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| Author(s): |
Leonardo Silveira de Albuquerque Martins
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação |
| Defense date: | 2009-04-12 |
| Examining board members: |
Secundino Soares Filho;
Andre Luis Marques Marcato;
Marcius Fabius Henriques de Carvalho;
Aurelio Ribeiro Leite de Oliveira;
Paulo Augusto Valente Ferreira
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| Advisor: | Secundino Soares Filho; Anibal Tavares de Azevedo |
| Abstract | |
This work presents the solution of the medium-term operation scheduling problem for hydrothermal power systems, a complex large-scale nonlinear problem, with consideration of power exchange between interconnected systems. This required the need to explicitly represent the power balance nonlinear equations, defined as the sum of hydro and thermal outputs, and net power imports such that load demand is attained. Algebraic and computational difficulties arisen by the problem formulation are overcome by the use of a nonlinear primal-dual interior-point line search filter method. A line search filter procedure is chosen for these are known to generally outperform penalty merit functions. Although the implementation proposed herein does not guarantee global convergence, it has shown to be very efficient for all numerical tests performed. In addition, the problem's block-constraint structure is exploited for means of improved computational efficiency. Results for diverse numerical tests applied to the Brazilian power system are shown. (AU) | |