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Forecasting daily gas demand at the Powerstation level
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added additional gas demand forcasting models #6

Open LufunoMphaphuli opened 8 months ago

LufunoMphaphuli commented 8 months ago

Forecasting Benchmark Analysis for NGT's Gas Demand Models

Introduction

In an in-depth analysis executed on 16 March 2023, our team scrutinized the performance of the current forecasting models employed by the NGT (National Gas Transmission) network. This review incorporates data collected from January 2017 through January 2023, utilizing two primary error metrics for evaluation: Mean Absolute Error (MAE) and Mean Absolute Percentage Error (MAPE). Our findings, detailed below, aim to establish a benchmark that will guide the development of more accurate forecasting models.

Benchmarking Findings

Comparative Analysis

Two models were evaluated:

The GLM_63 model showcased superior performance with a lower MAE (5.96) and MAPE (0.12) compared to the PS_GAM model, which recorded MAE (8.53) and MAPE (0.17). These outcomes solidify the GLM_63 model as a more effective tool for forecasting gas demand within the NGT network during the specified timeframe.

Benchmarking and Model Advancement

The benchmark established by the GLM_63 model’s performance metrics now serves as the standard against which future models or improvements are measured. Any model that achieves a lower MAE and MAPE than the GLM_63 model will be considered a significant advancement in the NGT's forecasting capabilities.

Model Performance Enhancement

Enhanced Model Features

The original GLM_63 model used only three features for forecasting. Our study introduced an improved version of the GLM_63 model utilizing 34 features, significantly enhancing its forecasting accuracy. The additional features encompass a variety of demand and supply factors, showcasing the importance of a comprehensive feature set in producing accurate forecasts.

Performance Comparison

Our analysis further extends to comparing various models’ performances against the original GLM_63 model, spanning different feature sets (14 and 34 features) and model types (Huber and RANSAC).

The ensemble of GLM_63 and Huber models with 34 features demonstrated marked performance improvements, underlining the potential of ensemble techniques in capturing complex data patterns.

Feature Selection Impact

A critical insight from our analysis highlighted the impactful role of feature selection. Models enriched with a broader range of features consistently outperformed those with a limited set, emphasizing the tangible benefits of a detailed feature selection process.

Temporal Data Relevance

Incorporating temporal data, such as previous day's demand and forecast variables, played a crucial role in enhancing prediction accuracy. This underscores the significance of considering time dynamics in forecasting models.

Conclusive Insights and Future Directions

Strategic Importance of Feature Inclusion and Ensemble Models

Our comprehensive analysis underscores the crucial role of robust feature selection and the effectiveness of ensemble models in elevating forecasting precision. These strategies not only enhance model performance but also contribute significantly to the advancement of predictive analytics in energy demand forecasting.

Challenges and Considerations

Achieving an optimal balance between model complexity and practical applicability remains a paramount challenge. It is essential to maintain model interpretability to ensure stakeholders can trust and utilize the forecasts effectively.

Looking Forward

As we progress, our focus will pivot towards refining our models to better align with the NGT network's forecasting needs. Striking a balance between advanced capabilities and real-world applicability will be key to developing models that are not only technically sophisticated but also pragmatic.

This benchmark analysis represents a pivotal step in our ongoing efforts to optimize gas demand forecasting for the NGT network. By adhering to the insights and methodologies outlined in this study, we aim to continually enhance our forecasting models, thereby supporting more informed and effective decision-making processes within the NGT network.