Le nouveau Cherche et trouve de Little Urban, aussi coloré, déjanté et diablement amusant que le premier (A la recherche de la Carotte bleue), en très très grand format pour le plaisir de tout-petits !!! (Et des plus grands, qui trouvera en premier ?)
Asymmetric operation involves operating power transmission corridors at full capacity from a few milliseconds to a few hours even though individual three-phase lines have been weakened due to fault conditions. This book describes how asymmetric operation is implemented, how much it costs and how it can improve the reliability, economics and flexibility of electric power transmission systems. Numerous examples of asymmetric operation are provided at all major HV, EHV and UHV voltages demonstrating the very real benefits of asymmetric operation.
First, the underlying concepts of symmetric three-phase transmission system planning and operation are introduced. Then, asymmetric operation is presented, and its impact on system security and reliability is considered. Different implementation strategies are examined, and numerous practical examples illustrate the ease and flexibility with which such strategies can be applied in the case of either multiple- or single-line AC power transmission corridors. Finally, economic analysis quantifies the benefits of asymmetric operation.
Richard J. Marceau, Eng., Ph. D., is professor of Electrical Engineering and Provost at the University of Ontario Institute of Technology.
Abdou-R. Sana, Eng., Ph. D., is an independent consultant in electric energy systems.
Donald T. McGillis, Eng., is an adjunct professor in the Department of Electrical and Computer Engineering at both McGill University and Concordia University.