Voltage stability; Voltage security; Contingency analysis; Security margins; Loadability limits; Optimal Power Flow
Abstract :
[en] The Hellenic Interconnected System pre-sents a structural geographical imbalance between generation sites and load centers. This imbalance leads to bulk power transfers on long electrical distances leading to voltage stability problems. In order to improve the opera-tional practices aiming at improving the voltage security, an on-line Voltage Security Assessment tool has been installed at the National Control Center of the Hellenic Transmission System Operator that operates and controls the interconnected power system of Greece. This paper presents some indicative results obtained by the use of this tool. The analysis includes the investigation of the main parameters that affect the voltage stability of the system, such as the position of non-automatic taps of autotrans-formers, the network topology, and the spatial distribution of generation.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Christoforidis, George
Kabouris, John
Vournas, Costas
Van Cutsem, Thierry ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Language :
English
Title :
INVESTIGATION OF PARAMETERS AFFECTING VOLTAGE SECURITY OF THE HELLENIC INTERCONNECTED SYSTEM
Publication date :
August 2005
Event name :
15th Power System Computation Conference (PSCC)
Event organizer :
University of Liège
Event place :
Liège, Belgium
Event date :
du 22 août 2005 au 26 août 2005
Audience :
International
Main work title :
Proc. 15th Power System Computation Conference (PSCC)
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