SciELO - Scientific Electronic Library Online

 
vol.83 número197Effects of joints and their waterstops on pressures spread over a slab subject to turbulent flow on a horizontal apronThermal assessment of ecological tiles in physical models of poultry houses índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


DYNA

versão impressa ISSN 0012-7353

Resumo

ROMERO-QUETE, Andrés Arturo; MOMBELLO, Enrique Esteban  e  RATTA, Giuseppe. Assessing the loss-of-insulation life of power transformers by estimating their historical loads and ambient temperature profiles using ANNs and Monte Carlo simulations. Dyna rev.fac.nac.minas [online]. 2016, vol.83, n.197, pp.104-113. ISSN 0012-7353.  http://dx.doi.org/10.15446/dyna.v83n197.48134.

A non-invasive method useful for asset management is to estimate the functional age of the insulating paper of the transformer that is caused by thermal aging. For this purpose, the hot-spot temperature profile must be assessed by means of some transformer characteristics, the historical load, ambient temperature profiles and a set of equations. In many in-service unit cases, the available data is incomplete. This paper proposes a method to deal with the lack of data. The method is based on the estimation of the historical load and ambient temperature profiles by using an artificial neural network and Monte Carlo simulations. The probable loss of total life percentage of a 30 MVA power transformer is obtained through the proposed method. Finally, the corresponding results for the assessed transformer, a model validation section and conclusions are presented.

Palavras-chave : aging; artificial neural network; asset management; Monte Carlo methods; load profile forecasting.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons