About the Book

Power quality problems have become an increasing concern over the last decade, but surprisingly few analytical techniques have been developed to overcome these disturbances in system-equipment interactions. Now in this comprehensive book, power engineers and students can find the theoretical background necessary for understanding how to analyze, predict, and mitigate the two most severe disturbances: voltage sags and interruptions. This is the first book to offer an in-depth analysis of voltage sags and interruptions, and to show how to apply mathematical techniques for practical solutions to these disturbances. From Understanding Power Quality Problems you will gain important insights into:

• Various types of power quality phenomena and power quality standards

• Current methods for power system reliability evaluation

• Origins of voltage sags and interruptions

• Essential analysis of voltage sags for characterization and prediction of equipment behavior and stochastic prediction

• Mitigation methods against voltage sags and interruptions

Contents

1. Overview of Power Quality and Power Quality Standards 2. Long Interruptions and Reliability Evaluation 3. Short Interruptions 4. Voltage Sags—Characterization 5. Voltage Sags--Equipment Behavior 6. Voltage Sags--Stochastic Assessment 7. Mitigation of Interruptions and Voltage Sags 8. Summary and Conclusions.

About the Author

Math H. J. Bollen is associate professor in the Department of Electric Power Engineering at Chalmers University of Technology, Gothenburg, Sweden. Before joining Chalmers, he was employed as a lecturer at the University of Manchester Institute of Technology (UMIST), Manchester, UK and at Eindhoven University of Technology, Eindhoven, The Netherlands. In 1998 Dr. Bollen received the ABB Energy Prize (Gunnar Engström Stipendiet) for his work on power quality and his contributions toward understanding voltage sags. He is cochair of the IEEE Industry Applications Society Power System Reliability Subcommittee and is active in a number of other working groups on power quality and reliability.