About the Author P.M. Anderson has over 40 years of experience in power system engineering and research, power education, technical writing, and research management. His areas of interest are power system analysis, computer applications, and system dynamic performance. Currently a consultant, Dr. Anderson served as a professor of engineering at Iowa State University, Arizona State University, and Washington State University, where he was the Schweitzer Visiting Professor. Dr. Anderson is the author of Analysis of Faulted Power Systems (IEEE Press, 1995) and coauthor of Power System Control and Stability (IEEE Press, 1994), Subsynchronous Resonance in Power Systems (IEEE Press, 1990), and Series Compensation of Power Systems (PBLSH!, Inc., 1996).