Effects of Current Unbalance and Transmission Line Configuration on the Interference Levels Induced on Nearby Pipelines
Bibliographic record
Abstract
Abstract Recent research work on magnetic field induction from nearby high voltage power lines to adjacent pipelines has uncovered several interesting and intriguing results under unbalanced load (steady-state) conditions of a horizontal three-phase transmission line. This paper focuses on this topic, more specifically, on the analysis of the effects of current unbalance ratio and power line configuration on the induced interference levels. Three typical transmission line configurations, two horizontal and one vertical, are examined to carry out the study. Various unbalanced currents on a phase conductor are studied to reveal the minimum interference level that can be achieved for a given right-of-way network configuration. This minimum level is caused by a cancellation effect that is introduced by a specific combination of the transmission line geometrical unbalance with respect to the pipelines and the current unbalance introduced by one of the phase conductors. The effect of the soil resistivity on the interference level is also studied under different unbalanced current conditions. It is found that the interference levels decrease with a decrease of the soil resistivity for most unbalanced current conditions. However, under some unbalanced current conditions the interference levels increase with decreasing soil resistivity. Furthermore, significant variations of soil resistivity can have practically no impact on the interference levels during other unbalanced conditions. The results obtained in this paper can be used to develop designs to minimize optimally the interference level on nearby pipelines.
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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".