Alfredo del Castillo Serpa

Determinación de la confiabilidad en interruptores de potencia: caso de estudio

espanolEn este trabajo se describen algunos metodos para el analisis de la confiabilidad, tales como la tasa de falla instantanea, la razon promedio de fallas, herramientas estadisticas y otras tecnicas usadas para mejorar la vida util de equipos y componentes. A partir de estas consideraciones se analizan los interruptores de potencia instalados en una subestacion para determinar su confiabilidad e identificar los elementos con mayor incidencia y el comportamiento de falla basado en una distribucion Weibull, lo cual permite predecir las posibles fallas de dichos elementos. EnglishThis work describes some methods for the reliability analysis, such as the instantaneous failure rate, the average failure rate, statistical tools and other techniques that are used to improve the lifetime of equipment and components. The high voltage breakers installed in a substation are analyzed according to these considerations to determine their reliability and to identify the elements with high probability of failure and the fault behavior, based on Weibull distribution, that enable the possibility to predict future faults is also analyzed.

Assessment of the Reliability of Electrical Power Systems

This chapter assesses the reliability of a generation system (HL-I) using the Monte Carlo Non-Sequential (MCNS) simulation method and probabilistic indicators, as well as the static sense of a secured generation–transmission system (HL-II) on the basis of its voltage stability. For the purpose of mathematically modeling the system’s adequacy, two-state generator models are applied; and for the purpose of the load curve, a relative cumulative frequency histogram, with polynomial interpolation among classes, is used. The security assessment discussed herein is based on the continued load flow charts obtained using the Newton–Raphson method that can monitor the voltage system’s behavior to load increases. A modal analysis is also conducted in order to identify, from an overall perspective, the nodes that most contribute to loss of voltage stability in the system. Both assessments take into account the performance of the system stability limits. These limits are established on the basis of certain state variables, such as voltage range at each node, thermal limits on the transmission lines, and the reactive power limits of the generating units.

Evaluación de la confiabilidad en interruptores de potencia mediante la norma Norsok Z-013

Circuit breakers serve to connect and disconnect electric circuits under any operation conditions. Improving circuit breaker reliability is important for the...

Utilización de la lógica difusa en la gestión del mantenimiento: caso de estudio

In this paper, we approach the thematic of maintenance in high voltage breaker from another totally different optics by means of the use of fuzzy logic to make an appropriate decision; we make reference to the different rules used in the fuzzy logic as well as its memberships, inference process and the methods for the defuzzification. Finally the methodology is implemented based on Fuzzy Logic to different high voltage breakers.