摘要：Voltage disturbance generator (VDG) is a kind of device used to generate voltage disturbancesthat may occur in the network in order to test and evaluate the performance of the powerquality devices such as Dynamic Voltage Restorer (DVR) and Uninterruptible Power Supply(UPS). Some of the voltage disturbance generator systems which are available in the literatureand commercially available are complex and expensive while the others are simple, inexpensivebut less functional. In this paper, a new transformer based, digital signal processor (DSP)controlled VDG is designed which can generate balanced and unbalanced voltage sag/swell andinterruption and can adjust the depth, duration and initiation point of disturbances. Theproposed system is composed of bidirectional switches, variable transformers and DSP basedcontroller. 3 phase 20 kVA experimental setup is developed to verify the performance of thedesigned system with linear and non-linear loads. Moreover, the performance of VDG is alsoinvestigated in the compensation tests of DVR and UPS.
关键词：Voltage Sag; Voltage Swell; Disturbance Generator.
