Open AccessImpact on Generator Reactive Power Limits on a Static Voltage Stability
Author(s) -
E. A. Tovar-Gonzalez,
Jorge Guillermo Calderón-Guizar
Publication year - 2011
Publication title -
advances in electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 23
eISSN - 1844-7600
pISSN - 1582-7445
DOI - 10.4316/aece.2011.04017
Subject(s) - ac power , generator (circuit theory) , voltage optimisation , voltage , longitudinal static stability , volt ampere reactive , control theory (sociology) , power (physics) , stability (learning theory) , electrical engineering , computer science , engineering , physics , mechanics , control (management) , quantum mechanics , artificial intelligence , machine learning , aerodynamics
Voltage stability margin in a power system is closely related with the availability of reactive power in the system. Therefore, adequate modeling of the reactive power sources becomes an important issue in this type of studies. The Minimum Singular Value of the load flow Jacobian matrix has been commonly used as a static voltage stability index. In this paper, such index is used to assess the influence on the static voltage stability limit of modeling the generators reactive power limits by its capability curve. Simulation results on a test system indicate that modeling the reactive power limits of the generating units by the simplified Qmin/Qmax approach, commonly used by most of the load flow programs, yields optimistic values for this voltage stability index