1、潮流計(jì)算的MATLAB源程序潮流計(jì)算的MATLAB源程序潮流計(jì)算的MATLAB源程序潮流計(jì)算的MATLAB源程序編制僅供參考審核批準(zhǔn)生效日期地址： 電話：傳真: 郵編:%簡單潮流計(jì)算的牛頓拉夫遜程序，相關(guān)的原始數(shù)據(jù)數(shù)據(jù)數(shù)據(jù)輸入格式如下：%B1是支路參數(shù)矩陣，第一列和第二列是節(jié)點(diǎn)編號。節(jié)點(diǎn)編號由小到大編寫%對于含有變壓器的支路，第一列為低壓側(cè)節(jié)點(diǎn)編號，第二列為高壓側(cè)節(jié)點(diǎn)%編號，將變壓器的串聯(lián)阻抗置于低壓側(cè)處理。%第三列為支路的串列阻抗參數(shù)。%第四列為支路的對地導(dǎo)納參數(shù)。%第五列為含變壓器支路的變壓器的變比%第六列為變壓器是否含有變壓器的參數(shù)，其中“1”為含有變壓器，%“0”為不含有變壓器。%B2

2、為節(jié)點(diǎn)參數(shù)矩陣，其中第一列為節(jié)點(diǎn)注入發(fā)電功率參數(shù)；第二列為節(jié)點(diǎn)負(fù)荷功率參數(shù)；第三列為節(jié)點(diǎn)電壓參數(shù)；第六列為節(jié)點(diǎn)類型參數(shù)，其中“1”為平衡節(jié)點(diǎn)，“2”為PQ節(jié)點(diǎn)，“3”為PV節(jié)點(diǎn)參數(shù)。%X為節(jié)點(diǎn)號和對地參數(shù)矩陣。其中第一列為節(jié)點(diǎn)編號，第二列為節(jié)點(diǎn)對地%參數(shù)。n=input(請輸入節(jié)點(diǎn)數(shù):n=);n1=input(請輸入支路數(shù):n1=);isb=input(請輸入平衡節(jié)點(diǎn)號:isb=);pr=input(請輸入誤差精度:pr=);B1=input(請輸入支路參數(shù):B1=);B2=input(請輸入節(jié)點(diǎn)參數(shù):B2=);X=input(節(jié)點(diǎn)號和對地參數(shù):X=);Y=zeros(n);Times=1;

3、%置迭代次數(shù)為初始值%創(chuàng)建節(jié)點(diǎn)導(dǎo)納矩陣for i=1:n1 if B1(i,6)=0 %不含變壓器的支路 p=B1(i,1); q=B1(i,2); Y(p,q)=Y(p,q)-1/B1(i,3); Y(q,p)=Y(p,q); Y(p,p)=Y(p,p)+1/B1(i,3)+*B1(i,4); Y(q,q)=Y(q,q)+1/B1(i,3)+*B1(i,4); else %含有變壓器的支路 p=B1(i,1); q=B1(i,2); Y(p,q)=Y(p,q)-1/(B1(i,3)*B1(i,5); Y(q,p)=Y(p,q); Y(p,p)=Y(p,p)+1/B1(i,3); Y(q,q)

4、=Y(q,q)+1/(B1(i,5)2*B1(i,3); endendYOrgS=zeros(2*n-2,1);DetaS=zeros(2*n-2,1); %將OrgS、DetaS初始化%創(chuàng)建OrgS，用于存儲初始功率參數(shù)h=0;j=0;for i=1:n %對PQ節(jié)點(diǎn)的處理 if i=isb&B2(i,6)=2 h=h+1; for j=1:n 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

5、(j,3)+imag(Y(i,j)*real(B2(j,3); 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); end endendfor i=1:n %對PV節(jié)點(diǎn)的處理，注意這時不可再將h初始化為0 if i=isb&B2(i,6)=3 h=h+1; for j=1:n OrgS(2*h-1,1)=OrgS(2*h-1,1)+real(B

6、2(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); 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); end endendOrgS%創(chuàng)建PVU 用于存

7、儲PV節(jié)點(diǎn)的初始電壓PVU=zeros(n-h-1,1);t=0;for i=1:n if B2(i,6)=3 t=t+1; PVU(t,1)=B2(i,3); endendPVU%創(chuàng)建DetaS，用于存儲有功功率、無功功率和電壓幅值的不平衡量h=0;for i=1:n %對PQ節(jié)點(diǎn)的處理 if i=isb&B2(i,6)=2 h=h+1; DetaS(2*h-1,1)=real(B2(i,2)-OrgS(2*h-1,1); DetaS(2*h,1)=imag(B2(i,2)-OrgS(2*h,1); endendt=0;for i=1:n %對PV節(jié)點(diǎn)的處理，注意這時不可再將h初始化為0 i

8、f i=isb&B2(i,6)=3 h=h+1; t=t+1; DetaS(2*h-1,1)=real(B2(i,2)-OrgS(2*h-1,1); DetaS(2*h,1)=real(PVU(t,1)2+imag(PVU(t,1)2-real(B2(i,3)2-imag(B2(i,3)2; endendDetaS%創(chuàng)建I，用于存儲節(jié)點(diǎn)電流參數(shù)i=zeros(n-1,1);h=0;for i=1:n if i=isb h=h+1; I(h,1)=(OrgS(2*h-1,1)-OrgS(2*h,1)*sqrt(-1)/conj(B2(i,3); endendI%創(chuàng)建Jacbi(雅可比矩陣)Jac

9、bi=zeros(2*n-2);h=0;k=0;for i=1:n %對PQ節(jié)點(diǎn)的處理 if B2(i,6)=2 h=h+1; for j=1:n if j=isb k=k+1; if i=j %對角元素的處理 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); 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); Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2

10、*k)+2*real(I(h,1); Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1)-2*imag(I(h,1); else %非對角元素的處理 Jacbi(2*h-1,2*k-1)=-imag(Y(i,j)*real(B2(i,3)+real(Y(i,j)*imag(B2(i,3); Jacbi(2*h-1,2*k)=real(Y(i,j)*real(B2(i,3)+imag(Y(i,j)*imag(B2(i,3); Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2*k); Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1); end if

11、k=(n-1) %將用于內(nèi)循環(huán)的指針置于初始值，以確保雅可比矩陣換行 k=0; end end end endendk=0;for i=1:n %對PV節(jié)點(diǎn)的處理 if B2(i,6)=3 h=h+1; for j=1:n if j=isb k=k+1; if i=j %對角元素的處理 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); Jacbi(2*h-1,2*k)=real(Y(i,j)*real(B2(i,3)+imag(Y(i,j)*imag(B2(i,3)+real(I

12、(h,1); Jacbi(2*h,2*k-1)=2*imag(B2(i,3); Jacbi(2*h,2*k)=2*real(B2(i,3); else %非對角元素的處理 Jacbi(2*h-1,2*k-1)=-imag(Y(i,j)*real(B2(i,3)+real(Y(i,j)*imag(B2(i,3); Jacbi(2*h-1,2*k)=real(Y(i,j)*real(B2(i,3)+imag(Y(i,j)*imag(B2(i,3); Jacbi(2*h,2*k-1)=0; Jacbi(2*h,2*k)=0; end if k=(n-1) %將用于內(nèi)循環(huán)的指針置于初始值，以確保雅可比

13、矩陣換行 k=0; end end end endendJacbi%求解修正方程，獲取節(jié)點(diǎn)電壓的不平衡量DetaU=zeros(2*n-2,1);DetaU=inv(Jacbi)*DetaS;DetaU%修正節(jié)點(diǎn)電壓j=0;for i=1:n %對PQ節(jié)點(diǎn)處理 if B2(i,6)=2 j=j+1; B2(i,3)=B2(i,3)+DetaU(2*j,1)+DetaU(2*j-1,1)*sqrt(-1); endendfor i=1:n %對PV節(jié)點(diǎn)的處理 if B2(i,6)=3 j=j+1; B2(i,3)=B2(i,3)+DetaU(2*j,1)+DetaU(2*j-1,1)*sqrt(

14、-1); endendB2%開始循環(huán)*while abs(max(DetaU)prOrgS=zeros(2*n-2,1); %!初始功率參數(shù)在迭代過程中是不累加的，所以在這里必須將其初始化為零矩陣h=0;j=0;for i=1:n if i=isb&B2(i,6)=2 h=h+1; for j=1:n 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(

15、B2(j,3); 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); end endendfor i=1:n if i=isb&B2(i,6)=3 h=h+1; for j=1:n 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)*ima

16、g(B2(j,3)+imag(B2(i,3)*(real(Y(i,j)*imag(B2(j,3)+imag(Y(i,j)*real(B2(j,3); 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); end endendOrgS%創(chuàng)建DetaSh=0;for i=1:n if i=isb&B2(i,6)=2 h=h+1; DetaS(2*h-

17、1,1)=real(B2(i,2)-OrgS(2*h-1,1); DetaS(2*h,1)=imag(B2(i,2)-OrgS(2*h,1); endendt=0;for i=1:n if i=isb&B2(i,6)=3 h=h+1; t=t+1; DetaS(2*h-1,1)=real(B2(i,2)-OrgS(2*h-1,1); DetaS(2*h,1)=real(PVU(t,1)2+imag(PVU(t,1)2-real(B2(i,3)2-imag(B2(i,3)2; endendDetaS%創(chuàng)建Ii=zeros(n-1,1);h=0;for i=1:n if i=isb h=h+1;

18、I(h,1)=(OrgS(2*h-1,1)-OrgS(2*h,1)*sqrt(-1)/conj(B2(i,3); endendI%創(chuàng)建JacbiJacbi=zeros(2*n-2);h=0;k=0;for i=1:n if B2(i,6)=2 h=h+1; for j=1:n if j=isb k=k+1; if i=j 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); Jacbi(2*h-1,2*k)=real(Y(i,j)*real(B2(i,3)+imag(Y(i,j)*i

19、mag(B2(i,3)+real(I(h,1); Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2*k)+2*real(I(h,1); Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1)-2*imag(I(h,1); else Jacbi(2*h-1,2*k-1)=-imag(Y(i,j)*real(B2(i,3)+real(Y(i,j)*imag(B2(i,3); Jacbi(2*h-1,2*k)=real(Y(i,j)*real(B2(i,3)+imag(Y(i,j)*imag(B2(i,3); Jacbi(2*h,2*k-1)=-Jacbi(2*h-1,2*

20、k); Jacbi(2*h,2*k)=Jacbi(2*h-1,2*k-1); end if k=(n-1) k=0; end end end endendk=0;for i=1:n if B2(i,6)=3 h=h+1; for j=1:n if j=isb k=k+1; if i=j 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); 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); Jacbi(2*h,2*k-1)=2*imag(B2(i,3); Jacbi(2*h,2*k)=2*real(B2(i,3); else