Medium-Term Hydrothermal Dispatch applied to Paute Integral Hydropower Complex
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Published:
Jul 29, 2021
Keywords:
Medium Term Hydrothermal Dispatch (MTHD), Energetic Dispatch Optimization, Probabilistic Dispatch, Hydropower Simulation
Main Article Content
Abstract
In Ecuador, hydropower exceeds 90% of electrical energy and the Paute Integral Hydroelectric Complex is the most important in electricity generation. Given the characteristics of the infrastructure of this complex, the Medium-Term Hydrothermal Dispatch (MTHD) is of utmost importance, since it would allow establishing operational rules that would undoubtedly affect the total cost of generation of the country's electricity system. This is why two MTHD studies are presented: the first study is probabilistic with stochastic variables for the inflows to the complex's dams and for the load to be served. This study is compared with a second model proposed by the author, which is based on finding daily optimal levels for each dam under analysis by performing a daily simulation of the system. When comparing the two models, in terms of operational rules they are entirely coincident; however, in terms of energy produced by Paute Integral Complex, the second model, with a higher level of detail, and through effective coordination of the operation between hydropower plants in cascade, manages to make better use of the water resource and consequently a higher production of the complex.
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Zalamea, J. (2021). Medium-Term Hydrothermal Dispatch applied to Paute Integral Hydropower Complex. Revista Técnica "energía", 18(1), PP. 95–105. https://doi.org/10.37116/revistaenergia.v18.n1.2021.465
Section
PRODUCCIÓN Y USO DE LA ENERGÍA
Aviso de Derechos de Autor
La Revista Técnica "energía" está bajo licencia internacional Creative Commons Reconocimiento-NoComercial 4.0.
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[3] F. Beltrán, W. de Oliveira, y E. C. Finardi, «Application of Scenario Tree Reduction Via Quadratic Process to Medium-Term Hydrothermal Scheduling Problem», IEEE Trans. Power Syst., vol. 32, n.o 6, pp. 4351-4361, nov. 2017, doi: 10.1109/TPWRS.2017.2658444.
[4] CELEC EP - Hidropaute, «Informe Anual 2017», 2018. https://www.celec.gob.ec/hidropaute/images/stories/INFORMES_DE_GESTION/2017/index.html (accedido abr. 21, 2021).
[5] A. G. Ruiz y O. G. Carmona, «Cálculo del valor en riesgo (var) en el despacho hidrotérmico a mediano plazo», Sci. Tech., vol. 1, n.o 35, Art. n.o 35, ene. 2007, doi: 10.22517/23447214.5345.
[6] S. Yakowitz, «Dynamic programming applications in water resources», Water Resour. Res., vol. 18, n.o 4, pp. 673-696, 1982, doi: https://doi.org/10.1029/WR018i004p00673.
[7] J. R. Stedinger, B. F. Sule, y D. P. Loucks, «Stochastic dynamic programming models for reservoir operation optimization», Water Resour. Res., vol. 20, n.o 11, pp. 1499-1505, 1984, doi: https://doi.org/10.1029/WR020i011p01499.
[8] H. Brannlund, J. A. Bubenko, D. Sjelvgren, y N. Andersson, «Optimal Short Term Operation Planning of a Large Hydrothermal Power System Based on a Nonlinear Network Flow Concept», IEEE Trans. Power Syst., vol. 1, n.o 4, pp. 75-81, nov. 1986, doi: 10.1109/TPWRS.1986.4335019.
[9] R. A. Duncan, G. E. Seymore, D. L. Streiffert, y D. J. Engberg, «Optimal Hydrothermal Coordination for Multiple Reservoir River Systems», IEEE Trans. Power Appar. Syst., vol. PAS-104, n.o 5, pp. 1154-1159, may 1985, doi: 10.1109/TPAS.1985.323467.
[10] L. M. Kimball, K. A. Clements, P. W. Davis, y I. Nejdawi, «Multiperiod hydrothermal economic dispatch by an interior point method», Math. Probl. Eng., vol. 8, n.o 1, pp. 33-42, 2002, doi: 10.1080/10241230211378.
[11] M. Basu, «Economic environmental dispatch of hydrothermal power system», Int. J. Electr. Power Energy Syst., vol. 32, n.o 6, pp. 711-720, jul. 2010, doi: 10.1016/j.ijepes.2010.01.005.
[12] X. Yuan, B. Ji, Z. Chen, y Z. Chen, «A novel approach for economic dispatch of hydrothermal system via gravitational search algorithm», Appl. Math. Comput., vol. 247, pp. 535-546, nov. 2014, doi: 10.1016/j.amc.2014.09.017.
[13] A. Santhosh, A. M. Farid, y K. Youcef-Toumi, «Real-time economic dispatch for the supply side of the energy-water nexus», Appl. Energy, vol. 122, pp. 42-52, jun. 2014, doi: 10.1016/j.apenergy.2014.01.062.
[14] B. Bezerra, Á. Veiga, L. A. Barroso, y M. Pereira, «Stochastic Long-Term Hydrothermal Scheduling With Parameter Uncertainty in Autoregressive Streamflow Models», IEEE Trans. Power Syst., vol. 32, n.o 2, pp. 999-1006, mar. 2017, doi: 10.1109/TPWRS.2016.2572722.
[15] F. Zaman, R. A. Sarker, y T. Ray, «Solving an economic and environmental dispatch problem using evolutionary algorithm», en 2014 IEEE International Conference on Industrial Engineering and Engineering Management, dic. 2014, pp. 1367-1371, doi: 10.1109/IEEM.2014.7058862.
[16] M. Christoforidis, M. Aganagic, B. Awobamise, S. Tong, y A. F. Rahimi, «Long-term/mid-term resource optimization of a hydrodominant power system using interior point method», IEEE Trans. Power Syst., vol. 11, n.o 1, pp. 287-294, feb. 1996, doi: 10.1109/59.486108.
[17] L. Martinez y S. Soares, «Comparison between closed-loop and partial open-loop feedback control policies in long term hydrothermal scheduling», IEEE Trans. Power Syst., vol. 17, n.o 2, pp. 330-336, may 2002, doi: 10.1109/TPWRS.2002.1007900.
[18] A. L. Diniz, F. D. S. Costa, M. E. Maceira, T. N. dos Santos, L. C. B. D. Santos, y R. N. Cabral, «Short/Mid-Term Hydrothermal Dispatch and Spot Pricing for Large-Scale Systems-the Case of Brazil», en 2018 Power Systems Computation Conference (PSCC), jun. 2018, pp. 1-7, doi: 10.23919/PSCC.2018.8442897.
[19] V. H. Ferreira y G. H. C. Silva, «Natural optimization applied to medium-term hydrothermal coordination», en 2011 16th International Conference on Intelligent System Applications to Power Systems, sep. 2011, pp. 1-6, doi: 10.1109/ISAP.2011.6082235.
[20] M. BASU, «Goal-Attainment Method Based on Simulated Annealing Technique for Economic-Environmental-Dispatch of Hydrothermal Power Systems with Cascaded Reservoirs», Electr. Power Compon. Syst., vol. 32, n.o 12, pp. 1269-1286, dic. 2004, doi: 10.1080/15325000490446692.
[21] F. Cicconet y K. C. Almeida, «Moment-SOS relaxation of the medium term hydrothermal dispatch problem», Int. J. Electr. Power Energy Syst., vol. 104, pp. 124-133, ene. 2019, doi: 10.1016/j.ijepes.2018.06.004.
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