Diagnóstico del estado técnico de los generadores de la Hidroeléctrica “La Península” de la Empresa Eléctrica Ambato S.A. y desarrollo del plan de mantenimiento basado en la metodología PMO

Abstract

The objective of this research is to diagnose the technical status of the generators “La Peninsula” hydroelectric plant at Empresa Eléctrica Ambato S.A. and develop the maintenance plan based on the MPO methodology (Maintenance Plan Optimization). It began with the gathering of information on the plant to later carry out an inventory and technical coding by means of ISO 14224 standard. Then, the technical evaluation and diagnosis of the equipment was carried out using ISO 10816-3 standards for the analysis of vibratory severity in machines. non-rotating, the ANSI/NETA MTS 2019 standard for thermal severity analysis and the ASTM D445-12 standard for oil analysis by viscosity variation. To carry out the analyzes, the diagnostic equipment was used as a vibration analyzer, determining the existence of backlash, misalignment and unbalance, with the thermographic camera, the increase of temperature was determined in the friction bearings with the Saybolt viscometer. A significant variation in viscosity was determined, which made possible to identify in a detailed way the condition in which generating groups 1 and 2 were found. Once the analyzes were carried out the MPO methodology was developed that allowed to improve the frequencies of the activities duplicates, identify new failure modes by assigning new tasks based on the condition. It is concluded that generator set 1 is in a critical state and generator set 2 is in a medium critical state. It is recommended to periodically inspect the condition of the generators.