節(jié)點(diǎn)配電網(wǎng)潮流計(jì)算上機(jī)(共5頁(yè))

1、精選優(yōu)質(zhì)文檔-傾情為你奉上配網(wǎng)前推后代潮流計(jì)算,對(duì)給定的13節(jié)點(diǎn)配電網(wǎng)，熟悉MATLAB語(yǔ)言前腿后代潮流計(jì)算程序。13節(jié)點(diǎn)配電網(wǎng)結(jié)構(gòu)如圖1所示，支路參數(shù)見(jiàn)表1；節(jié)點(diǎn)類型及迭代初始電壓及各節(jié)點(diǎn)所接負(fù)荷見(jiàn)表2。要看懂前推回代法計(jì)算程序，報(bào)告敘述計(jì)算原理及計(jì)算流程。繪制計(jì)算流程框圖。確定前推回代支路次序（廣度優(yōu)先，或深度優(yōu)先），編寫前推回代計(jì)算輸入文件。進(jìn)行潮流計(jì)算。整理專利計(jì)算結(jié)果。內(nèi)容包括節(jié)點(diǎn)電壓；線路潮流分布，網(wǎng)損總結(jié)配電網(wǎng)潮流計(jì)算的要點(diǎn)圖1 13節(jié)點(diǎn)配電網(wǎng)結(jié)構(gòu)圖表1 系統(tǒng)支路參數(shù)支路R（.）X（.）B/2(TK) （S）123.3673.6850.0232.3562.5410.0341.14

2、51.280.0454.5245.040.0260.8561.140.0672.7452.9650.0283.7434.2510.0892.2372.7560.03104.144.6960.03111.3281.7630.011122.4362.8660.04133.5213.9660.0表2 系統(tǒng)負(fù)荷參數(shù)節(jié)點(diǎn)編號(hào)節(jié)點(diǎn)類型節(jié)點(diǎn)初始電壓（kV）Pi（MVA）Qi（MVA）1根節(jié)點(diǎn)10.4002中間節(jié)點(diǎn)10.00.03420.03013中間節(jié)點(diǎn)10.00.06930.06424中間節(jié)點(diǎn)10.00.08450.07635葉節(jié)點(diǎn)10.00.02950.02616中間節(jié)點(diǎn)10.00.04740.0409

3、7葉節(jié)點(diǎn)10.00.11760.09578中間節(jié)點(diǎn)10.00.09460.08579葉節(jié)點(diǎn)10.00.09160.085910葉節(jié)點(diǎn)10.00.02710.022911中間節(jié)點(diǎn)10.00.06960.064312葉節(jié)點(diǎn)10.00.06760.057913葉節(jié)點(diǎn)10.00.02980.0242主程序清單：PQ,FT,RX=case113(); %調(diào)用數(shù)據(jù)文件NN=size(PQ,1); %節(jié)點(diǎn)數(shù)NB=size(FT,1); %支路數(shù)數(shù)V=PQ(:,1); %V初始電壓相量maxd=1k=1while maxd0.0001 PQ2=PQ; %每一次迭代各節(jié)點(diǎn)的注入有功和無(wú)功相同 PL=0.0;fo

4、r i=1:NB kf=FT(i,1); %前推始節(jié)點(diǎn)號(hào) kt=FT(i,2); %前推終節(jié)點(diǎn)號(hào) x=(PQ2(kf,2)2+PQ2(kf,3)2)/V(kf)/V(kf); %計(jì)算沿線電流平方A PQ1(i,1)=PQ2(kf,2)+RX(i,1)*x; %計(jì)算支路首端有功/MW RX(i,1)R PQ1(i,2)=PQ2(kf,3)+RX(i,2)*x; %計(jì)算沿支路的無(wú)功損耗/Mvar RX(i,2)X PQ2(kt,2)= PQ2(kt,2)+PQ1(i,1); %用PQ1去修正支路末端節(jié)點(diǎn)的有功P 單位MW PQ2(kt,3)= PQ2(kt,3)+PQ1(i,2); %用PQ1去修

5、正支路末端節(jié)點(diǎn)的有功Q 單位Mvar PL=PL+RX(i,1)*x;endangle(1)=0.0;for i=NB:-1:1 kf=FT(i,2); %回代始節(jié)點(diǎn)號(hào) kt=FT(i,1); %回代終節(jié)點(diǎn)號(hào) dv1=(PQ1(i,1)*RX(i,1)+PQ1(i,2)*RX(i,2)/V(kf); %計(jì)算支路電壓損耗的縱分量dv1 dv2=(PQ1(i,1)*RX(i,2)-PQ1(i,2)*RX(i,1)/V(kf); %計(jì)算支路電壓損耗的橫分量dv2 V2(kt)=sqrt(V(kf)-dv1)2+dv22); %計(jì)算支路末端電壓/kV angle(kt)=angle(kf)+atand

6、(dv2/(V(kf)-dv1); %計(jì)算支路endmaxd=abs(V2(2)-V(2);V2(1)=V(1);for i=3:1:NN if abs(V2(i)-V(i)maxd; maxd=abs(V2(i)-V(i); end endmaxdk=k+1PQ1 %潮流分布 即支路首端潮流MVAV=V2 %節(jié)點(diǎn)電壓模計(jì)算結(jié)果kVangle %節(jié)點(diǎn)電壓角度計(jì)算結(jié)果單位度PL %網(wǎng)損單位MWendclear輸入文件清單：function PQ,FT,RX=case113()PQ=%節(jié)點(diǎn)電壓 有功 無(wú)功10.50010.0.60.45100.40.3100.40.28100.60.4100.40.3100.50.35100.50.4;FT=%首端 末端 43657532528221;RX=% R X 0.6 0.351.0 0.550.65 0.350.62 0.50.72 0.750.90 0.50.54 0.65;計(jì)算結(jié)果清單：k =7PQ1 = 0.4014 0.2808 0.4025 0.3014 0.5025 0.3513 0.8074 0.5857 1.5294 1.0782 0.5036 0.4020 3.5356 2.6303V =10.5000 10.1557 10.0776 10.043