Stochastic optimization of a hydro-thermal system including network constraints
- CEPEL, Centro de Pesquisas de Energia Electrica, Rio de Janeiro (BR)
This paper describes a methodology for the optimal scheduling of hydrothermal systems taking into account multiple hydro reservoir characteristics, inflow stochasticity and transmission network represented by a linearized power flow model. The solution algorithm is based on stochastic dual dynamic programming, which decomposes the multi-stage stochastic problem into several one stage subproblems. Each subproblem corresponds to a linearized optimal power flow with additional constraints represented the hydro reservoir equations and a piecewise linear approximation of the expected future cost function. Each subproblem is solved by a customized network flow/Dual Simplex algorithm which takes advantage of the network characteristics of the hydro reservoirs and of the transmission system. The application of the methodology is illustrated in a case study with a Brazilian system comprising 44 hydroplants, 11 thermal plants, 463 buses and 834 circuits.
- OSTI ID:
- 5141380
- Journal Information:
- IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States) Vol. 7:2; ISSN 0885-8950; ISSN ITPSE
- Country of Publication:
- United States
- Language:
- English
Similar Records
A network flow model for short-term hydro-dominated hydrothermal scheduling problems
Scheduling hydro power systems with restricted operating zones and discharge ramping constraints
Related Subjects
130000 -- Hydro Energy
15 GEOTHERMAL ENERGY
150000 -- Geothermal Energy
24 POWER TRANSMISSION AND DISTRIBUTION
240200* -- Power System Networks
Transmission & Distribution-- (1990-)
ALGORITHMS
DYNAMIC PROGRAMMING
ELECTRIC POWER
ENERGY SOURCES
GEOTHERMAL POWER PLANTS
GEOTHERMAL SYSTEMS
HYDROELECTRIC POWER
HYDROELECTRIC POWER PLANTS
HYDROTHERMAL SYSTEMS
MATHEMATICAL LOGIC
OPTIMIZATION
POWER
POWER PLANTS
POWER SYSTEMS
POWER TRANSMISSION
PROGRAMMING
RENEWABLE ENERGY SOURCES
SCHEDULES
SIMULATION
SURFACE WATERS
THERMAL POWER PLANTS
WATER RESERVOIRS