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Record W1481823548 · doi:10.1109/ceidp.1989.69573

Ramped voltage testing of transformer oil

2003· article· en· W1481823548 on OpenAlexaff
D.H. Ren, A. T. Watson

Bibliographic record

VenueConference on Electrical Insulation and Dielectric Phenomena · 2003
Typearticle
Languageen
FieldEngineering
TopicPower Transformer Diagnostics and Insulation
Canadian institutionsUniversity of Windsor
Fundersnot available
KeywordsTransformer oilVoltageTransformerSilicone oilAmplitudeMaterials scienceElectrical engineeringHigh voltageElectrodeComposite materialMechanicsAnalytical Chemistry (journal)PhysicsChemistryEngineeringOpticsChromatography

Abstract

fetched live from OpenAlex

It has been shown that, compared with dimethyl siloxane, transformer oil has similar reproducible current characteristics as a function of ramped voltage applied up to a high prebreakdown electric stress, where it obeys the equation I varies as V/sup s/. Moreover, at a very high electric stress, the displacement current component apparently reverses, which was not previously observed in silicone oil. This abnormal phenomenon is very dependent upon the conditions. From an earlier study in silicone oil, the average current response to the rising and falling voltage appears on a log-log scale with two linear portions which are sharply divided. Transformer oil has similar characteristics under similar testing conditions, but with increasing voltage amplitude of the applied ramp the slopes of the linear portions are changed. These two lines may become one if the maximum voltage and ramp rate are very high. This is true for copper and aluminum electrodes at differing gap separations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.900
Threshold uncertainty score0.743

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.028
GPT teacher head0.229
Teacher spread0.201 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations2
Published2003
Admission routes1
Has abstractyes

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