NDLI: Acceptability of Four Transformer Top-Oil Thermal Models

Content Provider	IEEE Xplore Digital Library
Author	Jauregui-Rivera, L. Tylavsky, D.J.
Copyright Year	1986
Abstract	Eventually, the prediction of transformer thermal performance for dynamic loading will be made using models distilled from measured data, rather than models derived from transformer heat-run tests. Which model(s) will be used for this purpose remains unclear. In this paper, we introduce metrics for measuring the acceptability of transformer thermal models. For a model to be acceptable, it must have the qualities of adequacy, accuracy, and consistency. We assess model adequacy using the metrics: prediction R² and plot of residuals against fitted values. To assess model consistency, we use the variance inflation factor (which measures multicollinearity), condition number, eigenstructure, parameter sensitivity, and the standard deviation of model parameters and predicted maximum steady-state load (SSL_max). To assess model accuracy, we use the comparison of model parameters with nominal values and error duration curves. Other metrics of interest are also introduced. In a companion paper, these metrics are applied to the four models defined in this paper and a relative ranking of the acceptability of these models is presented.
Sponsorship	IEEE Power Engineering Society
Starting Page	860
Ending Page	865
Page Count	6
File Size	237055
File Format	PDF
ISSN	08858977
Volume Number	23
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Predictive models Temperature Thermal loading Testing Statistical distributions Thermal resistance Measurement standards Steady-state Load modeling Performance evaluation transformer thermal modeling ANSI C5791 top-oil temperature transformer
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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Acceptability of Four Transformer Top-Oil Thermal Models—Part II: Comparing Metrics

1 acceptability of four transformer top-oil thermal models: pt. 1: defining metrics.

1 acceptability of four transformer top-oil thermal models: pt. 2: comparing metrics.

Transformer thermal modeling: improving reliability using data quality control

Acceptability of Three Transformer Hottest-Spot Temperature Models

Simulation models of transformer hot-spot temperature

Transformer top-oil temperature modeling and simulation

Dynamic thermal modeling of power transformers: further Development-part I

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Acceptability of Four Transformer Top-Oil Thermal Models—Part I: Defining Metrics

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