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Bayesian Optimization and Hierarchical Forecasting of Non-Weather-Related Electric Power Outages

Author

Listed:
  • Olukunle O. Owolabi

    (Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA)

  • Deborah A. Sunter

    (Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
    Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA
    Department of Computer Science, Tufts University, Medford, MA 02155, USA
    Center for International Environment and Resource Policy, Tufts University, Medford, MA 02155, USA)

Abstract

Power outage prediction is important for planning electric power system response, restoration, and maintenance efforts. It is important for utility managers to understand the impact of outages on the local distribution infrastructure in order to develop appropriate maintenance and resilience measures. Power outage prediction models in literature are often limited in scope, typically tailored to model extreme weather related outage events. While these models are sufficient in predicting widespread outages from adverse weather events, they may fail to capture more frequent, non-weather related outages (NWO). In this study, we explore time series models of NWO by incorporating state-of-the-art techniques that leverage the Prophet model in Bayesian optimization and hierarchical forecasting. After defining a robust metric for NWO (non-weather outage count index, NWOCI), time series forecasting models that leverage advanced preprocessing and forecasting techniques in Kats and Prophet, respectively, were built and tested using six years of daily state- and county-level outage data in Massachusetts (MA). We develop a Prophet model with Bayesian True Parzen Estimator optimization (Prophet-TPE) using state-level outage data and a hierarchical Prophet-Bottom-Up model using county-level data. We find that these forecasting models outperform other Bayesian and hierarchical model combinations of Prophet and Seasonal Autoregressive Integrated Moving Average (SARIMA) models in predicting NWOCI at both county and state levels. Our time series trend decomposition reveals a concerning trend in the growth of NWO in MA. We conclude with a discussion of these observations and possible recommendations for mitigating NWO.

Suggested Citation

  • Olukunle O. Owolabi & Deborah A. Sunter, 2022. "Bayesian Optimization and Hierarchical Forecasting of Non-Weather-Related Electric Power Outages," Energies, MDPI, vol. 15(6), pages 1-22, March.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:6:p:1958-:d:766196
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    References listed on IDEAS

    as
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