Rediseño de una subestación eléctrica – estación terrena CNT – Guayaquil 8/10 MVA.

Abstract

The Guayaquil electrical substation located at km 23 via the coast distributes energy to the CNT EP Earth Station. The 8/10MVA 69 kV/13.8 kV line-line substation has presented inconsistencies in electrical billing, showing very high values in function to an estimated consumption, where in a diagnosis of the facilities inconsistencies are detected between the equipment shown in the one-line diagram and those that were actually installed in the substation, revealing that the substation was oversized by 90% with respect to the current load of the system, for this reason it was necessary to carry out a redesign where it is realized that it is necessary to implement a set of current transformers with a 200/100/50:5 ratio and an indoor type current transformer with a 500/300/30:5 ratio to enable the differential protection and ensure accurate current measurement, presenting an estimated budget for the project is $55,410.00.