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Type: Artigo de periódico
Title: Efficient Sensitivity Analysis Based Method For Calculating Load Margins To Voltage Collapse
Author: Tognete Adriana L.
Castro Carlos A.
Abstract: In this paper an efficient method for calculating load margins to voltage collapse is proposed. The method consists of computing gradual load increases based on sensitivity analysis. It is well suited for large systems, since heuristics are added to the basic algorithm in order to explore their particular characteristics. Those heuristics result in significant computational time savings. Also a special power flow method with step size optimization is used when either (a) systems become ill-conditioned (near collapsing) or (b) no real solution is found after some load increase. In case no real solution is found, the results provided by the special power flow can be used in order to define control actions (load shedding) to pull the system back into the feasible operating region. Simulations have shown that the method is very efficient, accurate and robust.
Editor: Sociedade Brasileira de Automatica, Vitoria, Brazil
Rights: aberto
Identifier DOI: 
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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