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The use of voltage stability indices and proposed instability prediction to coordinate with protection systems
KTH, School of Electrical Engineering (EES), Electric Power Systems.
KTH, School of Electrical Engineering (EES), Electric Power Systems.
2009 (English)In: World Academy of Science, Engineering and Technology 53 2009, 2009Conference paper, Published paper (Other academic)
Abstract [en]

This paper proposes a methodology for mitigating the occurrence of cascading failure in stressed power systems. The methodology is essentially based on predicting voltage instability in the power system using a voltage stability index and then devising a corrective action in order to increase the voltage stability margin. The paper starts with a brief desccription of the cascading failure mechanism which is probable root cause of severe blackouts. Then, the voltage instability indices are introduced in order to evaluate stability limit. The aim of the analysis is to assure that the coordination of protection, by adopting load shedding scheme, capable of enhancing performance of the system after the major location of instability is determined. Finally, the proposed method to generate instability prediction is introduced.

Place, publisher, year, edition, pages
2009.
Keyword [en]
Blackouts, Cascading failure, Voltage stability indices, Singular Value Decomposition, Load shedding
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-51529OAI: oai:DiVA.org:kth-51529DiVA: diva2:464420
Conference
International Conference on Electric Power and Energy Systems (ICEPES 2009) in Tokyo, Japan May 27-29, 2009
Note
QC 20111214Available from: 2011-12-13 Created: 2011-12-13 Last updated: 2011-12-14Bibliographically approved

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CiteExportLink to record
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