Estudio de Coordinación de Protecciones para la Línea de Transmisión de Tres Terminales Manduriacu-Santo Domingo-Los Bancos a 69 kV

Abstract

With the expansion of the National Transmission System, the construction of the Manduriacu - Santo Domingo 230 kV transmission line is planned to connect the Manduriacu plant with the 230 kV bar at the Santo Domingo Substation. Initially it energizes the existing sections from Manduriacu and through the substation Los Bancos is transmitted to a level of 69 kV to Santo Domingo. In these conditions, the new line topology is formed with three terminals in which the techniques of coordination of electrical protections are applied. Based on the information obtained from the system operator, it has been modeled the line sections with structures, type of conductor and arrangement of circuits, as well as the appropriate selection and adjustments of relays to protect this line. With the use of the PowerFactory software, fault simulations are performed in the protected area including nearby bars and in different states of electrical demand, analyzing mainly the response of the differential, distance, overcurrent and low voltage protection that were properly Coordinated according to the case, for an effective protection of the transmission line that has been the object of study.