Science and Education Publishing World Journal Control Science and Engineering 2328-7330 2 1 2014 12 05 Studies of Contingencies in Power Systems through a Geometric Parameterization Technique, Part II: Performance Evaluation 25 34 EN Bonini Neto A. Department of Biosystems Engineering, UNESP- S?o Paulo State University, Tup?, Brazil Alves D. A. WJCSE2014215 10.12691/wjcse-2-1-5 2014 11 26 2014 12 02 2014 12 05 In the evaluation of voltage stability where must trace P-V and Q-V curves for each contingency, static analysis methods are used, as the method of load flow and continuation power flow, it should be efficient and reliable in order to meet the requirements needed for applications in the planning and operation stage in real-time. Geometric parameterization schemes have been proposed by the authors in Part I of this paper. In this part of the paper, the results are presented graphically and in terms of numbers of iterations, showing that the proposed methods obtains all P-V curves of the IEEE-14 and 30 buses systems (loading margin of pre-contingency N-0) and all loading margin post-contingency (N-1 simple contingency and N-2 severe contingency), both with a reduced number of iterations.