Study of Stress Grading Systems Working Under Fast Rise Time Pulses
Bibliographic record
Abstract
Stress grading coatings of cable and coil terminations are considerably affected by the high dV/dt present in PWM voltage source converters. As repetitive steep transients can result in the development of hot spots and enhanced electric fields in the stress grading (SG) system, premature failures of power apparatus can occur. Stress grading systems need to be improved to work under such conditions and to obtain the desired stress relief. In this work, a stress grading system that can help to control the electric stress as well as the hot spots under fast rise time pulses is studied. It is important to design and test these systems considering the real PWM waveform in which both the fast pulses and the fundamental low frequency are included. With that purpose a fast single-phase low power two-level PWM generator was used to evaluate the stress grading system. Also this generator was used to measure some of the dielectric properties of the material
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".