This book highlights the most important aspects of mathematical modeling, computer simulation, and control of medium-scale power systems. It discusses a number of practical examples based on Sri Lanka’s power system, one characterized by comparatively high degrees of variability and uncertainty. Recently introduced concepts such as controlled disintegration to maintain grid stability are discussed and studied using simulations of practical scenarios.
Power systems are complex, geographically distributed, dynamical systems with numerous interconnections between neighboring systems. Further, they often comprise a generation mix that includes hydro, thermal, combined cycle, and intermittent renewable plants, as well as considerably extended transmission lines. Hence, the detailed analysis of their transient behaviors in the presence of disturbances is both highly theory-intensive and challenging in practice. Effectively regulating and controlling power
system behavior to ensure consistent service quality and transient stability requires the use of various schemes and systems.
The book’s initial chapters detail the fundamentals of power systems; in turn, system modeling and simulation results using Power Systems Computer Aided Design/Electromagnetic Transients including DC (PSCAD/EMTDC) software are presented and compared with available real-world data. Lastly, the book uses computer simulation studies under a variety of practical contingency scenarios to compare several under-frequency load-shedding schemes. Given the breadth and depth of its coverage, it offers a truly unique resource on the management of medium-scale power systems.
Tharangika Bambaravanage obtained her B.Sc. (Engineering), M.Eng. in Electrical Engineering and M.Phil. in Power System Stability and Control from the University of Moratuwa, respectively, in 1998, 2005 and 2017. She has been a senior lecturer at the Institute of Technology, University of Moratuwa, since 2017.
Asanka Rodrigo obtained his BSc(Hons) and MSc in Electrical Engineering, respectively, in 2002 and 2004, from University of Moratuwa, and PhD in Industrial Engineering from Hong Kong University of Science and Technology in 2010. He has been a senior lecturer in Electrical Engineering at the Faculty of Engineering of University of Moratuwa since 2010.
Sisil Kumarawadu obtained his BSc(Hons) in Electrical Engineering from University of Moratuwa in 1996. He obtained his MEng in advanced Systems Control Engineering and PhD in Robotics and Intelligent Systems in 2000 and 2003, respectively, from Saga
National University, Japan. From April 2003 to July 2005, he was with Intelligent Transportation Systems Research Center, NCTU, Taiwan, as a postdoctoral research fellow. Currently, he is a professor in electrical engineering at University of Moratuwa.
