The quality of electrical power is an important contributing factor to the development of any country. Power quality is highly newsworthy issue as it has attained considerable attention in the last few decades due to large penetration of power electronic based loads or microprocessor based controlled loads. In order to avoid the unexpected disruptions and damage in the power system it becomes necessary to overcome power quality issues and to have reliable power performance. Mitigation of power quality event helps the power system to overcome the power quality issues to a great extent. To enhance the quality of power and to reduce the issues related to it, mitigation of power quality events is preferred. Mitigation of power quality event not only provides the control over the power related problems but also maintains it. Therefore, this paper work proposes dynamic voltage restorer (DVR) as a mitigation tool for the most common power quality problem of voltage sag. Dynamic voltage restorer (DVR) shows the effective result in sag mitigation. The DVR used in this paper uses the feed forward linear control method for the voltage sag mitigation. The voltage injection method used is the pre -sag method. This work has been performed using MATLAB Simulink. Before and after sag mitigation results are provided.
Article Details
Unique Paper ID: 150196
Publication Volume & Issue: Volume 7, Issue 4
Page(s): 25 - 33
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