Određivanje preostalog životnog veka i strategije zamene malouljnih prekidača na osnovu dinamičke analize rizika: doktorske disertacije

Abstract

The main goal of this dissertation is to estimate the remaining useful life of minimum oil circuit breakers (CB) based on data collected during their regular inspection. Using the proposed approach, CB’s with the highest risk can be identified, whose failure can cause the greatest economic consequences, but also consequences for the stability of the power system. By determining the reliability and risk of minimum oil CB’s, it is possible to see what influence has the place of installation on the aging process. In this way, a correlation is established between the values of voltage drops and other categories such as: feeder type, voltage level, year of production, number of disconnected short-circuit currents. The end result of the CB’s analysis is the possibility of knowing its aging process, classification of the state of all CB’s based on the risk of failure, knowledge of the impact of CB’s replacement on the availability of the power station, without additional investment in new equipment or labor.