PX4071 Power Quality Syllabus:
PX4071 Power Quality Syllabus – Anna University PG Syllabus Regulation 2021
OBJECTIVES:
To provide knowledge about various power quality issues.
To understand the concept of power and power factor in single phase and three phase systems supplying nonlinear loads.
To equip with required skills to design conventional compensation techniques for power factor correction and load voltage regulation.
To introduce the control techniques for the active compensation.
To understand the mitigation techniques using custom power devices such as DSTATCOM, DVR & UPQC
UNIT I INTRODUCTION
Introduction – Characterization of Electric Power Quality: Transients, short duration and long duration voltage variations, Voltage imbalance, waveform distortion, Voltage fluctuations, Power frequency variation, Power acceptability curves – power quality problems: poor load power factor, Non-linear and unbalanced loads, DC offset in loads, Notching in load voltage, Disturbance in supply voltage – Power quality standards.
UNIT II ANALYSIS OF SINGLE PHASE AND THREE PHASE SYSTEM
Single phase linear and non-linear loads – single phase sinusoidal, non-sinusoidal source – supplying linear and nonlinear loads – three phase balanced system – three phase unbalanced system – three phase unbalanced and distorted source supplying non-linear loads – concept of power factor – three phase- three wire – three phase – four wire system.
UNIT III CONVENTIONAL LOAD COMPENSATION METHODS
Principle of load compensation and voltage regulation – classical load balancing problem : open loop balancing – closed loop balancing, current balancing – harmonic reduction and voltage sag reduction– analysis of unbalance – instantaneous of real and reactive powers – Extraction of fundamental sequence component from measured.
UNIT IV LOAD COMPENSATION USING DSTATCOM
Compensating single – phase loads – Ideal three phase shunt compensator structure – generating reference currents using instantaneous PQ theory – Instantaneous symmetrical components theory – Generating reference currents when the source is unbalanced –Realization and control of DSTATCOM – DSTATCOM in Voltage control mode
UNIT V SERIES COMPENSATION OF POWER DISTRIBUTION SYSTEM
Rectifier supported DVR – DC Capacitor supported DVR – DVR Structure – Voltage Restoration – Series Active Filter – Unified Power Quality Conditioner.
TOTAL : 45 PERIODS
OUTCOMES:
After completing the above course, students will be able to
CO1: comprehend the consequences of Power Quality issues.
CO2: conduct harmonic analysis of single phase and three phase systems supplying non-linear loads.
CO3: design passive filter for load compensation.
CO4: design active filters for load compensation.
CO5: understand the mitigation techniques using custom power devices such as distribution static compensator (DSTATCOM), dynamic voltage restorer (DVR) & UPQC.
TEXTBOOKS:
1.Arindam Ghosh and Gerad Ledwich “Power Quality Enhancement Using Custom Power Devices”,Kluwer Academic Publishers, First Edition,2002
2.G.T.Heydt, “Electric Power Quality”, Stars in a Circle Publications, Second Edition, 1994 REFERENCES:
3. R.C.Duggan “Electric Power Systems Quality”, Tata MC Graw Hill Publishers, Third Edition,2012
4. Arrillga “Power System Harmonics”, John Wiely and Sons,2003
5. Derek A.Paice “Power Electronic Converter Harmonics” IEEE Press, 1995