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A Voltage Instability Predictor Using Local Area Measurements

Warland, Leif
Doctoral thesis
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http://hdl.handle.net/11250/249673
Date
2002
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  • Fakultet for informasjonsteknologi og elektroteknikk (Uspesifisert) [114]
Abstract
There has been a pressure to operate power systems closer to their security limits. This has partially been due to financial imperatives following the deregulating of markets. Other practical difficulties have been obtaining authorization from regulatory bodies to build power plants and transmission lines.

In this situation it is essential to monitor the system and to have tools that can predict the distance to the point of collapse (PoC). Much effort has been put into research of the phenomenon voltage collapse, and many approaches have been explored. Both dynamic and steady-state behavior have been studied thoroughly, though very few protection and control schemes have been implemented. In this dissertation the possibility of an index based on local area measurements have been explored. Voltage stability can be classified as either a transient or a long-term stability problem, and the index proposed in this dissertation is based on long-term dynamics.
Publisher
Fakultet for informasjonsteknologi, matematikk og elektroteknikk
Series
Dr. ingeniøravhandling, 0809-103X; 2002:21

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