Extended equal area criterion revisited (EHV power systems)

• Published in: IEEE transactions on power systems Vol. 7; no. 3; pp. 1012 - 1022
• Main Authors: Xue, Y., Wehenkel, L., Belhomme, R., Rousseaux, P., Pavella, M., Euxibie, E., Heilbronn, B., Lesigne, J.-F.
• Format: Journal Article Web Resource
• Language: English
• Published: United States IEEE 01.08.1992; Institute of Electrical and Electronics Engineers
• Subjects: 240100 - Power Systems- (1990-); DEVELOPED COUNTRIES; Direct methods; Electric power systems; ELECTRICAL TRANSIENTS; Energie; Energy; Engineering, computing & technology; EUROPE; FRANCE; Ingénierie, informatique & technologie; Power system dynamics; Power system security; Power system simulation; Power system stability; Power system transients; POWER SYSTEMS; POWER TRANSMISSION AND DISTRIBUTION; Real time systems; RELIABILITY; Robustness; STABILITY; Stability criteria; System testing; Transient stability; TRANSIENTS; VOLTAGE DROP
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/59.207314

A study was conducted on the extra high voltage (EHV) French power system in order to explore the extended equal-area criterion and test its suitability as a fast transient stability indicator. The assumptions underlying the method are reexamined, causes liable to invalidate them are identified, and indices are devised to automatically circumvent them. The selection of candidate critical machines is also reconsidered, and an augmented criterion is proposed. The various improvements were developed and tested on about 1000 stability scenarios, covering the entire 400 kV system. The severity of the scenarios, resulting from the combination of weakened pre and post-fault configurations, subjected the method to particularly stringent conditions. The simulation results are summarized.< >