Método de ondas viajantes a um terminal para proteção de linhas com um pouco mais de meio comprimento de onda

• Ano de defesa: 2025
• Autor(a) principal: Mattos, Marcel Souza
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; Brasil; UFSM; Programa de Pós-Graduação em Engenharia Elétrica; Centro de Tecnologia
• Palavras-chave em Português: Linhas de transmissão não convencionais; Localização de faltas; Ondas viajantes; Proteção de distância; Domínio do tempo; Non-conventional transmission lines; Fault location; Traveling waves; Distance protection; Time domain; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/36871

This thesis proposes a new protection methodology for transmission lines slightly longer than half a wavelength, using single-ended measurements. The developed algorithm operates in the time domain and is based on the theory of traveling waves, employing the Karrenbauer modal transformation for current signal decoupling and the Teager Energy Operator to detect abrupt variations associated with faults. One of the main innovations of the proposed approach is the elimination of the fault classification stage, which is traditionally used in fault location algorithms. The methodology is capable of detecting and locating all types of faults in a unified manner, simplifying the process and increasing the robustness of the protection system. Additionally, a new philosophy of stepped protection zones is presented, compatible with one- or twoterminal measurements, without the need for communication between terminals. System modeling and algorithm validation were carried out through simulations using ATPDraw and Matlab environments. The results confirm the effectiveness of the proposed method. This work represents a relevant contribution to the protection of non-conventional AC transmission lines, offering a simple, efficient, and adaptable solution for modern power systems.