Power Quality Issues and their Mitigation Techniques In Power Systems - [2730707]


Teaching Scheme

Tutorial Practical Total
3 - 2 5

Examination Scheme

Theory Examination Practical Examination Total
ESE (E) PA (M) ESE Viva (V) PA (I)
70 30 30 20 150

    ESE = End Semester Examination, PA = Progressive Assessment

Course Type   

Syllabus Content

Categories & characteristics of power system electomagnetic phenomena for power quality, transients – impulsive & oscillatory, long duration & short duration voltage variations, voltage imbalance, waveform distortion, power frequency variations, power quality terms
Calculation of harmonic currents – effects of source unbalance, circuit reactance, dc filter inductance Current harmonics in converter with inductor input filter & capacitor input filter Single phase power conversion – effects of circuit resistance, source reactance, 3rd harmonics currents, reduction of harmonics Harmonic issues for phase controlled thyristors
Effect of harmonic on Transformer - Harmonics in No-Load Exciting Current, Harmonics due to Inrush Current, DC Magnetization Effect on Capacitor, Induction Motor, protection devices Harmonics in arc furnace loads & thyristor controlled reactor
DG technologies, Interface to the utility system, Impact of distributed generation on power quality, Operating conflicts, DG on distribution networks, Interconnection standards.
Shunt controllers: D-SVC, D-STATCOM – operation & control Series controllers: DVR – operation & control
Types, Ac network impedance, Design of filters – single tuned, double tuned & damped filter, filter component ratings
Advantages, Types – shunt, series & hybrid, current control techniques – instantaneous reactive power theory, synchronous reference frame theory, current controllers for active power filters – hysteresis, space vector pulse width modulation (SVPWM)

Reference Books

SrTitleAuthorPublicationAmazon Link
1Power Quality : VAR Compensation in power systemsR. Sastry Vedam & Mulukutla S. SarmaCRC press   
2Power Quality: Mitigation techniques in a distributed environmentMoreno-Munoz    
3Electrical Power Systems QualityRoger C. DuganTata Mcgraw Hill Publication   
4Power Electronic converter harmonics : Multipulse methods for clean powerDerek A. PaiceIEEE press   
5Instantaneous Power Theory and Applications to Power ConditioningHirofumi Akagi, Mauricio AredesJohn Wiley & Sons   
6Power qualityC. SankaranCRC Press   

Course Outcome

After learning the course the students should be able to:
1. Comprehend concept of Power Quality & it’s issues for various electrical systems
2. Understand effects of power qulaity on electrical apparatus
3. Know different power quality improvement tecniques and devices