Modernización del sistema de monitoreo y control del proceso de agua de enfriamiento de la unidad no. 2 de generación de la central hidroeléctrica Agoyán

Abstract

This project aims to modernize the cooling system of generation unit No. 2 at Agoyán Power Plant, which enhances control of the six values of cooling water flow in the unit, measured by electromagnetic sensors and signal amplifiers that enter within S7-300 PLC for its processing. In addition, the project seeks to protect low flow values that may affect the normal operation of the generation unit. Through a Human-Machine Interface HMI a local monitoring station was established; where data is displayed in real time just as it was generated by the SCADA system at operating rooms, furthermore, an event log of low flow values and tendency curves to prevent future failures. This project also presents the study of the integration between the new implemented process and the SCADA system through PLC communication module; which works under the Modbus protocol. Finally this analysis shows the changes made in the program of SCADA system through the Controcad engineering station. In order to check the correct operation of the communication module, LabView software was selected to simulate the PLC communication with the SCADA system.