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Ítem Proyectos de renovación ejecutados en el CTE Oriente, GEM SPATCarvajal Rojas, Ronaldo; Rivas Trujillo, Edwin RivasThis document seeks to compile and unify the resulting information (work reports, protection coordination studies, plans, photographic records, lived memories, etc.), of the two most recent renovation projects carried out by ISA Intercolombia in the CTE Oriente, through the GEM SPAT, in the substations that make up the Arauca Line and the Sierra 230kV substation, which are pioneers in updating the protection, control and supervision schemes in high-voltage substations of the STN. The registry collects their technical development, which serves as a support for verifying compliance with the design and implementation criteria established by the company according to the type of activity carried out; making a comparison between what is presented in the Secondary Engineering Manual and the work carried out during the execution of the projects. Verification of compliance with the design criteria will go hand in hand with inquiry of the programming and protection functions enabled in the new protection relays installed during the renovation, either for transformer protection in the Arauca Line and line protection in the La Sierra substation. The SPAT maintenance execution group hopes to identify the improvement opportunities resulting from these projects, in order to replicate them in future projects that will be developed with these new technologies that are setting trends in the protection, control and supervision schemes of AT substations. Additionally, the document will serve as a record and reference point for personnel who did not participate in the activities and need to know about them, either by attending availability events or by future renovations.