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Three Winding Transformer Evaluation of K-Factor Value and Harmonic Distortion

2023· article· en· W4388016288 on OpenAlexaff
Langlang Gumilar, Ian Jack Permana

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicPower Quality and Harmonics
Canadian institutions123 Certification (Canada)
Fundersnot available
KeywordsTotal harmonic distortionTHD analyzerHarmonicsTransformerPower factorEnergy efficient transformerElectrical engineeringControl theory (sociology)PhysicsElectronic engineeringAcousticsNonlinear distortionDistribution transformerEngineeringComputer scienceVoltageAmplifier

Abstract

fetched live from OpenAlex

It is impossible to completely eliminate harmonics from the electric power supply. Harmonic distortion waves are produced by the nonlinear load. On the other hand, due to the fact that the harmonic current flows through the transformer winding, the presence of harmonics causes an abnormally high increase in temperature inside the transformer. It is possible to utilise the rise in the K-factor value of the transformer as a representation of the increase in heat. In order to reduce harmonic distortion and the transformer K-factor value, the author of this article proposes using a detuned reactor in conjunction with a shunt harmonic passive filter. Three-winding transformer is the one that is being utilised. To compare the reduction in harmonic distortion and the K-factor value, many situations are required. The first case study involves harmonics and assumes that no harmonic filter has been installed. In the second scenario, a shunt harmonic passive filter is used to cut down on the amount of harmonic distortion as well as the K-factor value. The third option combines a detuned reactor with a shunt harmonic passive filter in order to accomplish the same goal as the second scenario. The values of THD_I and THD_V for the first scenario are 20.62 percent and 27.83 percent, respectively. while the value of the K-factor is 4.46. The THD_I and THD_V values for the second scenario are, respectively, 10.66% and 15.39%. In the meanwhile, the value of the K factor is 2.92. Regarding the second scenario, the THD_I and THD_V values come in at 2.82% and 4.91%, respectively. while the value of the K-factor is 1.13. When compared to the other scenarios, the third one achieves the greatest results in terms of reducing harmonic distortion and K-factor to the lowest possible levels. The shunt harmonic passive filter's effectiveness may be enhanced by the presence of a detuned reactor.

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 score0.651
Threshold uncertainty score0.238

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
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 head0.086
GPT teacher head0.295
Teacher spread0.209 · 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

Citations0
Published2023
Admission routes1
Has abstractyes

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