Large power system stability enhancement using wide-area signals based hierarchical controller
Why this work is in the frame
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Bibliographic record
Abstract
A two-level hierarchical structure is proposed to improve power systems stability under severe contingencies. The solution consists of a local controller for each generator at the first level helped by a multivariable central one at the secondary level. The secondary level controller uses remote signals from all the generators to synthesize two outputs, which decouple the subsystems dynamics hence maximizing the local controllers' performances. The first level controllers use local signals exclusively to dampen local oscillations. A systematic procedure for the design of the wide-area signals based controller is given and is based on a reformulation of the multimachine power system model into a suitable and closed form. The hierarchical structure is used on a realistic power system and simulation results show that the system stability is considerably improved. A power system, unstable under the classical controllers (AVR-PSS/GOVERNOR), is rendered stable when we combine the central and local controllers' actions.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| 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 | 0.001 |
| 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