Protective Relaying for Power Generation Systems

This book, with 16 chapters and five appendices, arguably may be the most comprehensive single volume on generator and motor protection on the market. "…this book presents to practicing utility engineers a wealth of information that should be included in their library. Even those not directly involved in protection should have available to them the theory and practices associated with the protection described here "…Throughout the book, typical protective equipment settings are calculated with appropriate reference to electromechanical, solid-state, and digital protective devices. Where required, the author resorts to the application of Excel and Mathcad. "Protective Relaying for Power Generation Systems is a recommended addition to every power engineer's library. The details may go beyond normal equipment protection requirements, but the depth of analysis, the data presented, and the qualitative discussion of all of the aspects involved in generator protection add a dimension not available in any single text. Reviewed by Stanley H. Horowitz in September/October 2006 Magazine of IEEE Power Engineering Society, Vol.4 No.5 Organizing material in a structure that allows for quick and easy reference, Protective Relaying for Power Generation Systems features an in-depth presentation of topics and specific information related to generators and motors. This book provides coverage of protective component considerations, including explanations of potential damage. It explores a broad range of subjects including detailed time decrement generator fault calculations and minimum excitation limits. The text contains Excel® and Mathcad® workbook constructions for performing protection-related calculations. This is a valuable resource for electric utility engineers and those working in the power industry and at generation facilities.


Table of Contents

Ch. 1 Generator normal operations 1
Ch. 2 Generator short circuit calculations 15
Ch. 3 Generator differential relay : 87G 47
Ch. 4 Backup fault protection 77
Ch. 5 Generator ground fault protection 117
Ch. 6 Unbalanced current protection 165
Ch. 7 Motoring protection 191
Ch. 8 Field winding protection 201
Ch. 9 Overexcitation 221
Ch. 10 Abnormal frequency protection 237
Ch. 11 Minimum excitation limiter 249
Ch. 12 Loss of synchronism 287
Ch. 13 Loss of field protection 321
Ch. 14 Synchronization protection 357
Ch. 15 Accidental energization protection 389
Ch. 16 Motor protection 427
App. A Generator data sheet 517
App. B CT performance in differential relay circuits 519
App. C Dynamic and steady state stability limits 527
App. D Swing impedance locus calculation using excel 533
App. E Generator shaft torsional transients 545