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- clear
- clc
- V1=1.01;
- PG=0.6;
- PSOP=0;
- QSOP2=0;
- QSOP4=0;
- ZL12=0.05+i*0.01;
- ZL13=0.04;
- ZL34=0.01;
- Zload3=2.21;
- Zload4=2.08+i*0.52;
- YL12=1/ZL12;
- YL13=1/ZL13;
- YL34=1/ZL34;
- Yload3=1/Zload3;
- Yload4=1/Zload4;
- Y=[YL12+YL13,-YL12,-YL13,0;
- -YL12,YL12,0,0;
- -YL13,0,YL13+YL34+Yload3,-YL34;
- 0,0,-YL34,YL34+Yload4];
- G12=real(Y(1,2));
- B12=imag(Y(1,2));
- G13=real(Y(1,3));
- B13=imag(Y(1,3));
- G22=real(Y(2,2));
- B22=imag(Y(2,2));
- G33=real(Y(3,3));
- B33=imag(Y(3,3));
- G34=real(Y(3,4));
- B34=imag(Y(3,4));
- G44=real(Y(4,4));
- B44=imag(Y(4,4));
- for PSOP=0.3960:0.001:2
- f=@(V2,V3,V4,theta2,theta3,theta4) [V1*V2*(G12*cos(theta2)+B12*sin(theta2))+V2*V2*G22-PG+PSOP; V1*V3*(G13*cos(theta3)+B13*sin(theta3))+V3*V3*G33+V3*V4*(G34*cos(theta3-theta4)+B34*sin(theta3-theta4)); V3*V4*(G34*cos(theta4-theta3)+B34*sin(theta4-theta3))+V4*V4*G44-PSOP; V1*V2*(G12*sin(theta2)-B12*cos(theta2))-V2*V2*B22+QSOP2; V1*V3*(G13*sin(theta3)-B13*cos(theta3))-V3*V3*B33+V3*V4*(G34*sin(theta3-theta4)-B34*cos(theta3-theta4)); V3*V4*(G34*sin(theta4-theta3)-B34*cos(theta4-theta3))-V4*V4*B44-QSOP4];
- fp=@(x) f(x(1),x(2),x(3),x(4),x(5),x(6));
- [x, fval, info] = fsolve (fp, [1.01;1.01;1.01;0;0;0]);
- disp(x);
- V2=x(1);
- V3=x(2);
- V4=x(3);
- theta2=x(4);
- theta3=x(5);
- theta4=x(6);
- if x(1)<0.98||x(2)<0.98||x(3)<0.98||x(1)>1.02||x(2)>1.02||x(3)>1.02
- disp(PSOP);
- break;
- else
- continue;
- end
- end
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