Influences of Electromagnetic Interferences on Two-Terminal Impedance-Based Fault Location Methods

• DOI: 10.20906/sbse.v2i1.3141
• Publication Date: 2023-07-14T17:10:46Z
• Authors: Caio M. Moraes; Amauri G. Martin...; Felipe V. Lopes; Kleber M. Silva; Eduardo P. A. Ri...; Raphael L. A. Reis; Marco A. M. Rodr...; Larissa L. Silva
• Keywords: Robustness

Faults during transmission line operations are prone to occur, which reinforces the need for protection instruments ensure safety of facilities involved and, in case power outages, restore energy supply least amount time as possible. In this context, two terminal impedance-based fault locators widely used real installations, since they overcome limitations single-terminal approaches. paper, a study is carried out evaluate performance four classical location methods system subjected electromagnetic interferences (EMI). An overhead with 334 km exposed hypothetical influeence due inductive coupling 28" underground pipeline. The modeled using well-known Alternative Transients Program (ATP) and phase-to-ground faults simulated, varying resistances locations, order obtain parametric response. Results show that based on series impedances, propagation constants characteristic impedances underperform situations EMI neglected, presenting errors large 60 km. However, do not rely parameters significantly improved accuracy great robustness respectto external EMI, estimation only 5%.