部分代码：
P_load=load('load.txt');
P_load=P_load/100000;
B=EV_load(958); %每个节点接入1250辆电动汽车 接入位置8 14 29
for i=1:24
[Ploss,V]=IEEE33(B(i),P_load(i));
Ploss_after(i)=Ploss;
V_after(i,:)=V;
end
for i=1:24
[Ploss,V]=test(P_load(i));
Ploss_before(i)=Ploss;
V_before(i,:)=V;
end
figure(2)
plot( Ploss_before,'-*b');
hold on
plot(Ploss_after,'-or');
title('电动汽车负荷接入IEEE33节点前后网损变化')
legend('接入IEEE33节点前','接入IEEE33节点后')
xlabel('时刻/h');
ylabel('网损/kW');
flage=21; %选择不同时刻的电压值结果分析
figure(3)
plot(V_before(flage,:),'-*b');
hold on
plot(V_after(flage,:),'-or');
title('电动汽车负荷接入IEEE33节点前后电压标幺值变化')
legend('接入IEEE33节点前','接入IEEE33节点后')
xlabel('IEEE33节点序号');
ylabel('电压值（p.u.）');
%%仅展示网络接入负荷后节点电压标幺值立体图
mat=[
1 1.05000000000000 1.04287213168280 1.03169476111295 1.00933052579888 0.986588989940550 0.930099486115464 0.916438721027518 0.895831501848261 0.873414785957754 0.851582632475910 0.848222112820388 0.842037969352419 0.814222862940509 0.802601644026615 0.800214111000742 0.797918584131601 0.794450691868547 0.793431728688100 1.04214248294003 1.03719899791252 1.03622491676297 1.03534319162764 1.02674003550633 1.01750832841635 1.01290362222376 0.925114836418328 0.918338473902728 0.888525212117183 0.866633891958827 0.861169674354207 0.854688745152745 0.853260335876191 0.852817366598989
2 1.05000000000000 1.04327379649932 1.03275041589090 1.01152666533507 0.989930679315199 0.936322185194837 0.923284586007907 0.903519397502969 0.882254659872347 0.861517461585151 0.858318393456601 0.852423306122978 0.825869347967295 0.814751859311421 0.812580142241106 0.810491548012139 0.807339778354964 0.806412814457547 1.04259942412313 1.03803098101468 1.03713085515260 1.03631611684994 1.02817795912955 1.01965981816354 1.01541181115548 0.931623724267564 0.925231563378492 0.897135397068056 0.876487282028976 0.871495580460494 0.865577095209478 0.864272751166238 0.863868276192813
3 1.05000000000000 1.04354561060273 1.03346414591244 1.01304896305934 0.992269848138107 0.940711318275734 0.928145598671718 0.909039667693129 0.888609292605677 0.868673626944631 0.865594397320487 0.859916491132736 0.834329039083645 0.823607515784075 0.821565466087650 0.819601147201922 0.816639244355416 0.815767511099764 1.04290418689065 1.03855925385222 1.03770319786607 1.03692837345643 1.02911925197616 1.02102582506147 1.01699006118021 0.936205993875666 0.930074378614049 0.903138052681494 0.883334001000980 0.878623343035751 0.873040123225188 0.871809742329208 0.871428216894812
4 1.05000000000000 1.04369849201017 1.03386541264842 1.01392291186583 0.993623521332753 0.943266949604992 0.930990521207399 0.912297939150015 0.892363208133327 0.872907419753337 0.869900654268426 0.864355200434629 0.839365207535630 0.828892545502355 0.826916005665145 0.825014438373173 0.822148474711129 0.821304623007772 1.04307341822847
