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Mostrando ítems 11-20 de 111
Assessing Closed-Form Approximations for Underground Cable Earth Impedances
(2003)
Electromagnetic transients on underground power cables are highly influenced by the natural resistivity of the ground. Modeling earth-return impedances of a system may properly consider the resistive losses due to the ...
Modal transformation analyses for double three-phase transmission lines
(Ieee-inst Electrical Electronics Engineers IncPiscatawayEUA, 2007)
Avaliação dos limites de aplicação da teoria de linhas de transmissão para o cálculo de transitórios eletromagnéticos em cabos subterrâneos utilizando o FDTD
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICAPrograma de Pós-Graduação em Engenharia ElétricaUFMG, 2022-07-13)
This thesis evaluates the validity of transmission line theory for calculating of electromagnetic transients on underground cable systems. Using a rigorous methodology based on the solution of Maxwell's equations with the ...
1890 a 1900, una lectura de las postrimerías del siglo XIX en Costa Rica: tierra que ya no es de aldeanos y que se abre a un nuevo concepto de nación y modernidad1890 a 1900, una lectura de las postrimerías del siglo XIX en Costa Rica: tierra que ya no es de aldeanos y que se abre a un nuevo concepto de nación y modernidad
(Escuela de Lenguas Modernas, Universidad de Costa Rica, 2013)
Análisis de los aspectos técnicos de aplicación y ensayos previos a la puesta en servicio de instalaciones eléctricas subterráneas de la Empresa Eléctrica Azogues C.A.
(Universidad de Cuenca, 2022-08-05)
he correct operation of underground electrical systems throughout their
useful life depends largely on the installation, acceptance and maintenance field
tests. The tests for the acceptance and commissioning of underground ...
Location of single line-to-ground faults on distribution feeders using voltage measurements
(2006-12-01)
This paper proposes a dedicated algorithm for lation of single line-to-ground faults in distribution systems. The proposed algorithm uses voltage and current phasors measured at the substation level, voltage magnitudes ...
Contribuições ao estudo comparativo dos efeitos de descargas atmosféricas em sistemas compostos por cabos aéreos e subterrâneos a seco e a óleo
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em Engenharia ElétricaEngenhariasUFU, 2016)