Análisis del efecto del flujo de potencia en el desempeño de la protección de distancia de líneas de transmisión.

Abstract

Currently, the electrical protection area of Ecuador is interested in analyzing short circuits in transmission lines (LT) including the operating conditions before the fault occurs. This is important due to the new short-circuit calculation methodology developed by DIgSILENT PowerFactory. This method called Complete Method, superimposes the operating conditions with those of the faults, this scenario generates more specific or closer to reality results, which allow improving the calibration of the protection zones of the remote protection devices. Nevertheless, this owner method doesn’t have many information about his functionalities. Thus, the purpose of this degree work was developed a tool in DPL language that allow perform short circuits studies on LT through simulation doth whit the IEC 60909 method and with the Complete method, in which is included variations in the transfer power by the line of interest. In addition, it is proposed the adjust of the primary protection zones the distance relay in function of the results gets with the routine. The adjustment proposal and the routine were used in the Pimampiro - Jamondino interconnection, where its usefulness to improve the performance of the distance relay was evidenced.