Sensitivity analysis for the determination of characteristic curves of dead time vs transfer power applied to transmission lines

Abstract

For the transmission of large electric power blocks to large lengths, Extra High Voltage systems are a good alternative, where the elements that make up the transmission system must be designed in such a way that they offer high reliability and availability during their operation. In this context, it is necessary to perform a proper single-phase autoreclosure, determining the power transmission capacity and the reclosure dead time in the event of single-phase line-to-ground failure considering a single-phase opening and reclosing scheme and Transient Stability of the system. In this sense, this research proposes a methodology to determine characteristic curves corresponding to dead time vs active power of transfer that guarantee a maximum transfer of active power through the transmission lines, and transient stability due to failure, opening and single-phase reclosing events. These characteristic curves will make it possible to decide, from the point of view of transient stability, the most suitable value for adjusting the single-phase reclosing dead time and the dispatched power of the generation central.