A New Method for Fault Location in Distribution Networks Based on Voltage Sag Measurements

Autor(es)

Buzo, Ricardo Fonseca ^[1] ; Barradas, Henrique Molina ^[1] ; Leao, Fabio Bertequini ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Elect Engn Dept, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: IEEE Transactions on Power Delivery; v. 36, n. 2, p. 651-662, APR 2021.
• Citações Web of Science: 0

Resumo

This paper presents an innovative method for fault location in distribution networks based on classical circuit analyses. Two synchronized and few nonsynchronized pre- and during-fault voltages are required at few buses along with the impedancematrix. A new impedance matrix manipulation procedure is proposed so that the distribution system is investigated in partitions across multiple subsystems. This procedure allows the fault location process to be performed by solving systems of determined equations, making the method more technically accessible. The fault is located by analyzing the voltage sag at the terminal-bus of each subsystem separately. The proposed method is validated on the IEEE 33-bus, 12.66 kV distribution system with/without distributed generation (DG). Simulation results show the robustness and accuracy of the method under several pre- and during-fault scenarios and measurements errors. (AU)

• Processo FAPESP: 15/21972-6 - Otimização do planejamento e da operação de sistemas de transmissão e de distribuição de energia elétrica
• Beneficiário: Rubén Augusto Romero Lázaro
• Modalidade de apoio: Auxílio à Pesquisa - Temático