Title :
Load and LTC modeling for voltage stability assessment in EHV network studies
Author :
Cignatta, M. ; Marannino, P. ; Merlo, M. ; Pozzi, M. ; Zanellini, F.
Author_Institution :
CESI S.p.A, Milan
Abstract :
In the last years electric systems, all around the world, experienced voltage stability problems, basically related to their exploitation, near to the limits, caused by market opportunities and progressive growth of loads with low power factor (air-conditioning, electronic devices, etc.). In this paper it is investigated the problem of modeling some specific components of the electric power system, for the simulation of its dynamic response to disturbances, with particular attention to the voltage instability and collapse phenomena. The paper focuses on the analysis of different types of load models and their influence on the voltage stability assessment of electric power systems. Also the effects of LTCs are investigated.
Keywords :
power factor; power system dynamic stability; EHV network studies; LTC modeling; electric power system; load and tap-changers models; low power factor; voltage collapse; voltage stability assessment; Consumer electronics; Load modeling; Market opportunities; Power system dynamics; Power system modeling; Power system simulation; Power system stability; Reactive power; Stability analysis; Voltage; Load Tap Changer; Primary Voltage Regulation; Secondary Voltage Regulation; Voltage Instability / Collapse;
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
DOI :
10.1109/PTC.2005.4524606
