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Master's Dissertation
DOI
10.11606/D.18.2007.tde-07052007-134218
Document
Author
Full name
Valmir Ziolkowski
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2007
Supervisor
Committee
Silva, Ivan Nunes da (President)
Asada, Eduardo Nobuhiro
Rossi, Jose Carlos
Title in Portuguese
Estratégias experimentais para ensaios de faltas fase-terra com alta impedância em sistemas de distribuição de energia elétrica
Keywords in Portuguese
Faltas de alta impedância
Proteção de sistemas elétricos
Sistemas de distribuição
Abstract in Portuguese
O conhecimento das características experimentais das faltas de alta impedância é de suma importância para o desenvolvimento de sistemas e equipamentos voltados a detecção eficiente das mesmas em sistemas de distribuição de energia elétrica. Este trabalho apresenta um conjunto de estratégias experimentais que visam orientar passo a passo a realização de ensaios de faltas fase-terra com alta impedância, contemplando-se desde os dispositivos de proteção usados na viabilização dos experimentos até os equipamentos de oscilografias utilizados para registrar as grandezas elétricas advindas dessas situações de faltas. São ainda apresentados os resultados obtidos pelos ensaios realizados de queda de condutor energizado (lado fonte) em solo seco, queda de condutor energizado (lado fonte) em brita seca, queda de condutor energizado sobre a cruzeta e queda de condutor energizado (lado carga) em solo seco.
Title in English
Practical strategies for experiments involving high-impedance faults in electric power distribution systems
Keywords in English
Electric power distribution
High-impedance fault
System protection
Systems distribution
Abstract in English
The knowledge of experimental characteristics of high-impedance fault is of highest importance for developing both systems and equipments addressed to its efficient detection in electric power distribution systems. This work presents a set of practical strategies to guide step by step the accomplishment of experiments involving phase-ground faults with high impedance, being also contemplated from protection devices used in the experiments to oscillograph equipments dedicated to register the electric signals produced in those situations. It is still presented the results produced by fault experiments involving drop of energized cable (source side) in dry soil, drop of energized cable (source side) in dry broken stones, drop of energized cable on crossarm and drop of energized cable (load side) in dry soil.
 
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Publishing Date
2007-05-09
 
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