Simulation Model of Power Quality Provider

The quality of voltage and current delivered by the power utilities has become a major concern of the modern industries. These power quality problems are voltage sag and harmonic which can cause problems to the industries ranging from malfunctioning of equipments to complete plant shutdowns. In this paper, the proposed Quality Power Provider (QPP) modeled by simulation is able to compensate the power quality disturbances such as voltage sag and harmonics in the time of normal operation as well as performs its basic function during fault condition. The QPP has a unique and novel control which is able to track and extract the most common voltage disturbances fast, dynamic and simultaneously. As an experiment to verify and validate the performance, QPP is connected at a valorous point of typical sensitive simulated distribution network and different faults were created. Experimental results are demonstrated to prove the practicality of the mitigating device. The design, modeling and simulation is done using PSS/ADEPT and PSCAD software. The overall performance results showed that the Total Harmonic Distortion with QPP is 0.47 % as compared to 13.47 %. without QPP. The proposed QPP would increase the Power Quality ‘value added’ benefits to the system. Keywords—Sag, Harmonics, QPP, VSI, PWM, Injection transformer, STATCOM, Mitigation, Simulation, Active power filter, Modulation, PSCAD.