Mejoramiento del perfil de voltaje en alimentadores críticos incorporando restauradores de voltaje dinámicos mediante el modelo de control de retroalimentación

Abstract

In the following article, the main existing problems in power quality will be covered, where the implementation of a DVR compensator accompanied by a feedback PLL control logic will be considered. A solution to the voltage rises and drops existing in the distribution system is presented, seeking to improve the stability of the voltage in each bar and mitigate the disturbances that may arise. The PLL (Phase Locked Loop) control can be implemented using the Matlab/Simulink software, for which each block of elements is parameterized, specifying compensation voltages required in the IEEE 34-bar system. For an analysis with greater focus on the behavior of the DVR, the inclusion of an exponential load flow is required, which simulates a voltage drop which will cause a great voltage instability in the feeders and in the most vulnerable bars of the system. The input signals of the network and output of the load will enter the DVR module, where the linear feedback control system begins to act, which determines through data feedback if the compensator requires to inject active power or absorb reactive power until obtaining desired voltage levels. The compensator will be implemented in bar 27 between the network and the load, constantly injecting power to maintain the voltages within the operating levels.