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Analysis of economic impact from erosive wear by hard particles in a run-of-the-river hydroelectric plant

Author

Listed:
  • Teran, L.A.
  • Aponte, R.D.
  • Muñoz-Cubillos, J.
  • Roa, C.V.
  • Coronado, J.J.
  • Ladino, J.A.
  • Larrahondo, F.J.
  • Rodríguez, S.A.

Abstract

Small-scale hydroelectric plants, primarily run-of-the-river designs, are regularly subjected to hard particle wear and cavitation erosion due to the wide range of operating points. Depending on the severity of the operating conditions and erosion damage experienced by the machine throughout its service life, the operating companies of these facilities will be impacted. The impact will be technical, operational, logistical, and economic. A small-scale generation plant located in Amaime River in Colombia, is one such case, where severe wear occurs in the turbine components, with a consequent reduction of efficiency. In this study, the analysis of the erosion damage has been expanded and supplemented by computational fluid dynamics (CFD). From this approach, correlations between the wear rate and power output were obtained. Likewise and in conjunction with the computer estimates, a methodology to analyse the costs associated with wear based on historical data of operation was developed, creating a strategy of operation based on a stopping criterion that depends primarily on sediment concentration, turbinated flow, and wear level. The methodology optimizes the use of generators, which takes into consideration the revenue generation and the costs associated with operation and maintenance of pieces under conditions of intrinsic erosion wear in the facility.

Suggested Citation

  • Teran, L.A. & Aponte, R.D. & Muñoz-Cubillos, J. & Roa, C.V. & Coronado, J.J. & Ladino, J.A. & Larrahondo, F.J. & Rodríguez, S.A., 2016. "Analysis of economic impact from erosive wear by hard particles in a run-of-the-river hydroelectric plant," Energy, Elsevier, vol. 113(C), pages 1188-1201.
  • Handle: RePEc:eee:energy:v:113:y:2016:i:c:p:1188-1201
    DOI: 10.1016/j.energy.2016.07.072
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    References listed on IDEAS

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    1. Teran, Leonel Alveyro & Larrahondo, Francisco Jose & Rodríguez, Sara Aida, 2016. "Performance improvement of a 500-kW Francis turbine based on CFD," Renewable Energy, Elsevier, vol. 96(PA), pages 977-992.
    2. Thapa, Biraj Singh & Dahlhaug, Ole Gunnar & Thapa, Bhola, 2015. "Sediment erosion in hydro turbines and its effect on the flow around guide vanes of Francis turbine," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 1100-1113.
    3. Matt Thompson & Matt Davison & Henning Rasmussen, 2004. "Valuation and Optimal Operation of Electric Power Plants in Competitive Markets," Operations Research, INFORMS, vol. 52(4), pages 546-562, August.
    4. Christensen, Laurits R & Greene, William H, 1976. "Economies of Scale in U.S. Electric Power Generation," Journal of Political Economy, University of Chicago Press, vol. 84(4), pages 655-676, August.
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    Cited by:

    1. Leguizamón, Sebastián & Alimirzazadeh, Siamak & Jahanbakhsh, Ebrahim & Avellan, François, 2020. "Multiscale simulation of erosive wear in a prototype-scale Pelton runner," Renewable Energy, Elsevier, vol. 151(C), pages 204-215.

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