Figure 6. Performance of the proposed method for the IEEE 14-bus system: (a) voltage angle at the critical bus 14 (V14) as function of λ, (b) points of P-V curve stored by the proposed method, (c) number of iterations

From

Studies of Contingencies in Power Systems through a Geometric Parameterization Technique, Part I: Mathematical Modeling

Bonini Neto A., Alves D. A.

World Journal Control Science and Engineering. 2014, 2(1), 18-24