DocumentCode :
648480
Title :
Advantages of deterministic optimization in long-term hydrothermal scheduling of large-scale power systems
Author :
de Souza Zambelli, Monica ; Martins, L.S.A. ; Soares Filho, Secundino
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Campinas, Campinas, Brazil
fYear :
2013
fDate :
21-25 July 2013
Firstpage :
1
Lastpage :
5
Abstract :
This paper investigates the advantages of deterministic optimization in long-term hydrothermal scheduling of large-scale power systems. A specialized nonlinear optimization model was developed and coupled with a simulation model, taking into account expected values of inflows, in a model predictive control (MPC) approach. It is compared to stochastic dual dynamic programming (SDDP), as currently in use by the Brazilian ISO. Two distinct case studies were conducted for the monthly scheduling of the Brazilian power system on critical hydrology conditions: first, MPC is enforced to equally dispatch the thermal generation as calculated by SDDP; secondly, MPC is free to compute the optimal thermal dispatch, as well as hydro. The results show that MPC provides lower operation costs and less energy shortages due to better hydrothermal coordination and improved cascade reservoir management resulting from the deterministic optimization model, even under unfavorable scenarios.
Keywords :
dynamic programming; hydrothermal power systems; optimisation; power generation dispatch; power generation scheduling; predictive control; Brazilian ISO; Brazilian power system; MPC; SDDP; deterministic optimization; hydrothermal coordination; large-scale power systems; long-term hydrothermal scheduling; model predictive control; nonlinear optimization; optimal thermal dispatch; reservoir management; stochastic dual dynamic programming; thermal generation dispatch; Optimization; Planning; Power systems; Predictive models; Reservoirs; Stochastic processes; Hydroelectric-thermal power generation; Interior Point Method; Optimal scheduling; Predictive control; Reservoir operation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Society General Meeting (PES), 2013 IEEE
Conference_Location :
Vancouver, BC
ISSN :
1944-9925
Type :
conf
DOI :
10.1109/PESMG.2013.6673063
Filename :
6673063
Link To Document :
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