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Forecast of Operational Downtime of the Generating Units for Sediment Cleaning in the Water Intakes: A Case of the Jirau Hydropower Plant

Author

Listed:
  • Lenio Prado

    (Systems Engineering and Information Technology Institute, Itajubá Federal University, Itajubá 37500-903, Brazil)

  • Marcelo Fonseca

    (JIRAU ENERGIA, Distrito de Jaci-Paraná, Porto Velho 76840-000, Brazil)

  • José V. Bernardes

    (Electric and Energy Systems Institute, Itajubá Federal University, Itajubá 37500-903, Brazil)

  • Mateus G. Santos

    (Systems Engineering and Information Technology Institute, Itajubá Federal University, Itajubá 37500-903, Brazil)

  • Edson C. Bortoni

    (Electric and Energy Systems Institute, Itajubá Federal University, Itajubá 37500-903, Brazil)

  • Guilherme S. Bastos

    (Systems Engineering and Information Technology Institute, Itajubá Federal University, Itajubá 37500-903, Brazil)

Abstract

Hydropower plants (HPP) in the Amazon basin suffer from issues caused by trees and sediments carried by the river. The Jirau HPP, located in the occidental Amazon basin, is directly affected by high sediment transportation. These materials accumulate in the water intakes and obstruct the trash racks installed in the intake system to prevent the entry of materials. As a result, head losses negatively impact the efficiency of the generating units and the power production capacity. The HPP operation team must monitor these losses and take action timely to clear the intakes. One of the possible actions is to stop the GU to let the sediment settle down. Therefore, intelligent methods are required to predict the downtime for sediment settling and restoring operational functionality. Thus, this work proposes a technique that utilizes hidden Markov models and Bayesian networks to predict the fifty Jirau generation units’ downtime, thereby reducing their inactive time and providing methodologies for establishing operating rules. The model is based on accurate operational data extracted from the hydropower plant, which ensures greater fidelity to the daily operational reality of the plant. The results demonstrate the model’s effectiveness and indicate the extent of the impact on downtime under varying sediment levels and when neighboring units are generating or inactive.

Suggested Citation

  • Lenio Prado & Marcelo Fonseca & José V. Bernardes & Mateus G. Santos & Edson C. Bortoni & Guilherme S. Bastos, 2023. "Forecast of Operational Downtime of the Generating Units for Sediment Cleaning in the Water Intakes: A Case of the Jirau Hydropower Plant," Energies, MDPI, vol. 16(17), pages 1-20, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6354-:d:1231269
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    References listed on IDEAS

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