Autor(es)

Asorza, Jesus E. Guevara ; Colqui, Jaimis S. L. ; Pissolato Filho, Jose

• Tipo de documento: Artigo Científico
• Fonte: IEEE ACCESS; v. 13, p. 11-pg., 2025-01-01.

Resumo

The rising energy consumption in transmission networks has markedly increased the burden on transmission lines, necessitating an expansion in their capacity to accommodate this surge. Consequently, high-temperature low-sag (HTLS) conductors are emerging as substitutes for conventional conductors in recent network upgrades due to their superior power transmission capabilities, especially under elevated temperatures. This paper critically analyzes the feasibility of adopting HTLS conductors over conventional counterparts for future single-circuit overhead transmission lines. Specifically, we evaluate leading HTLS conductors, such as ACCC and ZTACIR, against the conventional AAAC conductor. Following a two-stage methodology, this study presents a comprehensive electromechanical assessment of overhead transmission line. First, ampacity calculations were performed to determine the required conductor cross-sections. Subsequently, mechanical performance was evaluated to quantify structural loads and their impact on tower design. Among the HTLS conductors analyzed, the ACCC exhibited the lowest mechanical loads, indicating a better performance in terms of structural efficiency. ACCC and ZTACIR conductors significantly reduced the weight imposed on transmission towers compared to conventional AAAC, primarily due to their lower tensile forces. Furthermore, our results demonstrate that HTLS conductors present nearly identical electrical parameters across a broad frequency spectrum, conversely to the more variable behavior of conventional alternatives. Based on these results, ACCC conductors are strongly recommended for future projects, pending detailed economic analysis. (AU)

• Processo FAPESP: 21/11258-5 - Centro de Pesquisa em Engenharia para a Mobilidade Aérea do Futuro (CPE-MAF)
• Beneficiário: Domingos Alves Rade
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada
• Processo FAPESP: 21/06157-5 - Estudo estatístico das sobretensões transitórias em sistemas de potência: modelagem de linhas de transmissão de EAT e sistemas de aterramento em solos com parâmetros variáveis com a frequência
• Beneficiário: Jaimis Sajid Leon Colqui
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 23/05066-1 - Estudo das sobretensões transitórias em linhas de transmissão subterrâneas e subaquáticas considerando modelos rigorosos do cálculo dos parâmetros de retorno do solo
• Beneficiário: Jesus Enrique Guevara Asorza
• Modalidade de apoio: Bolsas no Brasil - Mestrado