R$ f' X
k=0;
t: R1 r( Y3 E" v/ G6 y$ k end
4 b/ w7 O( |0 \7 B end
: a6 j, B) Q- h( ^; f4 e ] end
6 K6 s- O( @' C9 ]( S! U end
, N# x* r$ H6 X5 {& A6 qend
" A( w6 C, W) s2 u KJacbi
/ d4 P8 f: V' T; n# j# C; C5 x%求解修正方程,获取节点电压的不平衡量
* p4 j1 u/ H/ t3 G5 d8 }* J" oDetaU=zeros(2*n-2,1);
. t" Z6 A0 B% _3 t3 kDetaU=inv(Jacbi)*DetaS;
7 |, \0 m$ M! _) ?DetaU* k' J6 p. C* I q
%修正节点电压
+ B9 N& a" h/ Kj=0;
7 A- _+ g" X2 t6 Rfor i=1:n %对PQ节点处理3 K, |0 \3 R( N0 O$ o/ ]4 S3 t
if B2(i,6)==2
3 K' \6 A* g6 r/ Y4 s8 G4 b) d5 S j=j+1;
- a- @! ~& k, j. G B2(i,3)=B2(i,3)+DetaU(2*j,1)+DetaU(2*j-1,1)*sqrt(-1);- R8 K- ~9 u7 z7 B% q8 M$ l
end6 `1 ?+ L/ G1 o( p
end; o9 e a& Y( R
for i=1:n %对PV节点的处理9 B) z/ J: Q) d- n& [
if B2(i,6)==3
/ h* B& y. M9 F7 B" p j=j+1;0 V; A- J8 t3 `* Y% X4 [# g) c
B2(i,3)=B2(i,3)+DetaU(2*j,1)+DetaU(2*j-1,1)*sqrt(-1);
0 k8 Q8 J* h' t/ y$ |" J end
m2 \$ U; K- m ~end3 @7 V3 M5 S; S2 ]
B2/ j" ~- k/ _$ ^8 V
%开始循环**********************************************************************
|/ c2 l3 u% r% X- W# _4 Ewhile abs(max(DetaU))>pr/ w- W* ?9 q/ \9 M* z# h" U$ T5 E
OrgS=zeros(2*n-2,1); %!!!初始功率参数在迭代过程中是不累加的,所以在这里必须将其初始化为零矩阵
. m' |5 [! t# \, J' l3 Kh=0;7 H7 F$ Q( S# a9 ?
j=0;8 {' S/ a& T. u
for i=1:n
( w! X4 b/ j8 }/ y if i~=isb&B2(i,6)==2. W; M4 N b3 j
h=h+1;' }/ ^4 [* k {, B
for j=1:n
5 C m: y' g9 G" N/ W OrgS(2*h-1,1)=OrgS(2*h-1,1)+real(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))+imag(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));( j4 L) t9 B7 k2 U0 H
OrgS(2*h,1)=OrgS(2*h,1)+imag(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))-real(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));/ \9 O& H8 b* M" R
end
' R0 B, F2 d) v4 Y1 B end
+ c: j( A: s- H& t: }end3 d/ c! s( c. g4 g& E
for i=1:n
5 N( ~# ~1 _ E. e {& `. ? if i~=isb&B2(i,6)==3+ R3 H( F- P: n
h=h+1;. n/ Z: k* l; l+ E% X8 U" I
for j=1:n5 Q6 A# B5 ], h7 K$ n: t0 g) ?
OrgS(2*h-1,1)=OrgS(2*h-1,1)+real(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))+imag(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));
# b7 ]7 z( h9 X. U6 ` OrgS(2*h,1)=OrgS(2*h,1)+imag(B2(i,3))*(real(Y(i,j))*real(B2(j,3))-imag(Y(i,j))*imag(B2(j,3)))-real(B2(i,3))*(real(Y(i,j))*imag(B2(j,3))+imag(Y(i,j))*real(B2(j,3)));5 R* `/ y# B* w
end
" j+ C- h, b* L$ P; O end1 z% V( r7 D; Y/ X, S
end
1 o* l$ x+ A6 C8 I& L3 MOrgS5 X& o+ E# E0 N
%创建DetaS0 E! W& {! F0 A6 d% F- A/ f# _) S
h=0;
* Q& ^! W% T. ~! @8 B% F5 Pfor i=1:n Z, Y. U, g. _% F8 H
if i~=isb&B2(i,6)==2
# H) l# \1 E! {3 r9 A X h=h+1;
4 w3 }/ v, Q- b, V! P1 [( |) ] DetaS(2*h-1,1)=real(B2(i,2))-OrgS(2*h-1,1);
( a* E4 [2 e: s DetaS(2*h,1)=imag(B2(i,2))-OrgS(2*h,1);0 I/ j1 e9 N! M" m5 w
end1 `6 z5 z0 s P' O
end, i/ J$ h4 W; P4 I
t=0;
" ]+ W: p: b0 Rfor i=1:n
8 l9 \- Q, ]. ]. T3 d, G) ~ if i~=isb&B2(i,6)==3. @5 B2 ?' g+ G% d3 g
h=h+1;1 z* |4 n8 M3 B
t=t+1;3 k& y( a/ j% `
DetaS(2*h-1,1)=real(B2(i,2))-OrgS(2*h-1,1);
: Q" M# c. p1 ~8 j$ {$ Y" R DetaS(2*h,1)=real(PVU(t,1))^2+imag(PVU(t,1))^2-real(B2(i,3))^2-imag(B2(i,3))^2;1 r! L( v+ O9 I$ n6 W( {9 ?: E0 e
end; ^5 W3 Q5 F4 V9 Z
end+ |1 [* d$ } F6 z" d* \7 ]( K" i& R
DetaS( o5 V$ m; _+ Q3 X5 ~6 g5 Y
%创建I" @6 B9 z* Z& C1 a5 x
i=zeros(n-1,1);, Y5 x$ X- I' ~1 O4 ]- r
h=0;0 j. I9 D) Y% z% j; H
for i=1:n9 G+ S$ ]& ?0 u
if i~=isb. v* u5 m1 A* Q7 k4 M; f! i
h=h+1;/ X1 E: ?) |# ]' m" v
I(h,1)=(OrgS(2*h-1,1)-OrgS(2*h,1)*sqrt(-1))/conj(B2(i,3));. ]3 a# E9 `% m
end' o! d% ]! K3 l( z
end; a% d+ x' }/ z( x. k. U! l
I7 I$ e6 m- U( h# S" `
%创建Jacbi. n4 [, g) |1 Q0 W
Jacbi=zeros(2*n-2);
9 j. k3 h# P5 Y T. ^h=0;
$ h7 g( S, @) w2 ~7 M9 Zk=0;- Z* j: y, A* Q3 b: @
for i=1:n
1 X3 e+ M7 n, U/ W# ^0 m# z. r( x if B2(i,6)==20 N. M# Y4 H) s9 y, M
h=h+1;
1 a4 Q) C$ N, `& f* E- h% S% h for j=1:n
- }6 ~' M( z) K' v3 N if j~=isb
2 }+ I% L' [ \* q7 {( P k=k+1;
! A. P5 f3 B* ]- |0 @4 D! b* M if i==j1 T1 _) I% s% [
Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3))+imag(I(h,1));
: ]: T9 t1 D/ l7 F. [ Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3))+real(I(h,1));3 ~& F. i. ^3 X" V6 t( {( t) G
Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2*k)+2*real(I(h,1));& U$ z8 M2 k" P3 a& | @- p! r
Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1)-2*imag(I(h,1));
1 r0 K" G. s( F0 B& U5 j3 d else2 W1 d. N' D1 }7 [
Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3));
! }& ^8 m) w* n: [ Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3));
1 N o+ K6 z/ a; M" m% ] Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2*k);) m7 @/ l* c7 R$ X# M* z! I- q, b
Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1);3 U: k, }7 Y# X6 f" Y) {) C# X+ S" G5 A
end
5 k1 F& v- |/ G0 e: v) O if k==(n-1). r1 I, u; f' [
k=0;( e% c- L' N0 d2 K. L
end* C* C+ X$ A& B
end9 K3 y! U8 e- w2 O/ ~& r9 h
end) P: \; @. }3 w0 g
end
* M) f) Y- K* ^" E4 ^7 e' iend
; a% U1 M" p* bk=0;
- R+ R6 x3 t+ s2 ^7 l ~for i=1:n J( ~5 h/ i+ `8 k @* Q1 Q
if B2(i,6)==3
5 q h1 ^$ U: D9 Y: m h=h+1;/ a& A; A3 k$ p9 ^+ X5 g& h
for j=1:n7 \ f2 g6 i# {9 F! t6 l: L
if j~=isb! U/ J8 {4 I; M
k=k+1;
! H$ O( O$ \ q `( t' }) l if i==j
& U- q$ |, F$ e, t Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3))+imag(I(h,1));
0 R/ j- }" w: N, F: i Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3))+real(I(h,1));
6 W: S' C1 l; H& H; K7 g Jacbi(2*h,2*k-1)=2*imag(B2(i,3));
% `6 [8 T+ n0 r1 d: m! Z Jacbi(2*h,2*k)=2*real(B2(i,3));
. f1 }5 g v) v8 U# q else
9 L/ h8 g$ e! Y$ T, b: p q& l3 h Jacbi(2*h-1,2*k-1)=-imag(Y(i,j))*real(B2(i,3))+real(Y(i,j))*imag(B2(i,3));& c6 ]3 T6 L6 b; C3 b- g5 j
Jacbi(2*h-1,2*k)=real(Y(i,j))*real(B2(i,3))+imag(Y(i,j))*imag(B2(i,3));4 k1 c! R% K6 b3 X3 [! {& q2 d4 I
Jacbi(2*h,2*k-1)=0;( y* ^% N5 j/ o/ Y2 N
Jacbi(2*h,2*k)=0;( R) X \' A. Y K, |" p
end7 f) t# C4 F( N5 R- z
if k==(n-1)' |: U! T; {# v1 U. L
k=0;0 E6 h }3 W/ b& o- r
end- j; X; G M) k1 q
end( X# N5 }' _# q; P) [" }0 Q( t
end
: o( U; C' }. `% i5 d( @; @) } end
7 v: ]8 g2 O% D. qend& W/ i3 w# P) p# t) \' |; S. b+ @
Jacbi
8 c& w4 p1 X- W# [: Y# P+ V; p8 xDetaU=zeros(2*n-2,1);
( x) ~$ A3 T# l3 H" i U' PDetaU=inv(Jacbi)*DetaS;
9 Y& s! _9 O: x1 PDetaU1 w7 }/ N( b z) |! B$ Y4 L
%修正节点电压- z2 g0 ~$ G. c% C9 F1 \* y/ f/ Q! S
j=0;" Q; j4 h+ K7 c5 I: w
for i=1:n
5 z* N5 ^5 Z3 M, G8 L if B2(i,6)==2
( b, D$ j' H9 v0 O& f, Q4 Q4 { j=j+1;( V; [% i6 m. ~3 V/ X
B2(i,3)=B2(i,3)+DetaU(2*j,1)+DetaU(2*j-1,1)*sqrt(-1);
% F- w5 w+ P) a5 h2 ?+ `/ x end, ?: ^% S: l# Y# w. {9 I8 d
end
- [! W8 i" w5 P" ifor i=1:n# |+ `. S y$ {! H- r' @
if B2(i,6)==3, r4 D2 q9 V6 q0 ?* `; Q3 ^) [
j=j+1; v4 i- n+ y' I, M
B2(i,3)=B2(i,3)+DetaU(2*j,1)+DetaU(2*j-1,1)*sqrt(-1);! F, ^3 s4 q: J r) W9 L
end5 t; N1 s( I: N+ K
end5 D, F; Q1 |, \7 J D# D
B2; Q7 D2 l& P7 e2 R# R+ y% z/ X- u
Times=Times+1; %迭代次数加1
- R, d' C' C( P& g m$ N8 xend
* g$ x9 \9 f! T p: |8 aTimes, s6 \( Y- G" a/ k8 i
5 A5 x3 t5 q3 J. x
一个原始数据的例子7 H( g3 [: `& @1 O
节点数 5; H8 x8 k+ r+ j
支路数 5
0 P/ x/ U* z2 f" B9 w平衡节点编号 5
, t0 u( B H/ a4 b: k% z [精度pr 0.000001
3 S1 b1 S1 J$ G3 z! ?& J2 YB1(支路参数矩阵)8 N/ m" c. [1 F4 ]
[1 2 0.04+0.25i 0.5i 1 0;1 3 0.1+0.35i 0 1 0;2 3 0.08+0.30i 0.5i 1 0;4 2 0.015i 0 1.05 1;5 3 0.03i 0 1.05 1]
( y: W4 z- t( ^) M- {4 WB2(节点参数矩阵)
# }# S6 H9 ^, w. \' E7 g' V[0 -1.6-0.8i 1 0 0 2;0 -2-1i 1 0 0 2;0 -3.7-1.3i 1 0 0 2;0 5+0i 1.05 1.05 0 3;0 0 1.05 1.05 0 1]
, G) U9 l6 d. S# j$ r# ~X(节点号和对地参数)
9 r0 Z! w& [, s( x0 Y[1 0;2 0;3 0;4 0;5 0] |