Anti-islanding protection relay for medium voltage feeder with distributed generator
Why this work is in the frame
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Bibliographic record
Abstract
Large distributed generators such as solar farms and wind farms are usually connected to medium voltage feeders. The anti-islanding protection for medium-voltage (typically up to 50 kV) DG relies on the transfer trip from transformer station. This paper presents a local anti-islanding protection relay as a backup for transfer trip in case of failures. The anti-islanding detection scheme is to short the phase or line voltage at the point of common coupling when voltage crossing zero, and then detects the current in thyristor to determine the operating mode of the DG units. This proposed scheme has been evaluated using analytical, simulation and experimental test. The results show that the proposed scheme features high performance, low cost and high neutrality. It has the ability to protect against islands operation of DG units.
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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 it