SOFT COMPUTING TECHNIQUES FOR IMPROVEMENT OF POWER QUALITY USING UPQC

Power quality improvement is become more important factor as a point of view for reliable & continuous Power System operation. Power quality may be improved by using filters and compensators. For improvement of Power Quality active power filters are used. Among which a new Synchronous-Reference Frame based control method to compensate power-quality problems through a three-phase four-wire Unified Power Quality/ Conditioner under unbalanced and distorted load conditions.One modern and very promising solution that deals with both current and voltage imperfections is the Unified Power Quality Conditioner. Here one of the most effective custom power devices UPQC is studied and analyzed. And also the control strategy to control this device is presented. The proposed control strategy is simulated in MATLAB SIMULINK & the results are presented.