Coordinación de protecciones del sistema de distribución de la subestación Tababela y la nueva subestación el Quinche, en condiciones de operación normal y transferencia de carga

Abstract

The present project corresponds to the coordination of an electrical distribution system protections study between the Tababela substation (SE 31) and the El Quinche substation (SE 58) belonging to the Empresa Eléctrica Quito (EEQ). The coordination was carried out for six different topologies: the normal operation scenario, disconnection of the primary feeder A, disconnection of the primary feeder B, disconnection of the primary feeder C, disconnection of the primary feeder D, and the complete disconnection of the SE 58.

This work has been carried out in the CYMDIST program, which has a module called TCC, which allows the coordination of protections. The EEQ provided the necessary information for: the modeling of feeder D, which belongs to El Quinche substation and the modeling of source equivalent and load equivalent. In addition, the system modeled in the program, corrections were made in the database, prior to the coordination of protections.

A study of short-circuit currents in the maximum demand scenario was carried out and with the protection philosophy of the EEQ, the coordination of protection equipment was setting considering the relay- relay, relay- fuse, relay- recloser, recloser- recloser and recloser- fuse coordination.