14 lines
354 B
Matlab
14 lines
354 B
Matlab
clear
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clc
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syms T11 T12 T21 T22;
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syms V1 V2;
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syms Y11 Y12 Y21 Y22;
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yP=ones(1,2);
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AngleIJ=[T11,T12;T21,T22];
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Volt=[V1,V2];
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Y=[Y11,Y12;Y21,Y22];
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t1=-diag(Y.*cos(AngleIJ')*diag(Volt)*yP');
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t2=diag(diag(Volt)*yP')*Y.*cos(AngleIJ);
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t3=(t1+t2)*diag(Volt);
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t4=-(diag(Y.*cos(AngleIJ)*Volt') -diag(Volt)*Y.*cos(AngleIJ') )*diag(diag(Volt)*yP');
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ddPdTdT=t1+t2+t3+t4 |