Power quality has become a major concern of the modern industries in the present era. Voltage sags/swells are considered as the most significant power quality problems because of increasing complexity in the power system. To overcome these problems, Custom Power Devices (CPD) is connected closer to the load end. One of those devices is Dynamic Voltage Restorer (DVR) which is a series connected most efficient and effective modern CPD used in power distribution network. The main function of the DVR is to monitor the load voltage constantly and if any sag or swell occurs, it can quickly mitigate by injecting the balance (or excess) voltage to the load voltage. The primary advantage of the DVR is keeping the users always on-line with high quality constant voltage to maintain the continuity of production.

Dynamic Voltage Restorer, Custom Power Device, Voltage Sag, Swell, Distribution Transform

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