Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/79943
Type: Artigo de periódico
Title: Efficient coordination of ROCOF and frequency relays for distributed generation protection by using the application region
Author: Vieira, JCM
Freitas, W
Xu, WS
Morelato, A
Abstract: This paper proposes a method for determining the coordination of the rate of change of frequency (ROCOF) and under/overfrequency relays for distributed generation protection considering islanding detection and frequency-tripping requirements. The method is based on the concept of application region, which defines a region in the trigger time versus active power imbalance space where frequency-based relays can be adjusted to satisfy the anti-islanding and frequency-tripping requirements simultaneously. This method can be used to optimally determine the instantaneous and time-delay settings of different frequency-based relays in a unified, manner. The application region can be also employed to evaluate how much an existing frequency-based protection scheme violates one of the above-mentioned requirements. In addition, it can be used to set different combinations of frequency-based relays in order to make the distributed generator frequency-based protection system as efficient as possible, since it respects the region that satisfies both requirements.
Subject: distributed generation
dynamic simulation
frequency relays
islanding detection
rate of change of frequency relays
synchronous generators
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Rights: fechado
Identifier DOI: 10.1109/TPWRD.2006.881588
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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