Planeamiento integrado de la expansión generación- transmisión utilizando los índices nodales ponderados de alivio de carga en transmisión (WTLR)

Abstract

This paper presents a model for the integrated Transmission and Generation Expansion Planning (TGEP). The main contribution of this paper lays in the use of the WTLR indexes (Weighted Transmission Loading Relief) for identifying new expansion candidates (lines and generators). The WTLR indexes are given as function of the distribution power factors and allow measuring the severity of overloads in normal conditions and under contingency (N-1 criterion). The applicability of the proposed model was tested in the IEEE RTS 24 bus power system. The TGEP was solved by means of the NSGA-II (Non-dominated Sorting Genetic Algorithm II) with the aim of minimizing costs and maximizing system security. The inclusion of generators as expansion alternatives reduces the number of necessary transmission lines in the expansion plan, especially when security criteria are taken into account.