A 3-bus network is given in Figure 1. The system base power is 100 MVA and the system nominal voltage is 220 kV. All the lines in the network have

thefollowing parameters (resistance, reactance and susceptance, respectively):R=0.0968 Q/km, X=0.3872 Q/km, B=8.2645 pS/km. Establish the Ybus matrix of the network for the Newton-Raphson (N-R) solution of a power flow. 2 marks (b) Determine the incidence matrix of the network necessary for the DC power flow. 0.5 marks c) Determine the line susceptance vector necessary for the DC power flow. 0.5 marks (d) Calculate power flows P1-3 and P2-3 in the network shown using the DC power flow method. 2 marks