simulación y monitoreo de la operación y protección de una celda de media tensión haciendo uso del RTU RTAC SEL 3530 y RELÉ SEL-751

Abstract

The goal of this technical project is to emulate the electrical grid to a system in the distribution network security block executed in the protection laboratory of the Salesian Polytechnic University. For this simulation we proceeded to use all the typical elements present in electrical substations, namely; instrument transformers (TP and TC), circuit breakers, power transformers, protection relays and disconnectors. Two SEL 751 protection relays were used to obtain this simulation. The main relay (IED-1) will be used to measure the data and the status of the protections, while the relay (IED-2) will clear the simulated errors (instantaneous overcurrent and timed overcurrent). By means of a specific IEC 61850 communications procedure; usually used in electrical substations, the two IEDs will share information with each other. Additionally, they will have a Real-Time Automation Controller (RTAC) that will coordinate the information sent by the relay and allow optimal observation of it to the user. The programming of these attachments, both to adapt the electrical protections and to configure IEC 61850 parameters, is carried out using the programs provided by the manufacturer.