Despacho e Formação de Preços de Energia Elétrica Através de Leiloes em Sistemas Predominantemente Hidráulicos
Autores
4502 |
684,47,683
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4503 |
684,47,683
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4504 |
684,47,683
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Informações:
Publicações do PESC
The objective of this thesis is to develop a methodology for the determination of the equilibrium of an electric energy market in a hydrothermal system. Agents bid pairs of quantities and prices and the system operator dispatches the plants in order to minimize the production costs. This approach is adequate when strategic agents, owners of hydropower plants, adjust the amount of energy offered in order to influence the market price and maximize revenues. A technique known as stochastic dual dynamic programming, SDDP is used as it solves the time coupling constraints due to the use of the reservoirs. The revenue function is non-linear and non-continuous, which demands that a concave hull approximation is made enabling the use of SDDP. The methodology is based on the successive resolution of SDDP problems in which a strategic agent determines the optimum energy production of his hydro plants, assuming that the production of the remaining agents is known.
A second methodology is developed for the bidding scheme when various de hydro plants belonging to different agents are located in the same river cascade. The objective is to allow the agents to individually manage their resources, with no prejudice for the coordinated hydrothermal operation. A simulation environment is developed in order to test the use of this methodology.