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<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/626b750c7ae5df2aa71105ae/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">>> %<span class="ff2">本程序的功能是用牛顿拉夫逊法进行潮流计算</span></div><div class="t m0 x1 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0">n=input('<span class="ff2">请输入节点数</span>:n=');</div><div class="t m0 x1 h3 y4 ff1 fs0 fc0 sc0 ls0 ws0">nl=input('<span class="ff2">请输入支路数</span>:nl=');</div><div class="t m0 x1 h3 y5 ff1 fs0 fc0 sc0 ls0 ws0">B1=input('<span class="ff2">请输入由各支路参数形成的矩阵</span>:B1=');</div><div class="t m0 x1 h3 y6 ff1 fs0 fc0 sc0 ls0 ws0">B2=input('<span class="ff2">请输入各节点参数形成的矩阵</span>:B2=');</div><div class="t m0 x1 h4 y7 ff1 fs0 fc0 sc0 ls0 ws0">Y=zeros(n); e=zeros(1,n);f=zeros(1,n);V=zeros(1,n); </div><div class="t m0 x1 h4 y8 ff1 fs0 fc0 sc0 ls0 ws0">O=zeros(1,n);S1=zeros(nl);</div><div class="t m0 x1 h3 y9 ff1 fs0 fc0 sc0 ls0 ws0">%<span class="ff2">求导纳矩阵</span></div><div class="t m0 x1 h4 ya ff1 fs0 fc0 sc0 ls0 ws0">for i=1:nl</div><div class="t m0 x1 h4 yb ff1 fs0 fc0 sc0 ls0 ws0"> if B1(i,6)==0</div><div class="t m0 x1 h4 yc ff1 fs0 fc0 sc0 ls0 ws0"> p=B1(i,1);q=B1<span class="_ _0"></span>(i,2);</div><div class="t m0 x1 h4 yd ff1 fs0 fc0 sc0 ls0 ws0"> else p=B1(i,2);q=B1(i,1);</div><div class="t m0 x1 h4 ye ff1 fs0 fc0 sc0 ls0 ws0"> end</div><div class="t m0 x1 h4 yf ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _1"></span>Y(p,q)=Y(p,q)-1./(B1(i,3)*B1(i,5));</div><div class="t m0 x1 h4 y10 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _1"></span>Y(q,p)=Y(p,q);</div><div class="t m0 x1 h4 y11 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _1"></span>Y(q,q)=Y(q,q)+1./(B1(i,3)*B1(i,5)^2)+B1(i,4);</div><div class="t m0 x1 h4 y12 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _1"></span>Y(p,p)=Y(p,p)+1./B1(i,3)+B1(i,4);</div><div class="t m0 x1 h4 y13 ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x1 h3 y14 ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">导纳矩阵<span class="_ _2"> </span></span>Y=');</div><div class="t m0 x1 h4 y15 ff1 fs0 fc0 sc0 ls0 ws0">disp(Y);</div><div class="t m0 x1 h4 y16 ff1 fs0 fc0 sc0 ls0 ws0">G=real(Y);B=imag(Y);</div><div class="t m0 x1 h4 y17 ff1 fs0 fc0 sc0 ls0 ws0">for i=1:n</div><div class="t m0 x1 h4 y18 ff1 fs0 fc0 sc0 ls0 ws0"> e(i)=real(B2(i,3));</div><div class="t m0 x1 h4 y19 ff1 fs0 fc0 sc0 ls0 ws0"> f(i)=imag(B2(i,3));</div><div class="t m0 x1 h4 y1a ff1 fs0 fc0 sc0 ls0 ws0"> V(i)=B2(i,4);</div><div class="t m0 x1 h4 y1b ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x1 h4 y1c ff1 fs0 fc0 sc0 ls0 ws0">for i=1:n</div><div class="t m0 x1 h4 y1d ff1 fs0 fc0 sc0 ls0 ws0"> S(i)=B2(i,1)-B2(i,2);</div><div class="t m0 x1 h4 y1e ff1 fs0 fc0 sc0 ls0 ws0"> B(i,i)=B(i,i)+B2(i,5);</div><div class="t m0 x1 h4 y1f ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x1 h4 y20 ff1 fs0 fc0 sc0 ls0 ws0">P=real(S);Q=imag(S);</div><div class="t m0 x1 h3 y21 ff1 fs0 fc0 sc0 ls0 ws0">%<span class="ff2">求雅可比矩阵</span></div><div class="t m0 x1 h4 y22 ff1 fs0 fc0 sc0 ls0 ws0">for ICT1=1:3</div><div class="t m0 x2 h4 y23 ff1 fs0 fc0 sc0 ls0 ws0">for i=1:n-1</div><div class="t m0 x3 h4 y24 ff1 fs0 fc0 sc0 ls0 ws0">C(i)=0;</div><div class="t m0 x3 h4 y25 ff1 fs0 fc0 sc0 ls0 ws0">D(i)=0;</div><div class="t m0 x3 h4 y26 ff1 fs0 fc0 sc0 ls0 ws0">for j1=1:n</div><div class="t m0 x4 h4 y27 ff1 fs0 fc0 sc0 ls0 ws0">C(i)= C(i)+G(i,j1)*e(j1)-B(i,j1)*f(j1);</div><div class="t m0 x1 h4 y28 ff1 fs0 fc0 sc0 ls0 ws0"><span class="_ _0"></span> D(i)= D(i)+G(i,j1)*f(j1)+B(i,j1)*e(j1);</div><div class="t m0 x1 h4 y29 ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x5 h4 y2a ff1 fs0 fc0 sc0 ls0 ws0">P1=C(i)*e(i)+f(i)*D(i);</div><div class="t m0 x6 h4 y2b ff1 fs0 fc0 sc0 ls0 ws0">Q1=f(i)*C(i)-D(i)*e(i);</div><div class="t m0 x6 h4 y2c ff1 fs0 fc0 sc0 ls0 ws0">V2=e(i)^2+f(i)^2;</div><div class="t m0 x7 h4 y2d ff1 fs0 fc0 sc0 ls0 ws0"> </div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>
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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/626b750c7ae5df2aa71105ae/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x6 h4 y2e ff1 fs0 fc0 sc0 ls0 ws0">if B2(i,6)==1</div><div class="t m0 x8 h4 y2f ff1 fs0 fc0 sc0 ls0 ws0">DP=P(i)-P1;</div><div class="t m0 x8 h4 y30 ff1 fs0 fc0 sc0 ls0 ws0">DQ=Q(i)-Q1;</div><div class="t m0 x8 h4 y31 ff1 fs0 fc0 sc0 ls0 ws0">for j1=1:n-1</div><div class="t m0 x4 h4 y32 ff1 fs0 fc0 sc0 ls0 ws0">if j1~=i</div><div class="t m0 x9 h4 y7 ff1 fs0 fc0 sc0 ls0 ws0">X1= -G(i,j1)*e(i)-B(i,j1)*f(i);</div><div class="t m0 x9 h4 y8 ff1 fs0 fc0 sc0 ls0 ws0">X2=B(i,j1)*e(i)-G(i,j1)*f(i);</div><div class="t m0 x9 h4 y33 ff1 fs0 fc0 sc0 ls0 ws0">X3=X2;</div><div class="t m0 x9 h4 ya ff1 fs0 fc0 sc0 ls0 ws0">X4= -X1;</div><div class="t m0 x9 h4 yb ff1 fs0 fc0 sc0 ls0 ws0">p=2*i-1;q=2*j1-1; p1=p+1;q1=q+1;</div><div class="t m0 x9 h4 yc ff1 fs0 fc0 sc0 ls0 ws0">J(p,q)=X1;J(p,q1)=X2;J(p1,q)=X3;J(p1,q1)=X4;</div><div class="t m0 x9 h4 yd ff1 fs0 fc0 sc0 ls0 ws0">w(p)=DP;w(p1)=DQ;</div><div class="t m0 x4 h4 ye ff1 fs0 fc0 sc0 ls0 ws0">elseif j1==i</div><div class="t m0 x1 h4 yf ff1 fs0 fc0 sc0 ls0 ws0"><span class="_ _0"></span> X1=-C(i)-G(i,i)*e(i)-B(i,i)*f(i);</div><div class="t m0 x1 h4 y10 ff1 fs0 fc0 sc0 ls0 ws0"><span class="_ _0"></span>  X2=-D(i)+B(i,i)*e(i)-G(i,i)*f(i);</div><div class="t m0 x1 h4 y11 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"></span>  X3=D(i)+B(i,i)*e(i)-G(i,i)*f(i);</div><div class="t m0 x1 h4 y12 ff1 fs0 fc0 sc0 ls0 ws0"><span class="_ _0"></span>  X4=-C(i)+G(i,i)*e(i)+B(i,i)*f(i);</div><div class="t m0 x1 h4 y13 ff1 fs0 fc0 sc0 ls0 ws0"><span class="_ _0"></span>  p=2*i-1;q=2*j1-1; p1=p+1;q1=q+1;</div><div class="t m0 xa h4 y34 ff1 fs0 fc0 sc0 ls0 ws0">J(p,q)=X1;J(p,q1)=X2;J(p1,q)=X3;J(p1,q1)=X4;</div><div class="t m0 x1 h4 y15 ff1 fs0 fc0 sc0 ls0 ws0"> w(p)=DP;w(p1)=DQ;</div><div class="t m0 x1 h4 y16 ff1 fs0 fc0 sc0 ls0 ws0"> end</div><div class="t m0 x1 h4 y17 ff1 fs0 fc0 sc0 ls0 ws0"> end</div><div class="t m0 x1 h4 y18 ff1 fs0 fc0 sc0 ls0 ws0"> end</div><div class="t m0 x1 h4 y19 ff1 fs0 fc0 sc0 ls0 ws0"> if B2(i,6)==2</div><div class="t m0 x1 h4 y1a ff1 fs0 fc0 sc0 ls0 ws0"> DP= P(i)-P1;</div><div class="t m0 xb h4 y1b ff1 fs0 fc0 sc0 ls0 ws0">DV= V(i)^2-V2;</div><div class="t m0 xb h4 y1c ff1 fs0 fc0 sc0 ls0 ws0">for j1=1:n-1</div><div class="t m0 xc h4 y1d ff1 fs0 fc0 sc0 ls0 ws0">if j1~=i</div><div class="t m0 xd h4 y1e ff1 fs0 fc0 sc0 ls0 ws0">X1=-G(i,j1)*e(i)-B(i,j1)*f(i);</div><div class="t m0 xd h4 y1f ff1 fs0 fc0 sc0 ls0 ws0">X2=B(i,j1)*e(i)-G(i,j1)*f(i);</div><div class="t m0 xd h4 y20 ff1 fs0 fc0 sc0 ls0 ws0">X5=0;</div><div class="t m0 xd h4 y35 ff1 fs0 fc0 sc0 ls0 ws0">X6=0;</div><div class="t m0 xd h4 y22 ff1 fs0 fc0 sc0 ls0 ws0">p=2*i-1;q=2*j1-1; p1=p+1;q1=q+1;</div><div class="t m0 xd h4 y23 ff1 fs0 fc0 sc0 ls0 ws0">J(p,q)=X1;J(p,q1)=X2;J(p1,q)=X5;J(p1,q1)=X6;</div><div class="t m0 xd h4 y24 ff1 fs0 fc0 sc0 ls0 ws0">w(p)=DP;w(p1)=DV<span class="_ _3"></span>;</div><div class="t m0 x1 h4 y25 ff1 fs0 fc0 sc0 ls0 ws0"> elseif j1==i</div><div class="t m0 xd h4 y26 ff1 fs0 fc0 sc0 ls0 ws0">X1=-C(i)-G(i,i)*e(i)-B(i,i)*f(i);</div><div class="t m0 xd h4 y27 ff1 fs0 fc0 sc0 ls0 ws0">X2=-D(i)+B(i,i)*e(i)-G(i,i)*f(i); </div><div class="t m0 xd h4 y28 ff1 fs0 fc0 sc0 ls0 ws0">X5=-2*e(i);</div><div class="t m0 xd h4 y29 ff1 fs0 fc0 sc0 ls0 ws0">X6=-2*f(i);</div><div class="t m0 xd h4 y2a ff1 fs0 fc0 sc0 ls0 ws0">p=2*i-1;q=2*j1-1; p1=p+1;q1=q+1;</div><div class="t m0 xd h4 y2b ff1 fs0 fc0 sc0 ls0 ws0">J(p,q)=X1;J(p,q1)=X2;J(p1,q)=X5;J(p1,q1)=X6;</div><div class="t m0 xd h4 y2c ff1 fs0 fc0 sc0 ls0 ws0">w(p)=DP;w(p1)=DV<span class="_ _3"></span>;</div><div class="t m0 xe h4 y2d ff1 fs0 fc0 sc0 ls0 ws0">end</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>
<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/626b750c7ae5df2aa71105ae/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 xf h4 y2e ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x3 h4 y2f ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x2 h4 y30 ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x2 h3 y5 ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">迭代次数</span>');disp(ICT1);</div><div class="t m0 x2 h3 y6 ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">雅格比矩阵</span>');disp(J);</div><div class="t m0 x2 h3 y36 ff1 fs0 fc0 sc0 ls0 ws0">%<span class="ff2">求修正量</span></div><div class="t m0 x2 h3 y37 ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">右端列向量</span>');disp(w);</div><div class="t m0 x2 h4 y33 ff1 fs0 fc0 sc0 ls0 ws0">datax=-J^(-1)* w';</div><div class="t m0 x2 h3 y38 ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">修正量</span>');disp(datax);</div><div class="t m0 x2 h4 yb ff1 fs0 fc0 sc0 ls0 ws0">for i=1:n-1</div><div class="t m0 x1 h4 yc ff1 fs0 fc0 sc0 ls0 ws0"> p=2*i-1;p1=p+1;</div><div class="t m0 x3 h4 yd ff1 fs0 fc0 sc0 ls0 ws0">e(i)=e(i)+datax(p);</div><div class="t m0 x2 h4 ye ff1 fs0 fc0 sc0 ls0 ws0">f(i)=f(i)+datax(p1);</div><div class="t m0 x1 h4 yf ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x1 h3 y39 ff1 fs0 fc0 sc0 ls0 ws0"> disp('<span class="ff2">电压值</span>');disp(e);disp(f);</div><div class="t m0 x1 h4 y11 ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x1 h3 y3a ff1 fs0 fc0 sc0 ls0 ws0">% <span class="ff2">显示计算结果</span></div><div class="t m0 x1 h4 y13 ff1 fs0 fc0 sc0 ls0 ws0">for k=1:n</div><div class="t m0 x10 h4 y34 ff1 fs0 fc0 sc0 ls0 ws0">V(k)=sqrt(e(k)^2+f(k)^2);</div><div class="t m0 x10 h4 y15 ff1 fs0 fc0 sc0 ls0 ws0">shita(k)=atan(f(k)./e(k))*180/pi;</div><div class="t m0 x10 h4 y16 ff1 fs0 fc0 sc0 ls0 ws0">E(k)=e(k)+f(k)*j;</div><div class="t m0 x1 h4 y17 ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x1 h3 y3b ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">各节点的实际电压标么值<span class="_ _2"> </span></span>E<span class="_ _2"> </span><span class="ff2">为</span>(<span class="ff2">节点号从小到大排列</span>):');</div><div class="t m0 x1 h4 y19 ff1 fs0 fc0 sc0 ls0 ws0">disp(E);</div><div class="t m0 x1 h3 y3c ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">各节点的电压大小<span class="_ _2"> </span></span>V<span class="_ _2"> </span><span class="ff2">为</span>(<span class="ff2">节点号从小到大排列</span>):');</div><div class="t m0 x1 h4 y1b ff1 fs0 fc0 sc0 ls0 ws0">disp(V);</div><div class="t m0 x1 h3 y3d ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">各节点的电压相角时<span class="_ _2"> </span></span>shita<span class="_ _2"> </span><span class="ff2">为</span>(<span class="ff2">节点号从小到大排列</span>):');</div><div class="t m0 x1 h4 y1d ff1 fs0 fc0 sc0 ls0 ws0">disp(shita);</div><div class="t m0 x1 h4 y1e ff1 fs0 fc0 sc0 ls0 ws0">for p=1:n</div><div class="t m0 x1 h4 y1f ff1 fs0 fc0 sc0 ls0 ws0"> C(p)=0;</div><div class="t m0 x11 h4 y20 ff1 fs0 fc0 sc0 ls0 ws0">for q=1:n</div><div class="t m0 x11 h4 y35 ff1 fs0 fc0 sc0 ls0 ws0"> C(p)=C(p<span class="_ _0"></span>)+conj(Y(p,q))*conj(E(q));</div><div class="t m0 x11 h4 y22 ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x11 h4 y23 ff1 fs0 fc0 sc0 ls0 ws0">S(p)=E(p)*C(p);</div><div class="t m0 x1 h4 y24 ff1 fs0 fc0 sc0 ls0 ws0">end</div><div class="t m0 x1 h3 y3e ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">各节点的功率<span class="_ _2"> </span></span>S<span class="_ _2"> </span><span class="ff2">为</span>(<span class="ff2">节点号从小到大排列</span>):');</div><div class="t m0 x1 h4 y26 ff1 fs0 fc0 sc0 ls0 ws0">disp(S);</div><div class="t m0 x1 h3 y3f ff1 fs0 fc0 sc0 ls0 ws0">disp('<span class="ff2">各条支路的首端功率<span class="_ _2"> </span></span>Si<span class="_ _2"> </span><span class="ff2">为</span>(<span class="ff2">顺序同您输入<span class="_ _2"> </span></span>B1<span class="_ _2"> </span><span class="ff2">时一样</span>):');</div><div class="t m0 x1 h4 y28 ff1 fs0 fc0 sc0 ls0 ws0">for i=1:nl</div><div class="t m0 x1 h4 y29 ff1 fs0 fc0 sc0 ls0 ws0"> if B1(i,6)==0</div><div class="t m0 x1 h4 y2a ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"></span>p=B1(i,1);q=B1(i,2);</div><div class="t m0 x1 h4 y2b ff1 fs0 fc0 sc0 ls0 ws0"> else p=B1(i,2);q=B1(i,1);</div><div class="t m0 x1 h4 y2c ff1 fs0 fc0 sc0 ls0 ws0"> end</div><div class="t m0 x1 h4 y2d ff1 fs0 fc0 sc0 ls0 ws0">Si(p,q)=E(p)*(conj(E(p))*conj(B1(i,4))+(conj(E(p)*B1(i,5))-conj(E(q)))*conj(1./</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>
