A Novel Neuro-Fuzzy Based Direct Power Control of a DFIG based Wind Farm Incorporated with Distance Protection Scheme and LVRT Capability
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Bibliographic record
Abstract
This paper presents an adaptive neuro-fuzzy based direct power control (DPC) scheme of a grid connected doubly fed induction generator (DFIG) based wind energy conversion system incorporated with distance protection and low voltage ride-through (LVRT) capabilities. The DFIG based Wind Energy Conversion Systems (WECS) are seriously affected by grid side disturbance as it is directly connected to the grid. Due to the inherent nonlinearities of DFIG-WECS the conventional PI based control is not suitable to handle the grid disturbances. Therefore, an adaptive neuro-fuzzy interface system (ANFIS) based DPC scheme is developed to handle the grid side disturbance and achieve LVRT capabilities through rotor side converter control based on the errors between the actual real and reactive powers of stator with their corresponding reference values. A hybrid training algorithm is also developed to optimize the ANFIS parameters. Additionally, in order to provide adequate protection for the wind farm during impending faults both on the grid side and within the wind farm, a distance protection scheme compliant with LVRT standards is also developed. The proposed DPC scheme as well as the distance protection scheme are simulated using MATLAB-Simulink and ETAP software respectively under different grid faults and wind speed variations. The developed distance relay is found capable of protecting the wind farm against any grid fault and/or wind speed variations.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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