Bibliographic record
Abstract
The Nelson River HVDC system currently consists of two thyristor-based bipole schemes: Bipoles I and II. Pole 1 in Bipole I was found to have suffered from a serious thyristor leakage problem (TLP) after 20 years in service. In order to understand, evaluate, and resolve this problem, a comprehensive study was conducted in 2013 at Manitoba Hydro, which involved thyristor voltage monitoring, leakage current measurements, and simulations. The study revealed that the majority of thyristors in two of the three valve groups at both ends were leaky (i.e., exhibiting increased leakage currents) to various degrees. This paper provides an overview of the TLP and related investigation. The effects and symptoms/behaviors of the leaky thyristors are illustrated with the study results for one of the worst valves at each end. The failure mechanism of the leaky thyristors is also discussed. This paper should provide a clear understanding of the TLP from the user's perspective. A question, however, remains with regard to the root-cause of the TLP. Further research is required to answer this question.
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 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 | 0.001 | 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) | 0.001 | 0.001 |
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".