Alves, D. A.da Costa, GRM2014-05-202014-05-202002-06-28Electric Power Systems Research. Lausanne: Elsevier B.V. Sa, v. 62, n. 2, p. 111-116, 2002.0378-7796http://hdl.handle.net/11449/9696This work presents an approach for geometric solution of an optimal power flow (OPF) problem for a two bus system (a slack and a PV busses). Additionally, the geometric relationship between the losses minimization and the increase of the reactive margin and, therefore, the maximum loading point, is shown. The algebraic equations for the calculation of the Lagrange multipliers and for the minimum losses value are obtained. These equations are used to validate the results obtained using an OPF program. (C) 2002 Elsevier B.V. B.V. All rights reserved.111-116engoptimal power flowloss minimizationvoltage stabilitygeometric analysisArtigo10.1016/S0378-7796(02)00032-9WOS:000176387500004Acesso restrito6566923858579760