dinesh_saini

dinesh_saini - On-Line Measurementof Power Quality...

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Unformatted text preview: On-Line Measurementof Power Quality Parameters Using Signal Processing Techniqueswww.powerpointpresentationon.blogspot.comDinesh Saini CONTENTS•Introduction•Types of signal processing techniques are use•MEASUREMENT SYSTEM ARCHITECTURE AND SIMULATION•FREQUENCY MEASUREMENT.•HARMONICS MEASUREMENT•MODELLING OF THE KALMAN FILTER•FLICKER MEASUREMENT•WAVELET BASED SIGNAL DECOMPOSITION TECHNIQUE •HARDWARE PLATFORM•APPLICATIONS•CONCLUSIONS INTRODUCTION •This presentation provides an overview of the time varying power quality issues in power systems.•A new signal processing techniques for real time measurement of various power quality parameters.•The definition of Power Quality cannot be limited to the characteristics of the supply power. The definition must also include the requirements of the load.•Signal processing techniques are applied for real time measurement of power quality parameters such as frequency, harmonics, flicker and disturbances. Types of signal processing techniques •(1) Digital filtering technique•2) Kalman filter technique •(3) Fast Fourier Transform and statistical method•(4) Multi-resolution signal decomposition techniquesbased on wavelet transformFREQUENCY MEASUREMENT In many power system protection and control schemes it is necessary to accurately measure and track the fundamental power frequency under sinusoidal and non-sinusoidal conditions •There are various methods 1.zero crossing methods–FFT leakage–Stationary phase changes –Least squares fitting.Freq measurement for three phasesSIMULATION RESULTS...
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This note was uploaded on 01/05/2012 for the course ECEN 212 taught by Professor Hamilton during the Fall '11 term at BYU.

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dinesh_saini - On-Line Measurementof Power Quality...

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