Title: Nodal prices in an integrated energy system

Authors: Ana M. Quelhas, Esteban Gil, James D. McCalley

Addresses: Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA. ' Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA. ' Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA

Abstract: This paper presents a multiperiod generalised network flow model used to analyse the economic interdependencies of integrated energy systems comprising the electric network and the various fuel supply and delivery systems in a medium term operational time frame. By using a network flow programming model, one can take advantage of much faster solution procedures than standard linear programming techniques; an issue of importance considering the dimensionality of such integrated systems. The nodal prices that are obtained as a byproduct of the optimisation algorithm provide a way to analyse the economic interdependencies between the various fuel networks and the electric network. A numerical example is presented to highlight the benefits of the methodology and illustrate how nodal prices in the electric network are influenced by the dynamics of the various fuel networks.

Keywords: critical infrastructures; network flow model; integrated energy networks; nodal pricing; optimisation; electricity networks; fuel supply; fuel delivery.

DOI: 10.1504/IJCIS.2006.008498

International Journal of Critical Infrastructures, 2006 Vol.2 No.1, pp.50 - 69

Published online: 23 Dec 2005 *

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