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Type: Artigo de periódico
Title: Characteristics of vector surge relays for distributed synchronous generator protection
Author: Freitas, W
Xu, W
Huang, ZY
Vieira, JCM
Abstract: This work presents a detailed investigation on the performance characteristics of vector surge relays used to detect islanding of distributed synchronous generators. A detection time versus active power imbalance curve is proposed to evaluate the relay performance. Computer simulations are used to obtain the performance curves. The concept of critical active power imbalance is introduced based on these curves. Main factors affecting the performance of the relays are analyzed. The factors investigated are voltage-dependent loads, load power factor, inertia constant of the generator, generator excitation system control mode, feeder length and R/X ratio as well as multi-distributed generators. The results are a useful guideline to evaluate the effectiveness of anti-island schemes based on vector surge relays for distributed generation applications. (C) 2006 Elsevier B.V. All rights reserved.
Subject: distributed generation
islanding detection
synchronous generators
vector surge relays
vector shift relays
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.epsr.2006.02.011
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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