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Optimizing Conduit Hydropower Potential by Determining Pareto-Optimal Trade-Off Curve

Author

Listed:
  • Marco van Dijk

    (Department of Civil Engineering, University of Pretoria, Lynnwood Road, Hatfield, Pretoria 0002, South Africa)

  • Stefanus Johannes van Vuuren

    (Department of Civil Engineering, University of Pretoria, Lynnwood Road, Hatfield, Pretoria 0002, South Africa)

  • Giovanna Cavazzini

    (Department of Industrial Engineering, University of Padova, Via Venezia 1, 35131 Padova, Italy)

  • Chantel Monica Niebuhr

    (Department of Civil Engineering, University of Pretoria, Lynnwood Road, Hatfield, Pretoria 0002, South Africa)

  • Alberto Santolin

    (45 Engineering s.r.l., Corte delle Filande 16, 36075 Montecchio Maggiore, Italy)

Abstract

In numerous locations of bulk water supply/distribution systems, energy is dissipated by pressure-reducing devices, whereas it could be recovered by means of turbines or pumps as turbines. These pipe systems, owned and operated by municipalities, water utilities, large water-consuming industries, and mines, could be used as a source of renewable sustainable energy. However, the exploitation of these systems presents several issues related to the complexity of the operational optimization of the hydropower generation facilities and to the potential negative impact on the reliability of the system itself. We have developed a novel procedure to optimize the energy generation in such a conduit system by assessing the interrelationship of storage volumes, demand patterns, operating cycles, and electricity tariff structures. The procedure is a multi-objective genetic algorithm designed to provide a solution to maximize electricity generation and thus revenue and to minimize the risk involved in supplying the demand. A Pareto-optimal trade-off curve is set up, indicating the potential benefit (revenue) versus the reliability index (supply security). The results indicate that a Pareto-optimal trade-off curve was generated from which a solution could be selected which would improve the weekly revenue by up to 7.5%, while still providing a reliable water supply system.

Suggested Citation

  • Marco van Dijk & Stefanus Johannes van Vuuren & Giovanna Cavazzini & Chantel Monica Niebuhr & Alberto Santolin, 2022. "Optimizing Conduit Hydropower Potential by Determining Pareto-Optimal Trade-Off Curve," Sustainability, MDPI, vol. 14(13), pages 1-20, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:13:p:7876-:d:850370
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    References listed on IDEAS

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