The effects of speed variations on transient stability - simulation study and mechanism analysis

Author

Zhang, H.X.

Author_Institution

Shandong Univ., Jinan, China

fYear

2004

fDate

28-30 July 2004

Firstpage

87

Lastpage

90

Abstract

Transient stability simulation is an important aspect of dynamic security assessment (DSA) in power systems. In the deregulated environment, simulation results are more sensitive to models and parameters. In this paper, based on many simulation cases, the effects of neglecting speed instantaneous changes in generator modeling on transient stability are discussed. Based on extended equal area criterion (EEAC), a method is provided to analyse the mechanism of the influences. Numerical simulation results have proved the method´s validity. Based on digital simulation and theory analysis, suggestions on choosing appropriate simplifications of speed variations in transient stability calculations are given.

Keywords

digital simulation; electricity supply industry deregulation; numerical analysis; power engineering computing; power system security; power system simulation; power system transient stability; deregulated environment; digital simulation; dynamic security assessment; extended equal area criterion; generator modeling; mechanism analysis; speed variations; theory analysis; transient stability simulation; Analytical models; Power system analysis computing; Power system dynamics; Power system modeling; Power system security; Power system simulation; Power system stability; Power system transients; Stability analysis; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, 2004. LESCOPE-04. 2004 Large Engineering systems Conference on

Print_ISBN

0-7803-8386-9

Type

conf

DOI

10.1109/LESCPE.2004.1356274

Filename

1356274