Overvoltage Suppression in Half-Wavelength Transmission Systems using Line Surge Arresters

Autor(es)

Proenca, Felipe ; Pereira, Ronaldo F. R. ; Costa, Eduardo C. M. ; Liboni, Luisa Helena B. ; IEEE

• Tipo de documento: Artigo Científico
• Fonte: 2019 INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (XV SIPDA); v. N/A, p. 6-pg., 2019-01-01.

Resumo

The principal electric characteristics of half-wavelength transmission lines are discussed taken into account possible voltage transients resulted from asymmetric faults. Although this non-conventional technology has some attractive advances for electric power transmission through long distances, if compared to well-established HVDC and HVAC systems, important issues should be investigated concerning overvoltage levels along the transmission line due to temporary asymmetric operation conditions, e.g. phase-to-ground faults. Depending of the type of fault and location along the half-wavelength transmission line, overvoltage levels at some points through the line exceed 1.8 p.u. Thus, since some critical fault occurrences and overvoltage location are known, an alternative method for overvoltage suppression is proposed by using ZnO surge arresters directly at the phases in parallel with the tower insulators. (AU)

• Processo FAPESP: 16/16078-7 - Modelagem de para-raios de óxido metálico para simulação de transitórios eletromagnéticos em sistemas de potência
• Beneficiário: Felipe Proença de Albuquerque
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica