High Voltage Power Line Transient Fault Analyzing and Modelling

The research presents a protective control structure for fast and reliable high voltage power line protection that focuses on network parameters that respond to transient faults conditions, starting from the analysis of a real event. In case of overhead power lines, approximately 80% of the total registered faults have a transient character. Therefore, the management of transient faults is important because this has a direct consequence on the energy distribution process and has a large influence on the quality of energy supplied to consumers. The development of mathematical models of wide applicability, to accurately represent the propagation of a transient fault on the 110 kV lines is possible through data analysis recorded during real life events, which constitute a clear representation in time of an actual fault. The use of these mathematical models made it possible to reduce the detection time of transient faults, ensuring benefits in terms of reducing the extent of power outages, which leads to shorter recovery times. The proposed operating algorithm of the developed control structure for transient fault detection and line protection triggering allows the improvement of distance protection reaction in the event of a transient fault, to safely overcome critical moments in network operation, aspects that recommend the proposed solution for practical implementation. DOI: 10.61416/ceai.v25i2.8603