Power Quality for PG
Syllabus
OBJECTIVES:
To understand the different power quality issues to be addressed
To understand the recommended practices by various standard bodies like IEEE, IEC, etc. on voltage & frequency, harmonics
To understanding STATIC VAR Compensators
Unit I: INTRODUCTION
Power quality – Voltage quality – Overview of power quality phenomena – Classification of power quality issues – Power quality measures and standards – THD – TIF – DIN – C – message weights – Flicker factor – Transient phenomena – Occurrence of power quality problems – Power acceptability curves – IEEE guides – Standards and recommended practices.
Unit II: POWER ANALYSIS FOR AC SYSTEMS
Single phase sinusoidal, non-sinusoidal source supplying linear and non-linear loads –Three phase Balance system – Three phase unbalanced system – Three phase unbalanced and distorted source supplying on linear loads – Concept of PF – Three phase three wire – Three phase four wire system. (Click here for NPTEL Materials)
Unit III: HARMONICS
Harmonics – individual and total harmonic distortion – RMS value of a harmonic waveform – Triplex harmonics – Important harmonic introducing devices. – SMPS – Three phase power converters – Arcing devices – Saturable devices – Harmonic distortion of fluorescent lamps – Effect of power system harmonics on power system equipment and loads.
Unit IV: MODELING OF NETWORKS AND COMPONENTS UNDER NONSINUSOIDAL CONDITIONS
Transmission and distribution systems – Shunt capacitors – transformers – Electric machines – Ground systems – loads that cause power quality problems – Power quality problems created by drives and its impact on drive.
Unit V: POWER FACTOR IMPROVEMENT
Power Factor Improvement Introduction – Passive Compensation – Passive Filtering – Harmonic Resonance – Impedance Scan Analysis – Active Power Factor Corrected Single Phase Front End – Control Methods for Single Phase APFC – Three Phase APFC and Control Techniques – PFC based on Bilateral Single Phase and Three Phase Converter.
OUTCOMES: After completion of this course, the student will be able to:
Acquire knowledge about the harmonics, harmonic introducing devices and effect of harmonics on system equipment and loads
Analyze Polyphase AC systems with linear and nonlinear loads for power factor and harmonic analysis.
Develop analytical modeling skills needed for modeling and analysis of harmonics in networks and components
Understand active power factor correction based on static VAR compensators and its control techniques
Understand series and shunt active power filtering techniques for harmonics.
REFERENCES:
G.T. Heydt, “Electric power quality”, McGraw-Hill Professional, 2007
Math H. Bollen, “Understanding Power Quality Problems”, IEEE Press, 2000
J. Arrillaga, “Power System Quality Assessment”, John wiley, 2000
J. Arrillaga, B.C. Smith, N.R. Watson & A. R.Wood ,”Power system Harmonic Analysis”, Wiley, 1997
E.Aeha and M.Madrigal, “Power System Harmonics, Computer Modelling and Analysis”, Wiley India, 2012.
Online Materials for Unit II: Click here
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