A frequency adaptive three-phase Sequence Detector Synchronization System for power systems applications
Bibliographic record
Abstract
This paper presents a Sequence Detector Synchronization System (SD-SS) capable of extracting the positive, negative and zero sequence components of a three phase signal. The system is frequency adaptive, and provides real time frequency, phase and amplitude estimations of the extracted positive sequence component. The SD-SS is able to operate over a wide range of frequencies (40-2000Hz), and in the presence of significant input signal distortion (THD as high as 100%). The SD-SS dynamically compensates for DC offsets and is capable of achieving parameter estimations in compliance with the IEEE Std.C37.118-2011 for synchrophasors. The system employs an adaptive FIR filtering technique that offers a high degree of immunity to harmonics and notch-types disturbances over the full operating range of frequencies. In the event of input transients such as balanced/unbalanced amplitude sags and swells, balanced/unbalanced phase steps and positive or negative frequency ramps (up to 700Hz/sec), the system achieves a worst case transient response time of 2 cycles of the input period. The SD-SS is implemented as a proof of concept on a Field Programmable Gate Array (FPGA) platform.
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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".