Estudio de coordinación de protecciones para grupo de generación de la planta de tratamiento de aguas residuales PTAR “Esclusas”.

Abstract

The PTAR Esclusas wastewater treatment plant has three generatormotor-type generators with internal combustion, which use as fuel biogas from anaerobic digestion, for the generation of Electric Power. This document is aimed at delivering as a result the analysis and adjustments of protections for relays from the level of 69 KV in the main substation, relays of the 13.8 KV medium voltage system and for the LSI protection units (open rack switches) of the 460 V system. The protection analysis will give the response of the relays (failue clearance times) for the different scenarios proposed, which are: active cogeneration and the cogeneration scenario in island mode. This will help the process of the wastewater treatment plant to work by supplying the energy of the cogeneration it has. Managing to cover the necessary percentage of energy required by the plant and thus generate significant savings in electricity consumption.