Course Details
Subject {L-T-P / C} : EE6244 : Power Quality in Power Distribution Systems { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Gopalakrishna Srungavarapu
Syllabus
Module1: 7 Hours
Characterisation of electric power quality - Power quality terms. Power quality problems. Analyses of voltage sag, distortion, flicker etc. Definitions of various powers, power factor and other figures of merit under balanced, unbalanced and non-sinusoidal conditions.
Module2: 12 Hours
Theories of load compensation: Classical methods of power factor correction, voltage regulation and load balancing. Different methods of estimating compensator impedances. Matlab Simulations
Module3: 6 Hours
Instantaneous Reactive Power Compensators: Akagi’s definition of instantaneous reactive power and compensation technique. Power Quality concepts based on Akagi’s definition of instantaneous reactive power. Matlab Simulations
Module4: 7 Hours
Latest methods in compensator Design: Compensator design in 3-phase, 3 wire and 4 wire systems for unbalanced source and unbalanced load condition. Star and delta connected compensator design. Single phase active power filter design and Matlab simulation
Module 5: 6 Hours
Design aspects of custom power devices: Protecting sensitive loads using DVR, Unified Power Quality Conditioner (UPQC).
Course Objectives
- To understand the IEEE definitions of power and its components in single-phase circuits and 3 phase circuits and apply them to maintain the standards in power systems
- Develop a load compensator for pf correction, voltage regulation and load balancing in steady state conditions
- Apply instantaneous load compensation methods to correct load unbalance and harmonics
- Apply the knowledge for the analysis and development of a dynamic voltage restorer (DVR)
Course Outcomes
Understand IEEE definitions of power and its components in single phase circuits and 3 phase circuits <br />Design a load compensator for pf correction, voltage regulation and load balancing in steady state conditions <br />Design of instantaneous load compensator for 3 phase 3 wire/ 4 wire systems during unbalanced sinusoidal source and unbalanced load conditions <br />Design an instantaneous load compensator for single phase non liner loads <br />Design a hysteresis current controller and PWM controller for injecting currents for load compensation <br />Understanding the operation DVR and UPQC
Essential Reading
- Mahesh Kumar, Power Quality in Power Distribution Systems, NPTEL , 2012
- A. Ghosh and G. Ledwich, Kluwer, Power quality enhancement using custom power devices, Academic Publication , 2002
Supplementary Reading
- C. Shankran, Power quality, CRC Press , 2001
- Roger C. Dugan, Handbook of power quality, Tata Mc Graw Hill , 2002
Journal and Conferences
- E. H. Watanabe, R. M. Stephan and M. Aredes, "New concepts of instantaneous active and reactive powers in electrical systems with generic loads," in IEEE Transactions on Power Delivery, vol. 8, no. 2, pp. 697-703, Apr 1993.
- H. Akagi, Y. Kanazawa and A. Nabae, "Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components," in IEEE Transactions on Industry Applications, vol. IA-20, no. 3, pp. 625-630, May 1984