k12= N1/N2 ≈ U1 / U20 k13= N1/N3 ≈ U1 / U1 k23= N2/N3 ≈ U20 / U30
I1N1+I2N2+I3N3=0 I1+I2/k12+I3/k13=0 I1+I2'+I3'=0
Zk12=Rk12+jXk12= (R1+R2') + j(X1+X2') Zk13=Rk13+jXk13=(R1+R3')+j(X1+X3') Zk23'=Rk23'+jXk23'=(R2'+R3')+j(X2'+X3') R1=1/2(Rk12+Rk13-Rk23') X1=1/2 (Xk12+Xk13-Xk23') R2'=1/2(Rk12+Rk23'-Rk13) X2'=1/2 (Xk12+Xk23'-Xk13) R3'=1/2(Rk13+Rk23'-Rk12) X3'=1/2(Xk13+Xk23'-Xk12)
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