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Analysis and solution of technical constraints in the Spanish Electricity market.

E. Lobato, L. Rouco, F.M. Echavarren, G. López-Camino, F. Cacho, T. Domínguez

In the Spanish electricity market, the System Operator is on charge of analysing and solving the power system constraints that arise after the market has been cleared. An optimal solution method of power system constraints in the Spanish market must take into account: (a) connection of off-line units to solve both branch overloads and voltage constraints, (b) the solution of the postulated contingencies with a preventive criteria, (c) the adjustment of voltage control resources to reduce the number of generators that need to be connected to solve voltage constraints and (d) the coupling of the solution in the 24 hourly scenarios due to the start-up cost of non-connected units. The paper overviews the management of Spanish power system constraints in the Spanish electricity market, and quantifies the energy and economic volume implied in the solution process in the first years of operation of the Spanish market. In addition, it proposes a novel approach to optimise the solution that complies with all the required features.

Keywords: Security assessment, congestion management, electricity markets

CIGRE Session 2004. Paris, Francia. 28 Agosto - 3 Septiembre 2004.

Published: August 2004.

    Research topics:
  • *Steady-state: load flows, analysis of power system constraints, optimal load flows, voltage control ancilliary service,short-circuits, protections in transmission and ditribution networks


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