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1、?%木程序的功能是用牛頓——拉夫遜法進(jìn)行潮流計(jì)算%B1矩陣：1、支路首端號(hào)；2、末端號(hào)；3、支路阻抗；4、支路對(duì)地電納%5、支路的變比；6、支路首端處于K側(cè)為1，1側(cè)為0%B2矩陣：1、該節(jié)點(diǎn)發(fā)電機(jī)功率；2、該節(jié)點(diǎn)負(fù)荷功率；3、節(jié)點(diǎn)電樂(lè)初始位%4、PV節(jié)點(diǎn)電壓V的給定值；5、節(jié)點(diǎn)所接的無(wú)功補(bǔ)償設(shè)備的容fi%6、甘點(diǎn)分類標(biāo)號(hào)：1為平衡節(jié)點(diǎn)（應(yīng)為1號(hào)節(jié)點(diǎn)）；2為PQ節(jié)點(diǎn);%3為PV節(jié)點(diǎn)；clear;n=10;%input（’請(qǐng)輸入節(jié)點(diǎn)數(shù):n-）;nl=10;%inputf請(qǐng)輸入支路數(shù):nl-）;isb=l;%inp＜請(qǐng)輸入平衡母線節(jié)點(diǎn)號(hào):isb=’）;pr=0.00001;%i叩ut
2、（?請(qǐng)輸入誤差精度:pr='）;Bl=[l2230.03512+0.08306i0.13455i0.0068+0.18375i011.023810；1;140.05620+0.13289i0.05382i10；450.008ll+0.24549i01.023811;160.05620+0.13289i0.05382i10；460.04215+0.09967i0.04037i10；670.0068+0.18375i01.023811;680.02810+0.06645i0.10764i10；8100.0081l+0.24549i011;890.03512+0.08306i0.134
3、55i10]B2=[001.11.101;00100200.343+0.21256i1002；00100200.204+0.12638i1002；00100200.306+0.18962i1002；0010020.501.11.103；00.343+0.21256i1002];%hiputC請(qǐng)輸入各節(jié)點(diǎn)參數(shù)形成的矩陣：B2=');Y=zcros(n);c=zcros(1，n);f=zeros(l,n);V=zcros(l，n);sida=zcros(1，n);Sl=zcros(nl);%%%fori=l:nl%支路數(shù)ifBl(i，6)==0%左節(jié)點(diǎn)處于1側(cè)p=Bl(i,l);q=
4、Bl(i,2);else%左節(jié)點(diǎn)處于K側(cè)p=Bl(i,2);q=Bl(i,l);Y(p,q)=Y(p,q)-l./(Bl(i,3)*Bl(i,5));%非對(duì)角元Y(q，p)=Y(p，q);%非對(duì)角元Y(q,q)=Y(q,q)+1./(B1(i,3)*B1(i,5)A2)+B1(i,4)./2;%對(duì)角元K側(cè)Y(p,p)=Y(p,p)+1./B1(i,3)+B1(i,4)./2;%對(duì)角元1側(cè)end%求導(dǎo)納矩陣dispC導(dǎo)納矩陣Y=.);disp(Y)%分解出導(dǎo)納陣的實(shí)部和虛部%給定各節(jié)點(diǎn)初始電壓的實(shí)部和虛部%PV節(jié)點(diǎn)電壓給定模位%給定各節(jié)點(diǎn)注入功率%i節(jié)點(diǎn)注入功率SG-SL%i節(jié)點(diǎn)無(wú)
5、功補(bǔ)償量%G=real(Y);B=imag(Y);fori=l:ne(i)=real(B2(i,3))；f(i)=imag(B2(i,3))；V(i)=B2(i,4);endfori=l:nS(i)=B2(i,l)-B2(i,2);B(i,i)=B(i,i)+B2(i,5);end%===========—=—================—===========P=rcal(S);Q=imag(S);%分解出各節(jié)點(diǎn)注入的冇功和無(wú)功功率ICTl=0;IT2=l;N0=2*n;N=N0+l;a=0;%迭代次數(shù)ICT1、a;不滿足收斂要求的?點(diǎn)數(shù)IT2whileIT2?=0%N0=
6、2*n雅可比矩陣的階數(shù)；N=N0+l擴(kuò)展列IT2=0;a=a+l;fori=l:nif一isb%非平衡節(jié)點(diǎn)C(i)=0;D(i)=0;forjl=l:nD(i)=D(i)+G(ij1)*f(jl)+B(i,j1)*e(jl);%E(Gij*fj+Bij*ej)endPl=C(i)*e(i)+f(i)*D(i);%節(jié)點(diǎn)功率P計(jì)算ei2(Gij*ej-Bij*fj)+fiE(Gij*fj+Bij*ej)Ql=C(i)*f(i)-e(i)*D(i);%節(jié)點(diǎn)功率Q計(jì)算fi2(Gij*ej-Bij*fj)-eiE(Gij*fj+Bij*ej)%求i節(jié)點(diǎn)有功和無(wú)功功率P’，Q
7、的計(jì)算值V2=
8、e(i)A2+f(i)A2;%電壓模平方%=====以下針對(duì)非PV節(jié)點(diǎn)來(lái)求取功率差及Jacobi矩陣元素=====ifB2(i,6)^30/dh:PV節(jié)點(diǎn)DP=P(i)-Pl;%節(jié)點(diǎn)有功功率差DQ=Q(i)-Ql;%節(jié)點(diǎn)無(wú)功功率差%=========以上為除平衡節(jié)點(diǎn)外K它節(jié)點(diǎn)的功率計(jì)算==========%==========求取Jacobi矩陣============forjl=l:nifjl?=isb&jl^=i%非T衡節(jié)點(diǎn)&非對(duì)角元Xl=-G(i,jl)*e(i)-B(i,
