Estimation & Mitigation of Power Quality Issues in Transmission Systems with an Advanced Compensation Methods

摘要

Power quality defines the fitness of electric power to consumer devices i.e. Synchronization of the voltage frequency and phase allow electrical system to function without any significant loss in performance. In distribution system the distribution networks and sensitive industrial loads are suffering from different type of outage and interruption which can lead to loss in production and other measurable and non measurable factor. The factors that are affecting power quality are voltage sag, voltage variation, interruption, swells, brownout, distortions, Harmonic, noise, voltage spikes, voltage flicker etc. This causes some deviations in the power when compared with the normal standards. The above problems may overcome by using compensation devices (custom power devices) either compensate load i.e. correct its power factor, unbalance etc. or improve the quality of the supply voltage. In this project we are estimating all the power quality issues by different methods (FFT analysis Wavelets) & mitigating the issues by Fuzzy logic controller (FLC) DVR, SVPWM & multi level compensators, multi level DVR, statcom are done by matlab simulation.