期刊名称：International Journal of Electrical, Electronics and Computer Engineering
电子版ISSN：2277-2626
出版年度：2013
期号：827
页码：9
出版社：RESEARCH TREND
摘要：ABSTRACT: Power quality disturbances like sag, swells, transients, harmonics &flicker are not new to our researchers as such it still prevails in modern power industry. This paper describes the technique of reducing the voltage sag and interruptions in a distribution system by controlling DSTATCOM using wavelet based denoising controller (multi-resolution analysis).Wavelet transform has received greater attention in power quality as this is well suited for analyzing certain types of transient waveforms. The proposed methodology states that the distorted signal is first identified, decomposed and then reconstructed using wavelet transform. These signals are then fed to two level voltage source inverter (VSI) (designed as DSTATCOM) to produce refined signal. Modeling and Simulation of the above mentioned DSTATCOM controller with necessary block diagrams are presented and implemented along with the necessary equations in the MATLAB simulink using the simpower systems tool boxes. Conclusions are based on the simulation results.
