Modernización del control del sistema de limpieza de las rejillas de la toma de carga de la Central Hidroeléctrica Agoyán.

Abstract

This document presents some aspects of the modernization cleaning system control for trash rack in the reservoir intake of the Agoyán Hydroelectric Power Plant. This system is in charge of maintaining the trash racks, a screen of comprising metal located in the waterway at the intake, without obstructions to allow the free passage of water in the intake. The trash racks cleaning system consists of two subsystems: the rack cleaning and the obstruction detection systems. The former collects the foreign materials stuck in the racks, while the later detects, i.e. sends a signal, if grid is obstructed or if an overflow exists. The modernization of these systems enable an automatic control since now it is able to detect when the cleaning system should be activated. This improves the operation of the whole system since the cleaning only takes place in the racks where an important load loss is detected. Finally, for the communication between the two subsystems, a WLAN wireless network was implemented.