Analysis of operating modes and performance of series reactive power sources

Abstract

The structure of series reactive power hybrid source designed for current regulation in a transmission line is presented. The device also allows effective limiting of the rise rate of the short circuit current providing equipment safety. The following two variants for devices development are considered: based on a three-phase thyristor or on a single-phase bridge. Description of devices operational principles are given, and operating modes of the reactive power sources are determined. Simulation modeling of devices was carried out on the basis of Matlab/Simulink. As a result of simulation, research on the transmission current harmonic composition and the current regulating limits as a function of the passive filter contour parameters were carried out. The main parameters of the device elements and typical power of transformers for both variants of the reactive power sources were determined.