Reis, CláudiaBarbosa, F.P. Maciel2013-07-252013-07-252006Reis, C, Barboa, F.P. (2006). A comparison of voltage stability indices. In Proceedings of the Mediterranean Electrotechnical Conference - MELECON. Málaga1-4244-0087-2http://hdl.handle.net/10198/8558Voltage stability has become a very importante issue of power systems analysis. This paper discusses some important aspects related to voltage stability indices in electric power systems. Some techniques previously studied in the literature are analyzed and a comparison of the performance of several indices is presented. The effectiveness of the analyzed methods are demonstrated through numerical studies in IEEE 14 busbar test system, using several different scenarios of load increaseengconference paper