Fuzzy logic and expert knowledge in the management of the life cycle of power transformers of the cobriza mine

J. Párraga, P. Remuzgo, J. Tisza, M. Chauca

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The Cobriza underground mine, for the development of its operations, has an electric power distribution system, in which transformers submerged in 69 kV and 10 kV oil play a vital role in the reliability of the service; even more considering that a large part of them have been working for more than 38 years, it is necessary to know the status of their condition, to attend to their extensions, to optimize their life cycle and to make medium and long-term decisions to prioritize investment needs. a maintenance, relocation or replacement. For this purpose, we will use the concept called: Health Index, which consists of the combination of the relevant data obtained from the analysis of samples of the transformer insulation system and with the support of fuzzy logic using the software tool tool. Matlab, we will find a numerical value, which reflects the current health status of the transformer. The basic concepts of the fuzzy logic associated with the Health Index, the revision of the regulations in force, as well as the method of calculation are explained in a summarized form. For the application of the proposed method, we have considered real data from ten transformers that are currently working in the Cobriza mine, whose results are consistent with other similar works in this regard; In addition, an interface is designed to facilitate the application of the proposed method.

Original languageEnglish
Title of host publication17th LACCEI International Multi-Conference for Engineering, Education, and Technology
Subtitle of host publication"Industry, Innovation, and Infrastructure for Sustainable Cities and Communities", LACCEI 2019
PublisherLatin American and Caribbean Consortium of Engineering Institutions
ISBN (Electronic)9780999344361
DOIs
StatePublished - 2019
Externally publishedYes
Event17th LACCEI International Multi-Conference for Engineering, Education, and Technology, LACCEI 2019 - Montego Bay, Jamaica
Duration: 24 Jul 201926 Jul 2019

Publication series

NameProceedings of the LACCEI international Multi-conference for Engineering, Education and Technology
Volume2019-July
ISSN (Electronic)2414-6390

Conference

Conference17th LACCEI International Multi-Conference for Engineering, Education, and Technology, LACCEI 2019
CountryJamaica
CityMontego Bay
Period24/07/1926/07/19

Bibliographical note

Funding Information:
El resto del presente trabajo consiste en descripción de la lógica difusa, la aplicación práctica de la misma, diseño de una interface para facilitar su aplicación y finalmente las conclusiones como resultado del trabajo.

Funding Information:
Por lo que, se usó el TDCG (Contenido Total de Gases) que es el resultado de la suma de los siguientes niveles de contenido: Asimismo, seis y dos funciones de membresía fueron usados para estimar el Índice de Salud y Vida Remanente del transformador respectivamente. Estas funciones, se obtuvieron a partir de la normativa vigente como: IEEE C57.104, 2008; IEEE C57.106, 2006; IEEE C57.140, 2006; IEEE C57.152, 2013; CIGRE 445, 2011 y los trabajos presentados de expertos (A. Naderian, Abu Elanien y M. Arshad).

Funding Information:
transformadores. La acidez total se incrementa continuamente con los periodos de servicio extendido del transformador de aceite y pueden a la vez ser usados para indicar el estado de salud del aceite [7]. Asimismo, la deterioración del aislamiento del papel incrementa la acidez de los transformadores de aceite [8].

Funding Information:
En esta sección, se ha modelado el Sistema Experto para estimar el Índice de Salud y Vida Remanente del Transformador haciendo uso de la herramienta Simulink (Matlab R2013a), el cual es mostrado en la Fig. 12. En esta figura, se aprecia dos bloques Fuzzy Logic, uno para calcular el Índice de Salud y el otro para calcular la Vida Remanente del transformador.

Funding Information:
Se ha utilizado el método de inferencia difusa máximo-mínimo (Mamdani), para implementar la metodología e ingresar las reglas de inferencia difusa que relacionan los seis valores de entrada lingüísticos con las salidas lingüísticas que representan el Índice de Salud y Vida Remanente del Transformador.

Funding Information:
Posteriormente, se ha diseñado la interfaz GUIUMC con el programa Matlab en cual se ingresa las seis variables para el cálculo del Índice de Salud y la Vida Remanente del transformador, por lo que, se simplifica el uso del software experto de lógica difusa y se mejora la visualización de los diferentes parámetros como: las funciones de membresía de las entradas y salidas y el tipo de aislante del transformador como se muestra en la Fig. 13.

Keywords

  • Expert Knowledge
  • Fuzzy Logic
  • Live cycle
  • Maintenance
  • Power transformers

Fingerprint Dive into the research topics of 'Fuzzy logic and expert knowledge in the management of the life cycle of power transformers of the cobriza mine'. Together they form a unique fingerprint.

Cite this