Repeat Problem 6.38 except use an initial voltage guess of \(0.25 \angle 0^{\circ}\).

Problem 6.38

A generator bus (with a 1.0 per unit voltage) supplies a \(180 \mathrm{MW}, 60 \mathrm{Mvar}\) load through a lossless transmission line with per unit (100 MVA base) impedance of \(j 0.1 \) and no line charging. Starting with an initial voltage guess of \(1.0 / 0^{\circ}\), iterate until converged using the Newton-Raphson power flow method. For convergence criteria, use a maximum power flow mismatch of 0.1 MVA.