Abstract

ORTIZ, J.S.; TAYUPANDA, J.A  and  QUINATOA, C.I. Solution to the short-term Hydrothermal Dispatch problem through nonlinear programming applied to single and multi-node systems. Revista Técnica energía [online]. 2024, vol.20, n.2, pp.11-20. ISSN 2602-8492.  https://doi.org/10.37116/revistaenergia.v20.n2.2024.609.

This research proposes two models for the problem of short-term economic dispatch of electrical power systems through nonlinear programming (NLP). The problems raised will be resolved through the cost function of the classic economic dispatch where thermal and hydraulic generation plants will be considered to obtain the electrical power generated in each of the nodes. The proposed methodology will be used for a short-term period of 24 hours with different hourly demand, as it is a short-term dispatch, it focuses on the delivery of power that covers the designated demand in each schedule, so it will not consider a deficit cost or uncertainty in the variables in any of the cases. In the first instance, the model will be developed for a single node with cascade reservoirs, while the second case will be developed in the IEEE 14-bus system. The non-linear programming shows satisfactory results, complying with the operational restrictions implemented in the mathematical model, in addition, the participation of thermal generation is considerably reduced, which represents a lower cost. The first model of a node is validated through bibliography, obtaining an operating cost of $904,990. In the same way, complying with all the designated parameters, the second model obtains a total cost of $129,800, satisfying the total demand in both cases, subject to each of its restrictions.

Keywords : economic dispatch; optimization; hydrothermal; short term; nonlinear programming.

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