A network flow model for short-term hydro-dominated hydrothermal scheduling problems

This paper is concerned with the short-term hydrothermal scheduling (STHS) of hydro-dominated power systems. The problem's formulation includes the representation of operational constraints such as the hydraulic coupling between hydro plants in cascade and the transmission limits in the electri...

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Bibliographic Details
Published in:IEEE transactions on power systems 1994-05, Vol.9 (2), p.1016-1022
Main Authors: Franco, P.E.C., Carvalho, M.F., Soares, S.
Format: Article
Language:English
Subjects:
240100 - Power Systems- (1990-)
Applied sciences
Couplings
Electrical engineering. Electrical power engineering
Electrical power engineering
ENERGY SYSTEMS
Exact sciences and technology
HYDROELECTRIC POWER PLANTS
INTERCONNECTED POWER SYSTEMS
Kirchhoff's Law
Load flow
Mathematical model
Mathematical programming
OPERATION
Operation. Load control. Reliability
OPTIMIZATION
Power generation
Power networks and lines
POWER PLANTS
Power system interconnection
Power system modeling
POWER SYSTEMS
POWER TRANSMISSION AND DISTRIBUTION
Scheduling algorithm
THERMAL POWER PLANTS
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Summary:This paper is concerned with the short-term hydrothermal scheduling (STHS) of hydro-dominated power systems. The problem's formulation includes the representation of operational constraints such as the hydraulic coupling between hydro plants in cascade and the transmission limits in the electric network. In order to allow the problem's decomposition into hydraulic and electric subproblems, a linear-quadratic penalty approach is applied to enforce the coupling between hydro and electric variables. As a result, the problem's natural network flow structure is fully exploited through special-purposed network flow algorithms. The technique has been implemented in FORTRAN in a SUN SPARCstation IPX and tested in a 440 kV subsystem of the main interconnected Brazilian power system.< >
ISSN:0885-8950
1558-0679
DOI:10.1109/59.317642