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

Volume

9

Issue

2

fYear

1994

fDate

5/1/1994 12:00:00 AM

Firstpage

1016

Lastpage

1022

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;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.317642

Filename

317642