Ubicación óptima de dispositivos SVC para la mejora del margen de estabilidad de voltaje en sistemas de trasmisión considerando el índice de estabilidad de voltaje L-INDEX

Abstract

This document presents a methodology that allows for optimal placement of SVC devices based on two criteria, the cost function of the SVC device and the Lindex stability index. The first criterion allows to know the cost associated to the installation of SVC devices in the SEP bars, while the second criterion allows to know the nodes that are near the voltage collapse. To carry out a more detailed analysis, the SEP is divided into voltage control areas. The process begins with the calculation of the Jacobian of the system, then the sensitivity matrix is calculated and analyzed to break each node into main coordinates. Finally, the unsupervised learning algorithm K-means is applied to obtain weakly coupled areas. The proposed methodology is applied to the IEEE 30 and 39 node test models. To validate the methodology, the results obtained in the GAMS and DIgSILENT software are compared. It is demonstrated that the voltage profile, angular behavior and reactive power losses are substantially improved in the optimal location of SVC devices.