Journal ArticleDOI
Novel modeling for the prediction of aged transformer oil characteristics
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TLDR
In this paper, the effect of aging on transformer oil physical, chemical and electrical properties has been studied using the international testing methods for the evaluation of transformer oil quality, and the validity and applicability of these models for future prediction of these properties have been verified by the good agreement between the measured end predicted values.About:
This article is published in Electric Power Systems Research.The article was published on 1999-07-01. It has received 40 citations till now. The article focuses on the topics: Transformer oil & Transformer.read more
Citations
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Journal ArticleDOI
Calculation of a Health Index for Oil-Immersed Transformers Rated Under 69 kV Using Fuzzy Logic
TL;DR: In this paper, a new method for calculating a health index for transformers (for operating voltage 69 kV or less) based on diagnostic tests is presented, which relies on the use of furan analysis, dissolved gas analysis, and other oil analysis results as a means of calculating the health index using fuzzy set theory.
Journal ArticleDOI
Condition Monitoring of Power Transformers - Bibliography Survey
TL;DR: In this article, the authors proposed a preventive maintenance technique for power transformers, such as DGA, thermal monitoring, partial discharge measurement, capacitance and tan delta measurements, frequency response analysis, etc., to identify problems at an early stage before a catastrophic failure occurs.
Journal ArticleDOI
Transformer oil based multi-walled carbon nanotube–hexylamine coolant with optimized electrical, thermal and rheological enhancements
Ahmad Amiri,Salim Newaz Kazi,Mehdi Shanbedi,Mohd Nashrul Mohd Zubir,Hooman Yarmand,B.T. Chew +5 more
TL;DR: In this article, a one-pot microwave assisted method, multi-walled carbon nanotubes (MWNTs) are functionalized with hexylamine (HA) based on FT-IR, TGA-DTG, Raman, EDS, CHNS/O and TEM results, the functionalization of MWNT with HA was confirmed.
Journal ArticleDOI
Dielectric characterization of power transformer oils as a diagnostic life prediction method
TL;DR: In this paper, the complex permittivity of transformer oils as a function of frequency and temperature was investigated as a quality control method, providing service life estimations of power transformations.
Journal ArticleDOI
Artificial neural networks with stepwise regression for predicting transformer oil furan content
TL;DR: In this article, a prediction model is proposed for estimation of furan content in transformer oil using oil quality parameters and dissolved gases as inputs, and stepwise regression is used to further tune the prediction model by selecting the most significant predictors.
References
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Book
Probability and Statistics for Engineers and Scientists
TL;DR: In this paper, the authors present a survey of statistical and data analysis methods for probability distributions and their application to statistical quality control problems, including one and two Sided Tests of Hypotheses.
Journal ArticleDOI
Probability and Statistics for Engineers and Scientists.
TL;DR: In this paper, the authors present a survey of statistical and data analysis methods for probability distributions and their application to statistical quality control problems, including one and two Sided Tests of Hypotheses.
Journal ArticleDOI
Forecasting Methods for Management
TL;DR: This book discusses Quantitative Forecasting Methods, the Practice of Forecasting, and Achieving Forecasting's Full Potential Index.
Journal ArticleDOI
Probability and Statistics for Engineers and Scientists
G. K. Kanji,R. Walpole,R. Myers +2 more
Book
Forecasting Methods for Management
TL;DR: The role and importance of forecasting in management: forecasting and management as mentioned in this paper is an introduction the need for, and role of, forecasting what can and cannot be predicted, an introduction to quantitative forecasting methods smoothing methods decomposition methods for time-series forecasting autoregressive/moving average (ARMA) methods simple regression methods multiple regression econometric modeling.