Dynamic analysis of voltage instability in AC-DC systems

Padiyar, KR and Rao, SS (1996) Dynamic analysis of voltage instability in AC-DC systems. In: International Journal of Electrical Power & Energy Systems, 18 (1). 11-18 .

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Abstract

This paper presents the analysis and study of voltage collapse at any converter bus in A C-DC systems considering the dynamics of DC system. The problem of voltage instability is acute when HVDC links are connected to weak AC systems, the strength determined by short circuit ratio (SCR) at the converter bus. The converter control strategies are important in determining voltage instability. Small signal analysis is used to identify critical modes and evaluate the effect of AC system strength and control parameters. A sample two-terminal DC system is studied and the results compared with those obtained from static analysis. Also, the results obtained from small signal analysis are validated with nonlinear simulation.

Item Type:	Journal Article
Publication:	International Journal of Electrical Power & Energy Systems
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Keywords:	HVDC;voltage stability;eigenvalue analysis
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	26 Apr 2011 07:36
Last Modified:	26 Apr 2011 07:36
URI:	http://eprints.iisc.ac.in/id/eprint/37123

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