Dynamic Voltage Restorer and Its application at LV & MV Level
نویسنده
چکیده
Dynamic Voltage Restorer is a power electronic device that can protect sensitive loads from various disturbances in the power supply. This paper presents the study & analysis of DVR and power quality problems, voltage sag & swells with its application at Low Voltage and Medium Voltage level. DVR is always connected in series with the distribution feeder. The basic principle of a DVR is simple, by supplying a voltage of desired magnitude and frequency, the DVR restores the load voltage to a desired pre-sag voltage quantity even when source voltage is not balanced. Implementation of DVR has been proposed at both low voltage level as well as medium voltage level thus giving an opportunity to protect high power sensitive loads from voltage deflections.
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