Transient Stability of Power Systems: A Unified Approach to Assessment and Control (Power Electronics and Power Systems) - Hardcover

Pavella, Mania; Ernst, Damien; Ruiz-Vega, Daniel

Hardcover

ISBN 10: 0792379632 ISBN 13: 9780792379638

Publisher: Springer, 2000

Synopsis

The market liberalization is expected to affect drastically the operation of power systems, which under economical pressure and increasing amount of transactions are being operated much closer to their limits than previously. These changes put the system operators faced with rather different and much more problematic scenarios than in the past. They have now to calculate available transfer capabilities and manage congestion problems in a near on­ line environment, while operating the transmission system under extremely stressed conditions. This requires highly reliable and efficient software aids, which today are non-existent, or not yet in use. One of the most problematic issues, very much needed but not yet en­ countered today, is on-line dynamic security assessment and control, enabling the power system to withstand unexpected contingencies without experienc­ ing voltage or transient instabilities. This monograph is devoted to a unified approach to transient stability assessment and control, called SIngle Machine Equivalent (S1ME).

About this title

Synopsis

"Transient Stability of Power Systems" is a monograph devoted to a hybrid-direct temporal method called SIME (for Single Machine Equivalent). SIME processes temporal information about the multimachine system dynamics to assess and control any type of transient instabilities under any type and model of power systems. Two approaches may be distinguished depending upon the source of information used: 'Preventative SIME' which relies on a time-domain program to simulate anticipated contingencies, and 'Emergency SIME' which uses real-time measurements. Preventative SIME mainly comprises two techniques: contingency filtering, ranking, and assessment; and (simultaneous) stabilization of harmful contingencies.The resulting preventative transient stability assessment and control (TSA&C) software can be used in all application contexts of transient stability studies. In a control center, for instance, its computational performances enable it to cope with very stringent requirements of real-time operation. Besides, interfacing SIME with an OPF algorithm allows combining transient stability constraints with specifics of the liberalized electricity market.

Emergency SIME is a novel closed-loop control technique which contains the transient instabilities caused by contingencies' actual occurrence. It relies on real-time measurements to predict (the size of) instability and, accordingly, to design and trigger control actions able to impede system loss of synchronism.Emergency SIME is particularly suitable for protecting important generation sites and can complement preventative SIME. Both approaches rely on the same principles and basic software which yields a comprehensive and unified approach to TSA&C. The design of near optimal control techniques is a major asset of this software. This book provides extensive illustrations on a variety of power systems ranging from a simple 3-machine test system to real-world power systems comprising up to 627 generators and 4112 busses. "Transient Stability of Power Systems" will be especially helpful to researchers, utility engineers, and software designers and developers who are developing various types of transient stability software packages.

Edition details

• Publisher: Springer
• Publication date: 2000
• Language: English
• ISBN 10: 0792379632
• ISBN 13: 9780792379638
• Binding: Hardcover
• Number of pages: 256