A three bus system having a regulating transformer(RT) in the line 1-2 near bus 1 is shown in
figure,the complex ratio of RT IS ‘a’.The per unit(PU) in the line admittances are indicated in the
figure.The lines resistance and shunt admittances are negligible.Determine the Y bus matrix for ‘a’
=1.05<-2°, and changes in real power flow p12 and reactive power flow Q12 when ‘changes from
1.0<0° to 1.0<-3°
1. Compare and contrast between Newton-Raphson,decoupled load flow and fast decoupled load
flow method of load flow analysis.
2. Describe the algorithm for solving aload flow problem using the Newton-Raphson method