Title :
A network flow model for short-term hydro-dominated hydrothermal scheduling problems
Author :
Franco, P.E.C. ; Carvalho, M.F. ; Soares, S.
Author_Institution :
DEE/FT, Brasilia Univ., Brazil
fDate :
5/1/1994 12:00:00 AM
Abstract :
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
Keywords :
hydroelectric power stations; hydrothermal power systems; power system analysis computing; power system interconnection; scheduling; 440 kV; FORTRAN; SUN SPARCstation IPX; electric network; hydraulic coupling; hydro plants; interconnected Brazilian power system; linear-quadratic penalty approach; network flow model; operational constraints; short-term hydro-dominated hydrothermal scheduling; transmission limits; Couplings; Kirchhoff´s Law; Load flow; Mathematical model; Mathematical programming; Power generation; Power system interconnection; Power system modeling; Power systems; Scheduling algorithm;
Journal_Title :
Power Systems, IEEE Transactions on
