Active control of natural gas pipeline system based on Box-Jenkins method
Why this work is in the frame
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Bibliographic record
Abstract
As the integrated energy network continues to develop, uncertainties in both the upstream and downstream components of the natural gas system have increased significantly. This has led to higher demands on the intelligence of natural gas pipeline system, which must be capable of independently analyzing market fluctuations and proactively adjusting operational plans. However, the non-convexity and strong nonlinearity of the partial differential equations (PDEs) governing transient natural gas flow pose challenges. Traditional methods are inadequate for meeting the fast control requirements of modern intelligent regulation. This paper proposes an active control method for natural gas pipeline systems (NGPS), including state inversion control and the linear quadratic regulator (LQR) control algorithm, which is established using the Box-Jenkins approach to enable rapid control under transient conditions. Several case studies conducted on a natural gas pipeline system demonstrate the effectiveness of the proposed method. The results show that transient operation schemes for the compressor can be formulated under fluctuating outlet flow conditions, effectively maintaining the delivery pressure close to the contractual pressure. The control error is less than 0.5%, fully meeting the actual field requirements, and compared to constant-pressure delivery, it reduces energy consumption by 8,342 kWh per day. By strictly adhering to the characteristic equations of transient natural gas flow, the proposed method avoids the need to solve large-scale optimization problems. Additionally, it contributes to energy-saving and emission reduction objectives in natural gas pipeline operations, providing technical support for the intelligent regulation of future natural gas pipeline system.
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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 | 0.001 | 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 | 0.000 |
| 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