Análisis de las condiciones funcionales para operación normal del anillo a 69 kV que dota de energía a la ciudad de Machala.

Abstract

The problems presented by the 69 kV ring that provides electric power to the city of Machala were analyzed, in addition, the information regarding the subtransmission system was collected for the corresponding modeling allowing the simulation of the topology change from a radial configuration to a ring configuration. Through the analysis carried out by means of power flow studies, contingency analysis with observation of current levels, loadability, voltage profiles, losses, among others, allowed the specification of elements and devices that require a change or repowering for the improvement and normal operation of the system. However, the adjustments and coordination of the protections are necessary for a system whose topology corresponds to a ring configuration. Protections such as the differential relays analyzed allow greater reliability, speed and selectivity in the event of line faults, acting instantaneously within the protection area or zone. The settings of the typical overcurrent protections that are currently installed correspond to a conventional analysis whose system is a radial configuration, being necessary to change these relays for directional overcurrent relays.