Determinación de escenarios operativos de referencia para la aplicación o ajuste de protecciones eléctricas :determinación de escenarios operativos de referencia para el ajuste del relé de sobrecorriente direccional a tierra (67n).

Abstract

Protections in power systems guarantee proper operation, as they ensure a reliable system by detecting and responding to adverse conditions such as ground faults. These are common disturbances that require a quick response from 67N directional ground overcurrent relays, which are essential for the protection of transmission lines. This work focuses on determining critical scenarios for the adjustment of the 67N relay, considering contingencies N-1 and N-2, for which a computational tool that integrates Python and PowerFactory is used. Based on this, the work proposes an adjustment method for the 67N relay as backup protection based on critical scenarios. The results obtained are compared with conventional adjustments, highlighting advantages and disadvantages of both approaches. The proposed methodology ensures that the relay operates efficiently and optimally in adequate times. The work is structured in three chapters: the first addresses the conceptual basis of the 67N relay; the second describes the methodology to adapt the tool and develop the adjustment; and the third presents the results obtained, conclusions and recommendations, showing the effectiveness of the proposed method compared to the traditional method.