Virtual Technical Library
Welcome to our Virtual Technical Library where you can download some of the papers on blackout prevention, SCADA/EMS architectures and other topics of interest which we authored or co-authored after the year 2000. Also available on this page is information about our books on real-time stability, power system control centers, and graph theory.
Books
Real-Time Stability in Power Systems. Techniques for Early Detection of the Risk of Blackout,
Second Edition,
Springer, 2014, New York, NY
This pioneering volume has been updated to reflect the state-of-the-art in blackout prediction and prevention. It: addresses the fundamentals and algorithms of successfully deployed real-time steady-state, transient and voltage stability techniques; documents industry accepted metrics and tools to quantify and monitor the distance to instability; describes stability applications of synchrophasors; and reviews additional topics, such as trajectory sensitivities. As such, this book remains the definitive resource for industry practitioners and academic researchers in this critical area of power system operations. Chapters include:
Power System Dynamic Equilibrium, Power Flow, and Steady-State Stability, Peter W. Sauer and M. A. Pai
Fast Computation of the Steady-State Stability Limit, Savu C. Savulescu (read more...)
Real-Time Stability Assessment in
Modern Power System Control Centers, John Wiley and IEEE
Press, 2009, New York, NY
This book provides practical, hands-on techniques for assessing power system stability in real-time and answers the need for a hands-on guide for assessing power system stability in real-time to support on-line decision making in system operations. The book is primarily geared toward the practical aspects of the subject, and is an excellent source for utility experts, consultants, researchers, professionals, and advanced undergraduate and graduate students. Chapters include:
The Real-Time and Study-Mode Data Environment in Modern SCADA/EMS, Sudhir Virmani and Savu C. Savulescu
Overview of Key Stability Concepts Applied for Real-Time Operations, Savu C. Savulescu
Real-Time Stability in Power Systems. Techniques for Early Detection of the Risk of Blackout,
Springer, 2006, Norwell MA
In the aftermath of the wave of blackouts that affected US, UK and mainland Europe utilities in 2003 and 2004, renewed attention has been focused on maintaining highest level of reliability and security in the operation of the power system. The lack of adequate transmission infrastructure as well as real-time tools aimed at detecting and alarming system conditions have also been highlighted. Chapters include:
Relationships between Power System Dynamic Equilibrium, Load-Flow, and Operating Point Stability, P. W. Sauer and M. A. Pai
Fast Assessment of the Distance to Instability, Savu C. Savulescu
Computerized Operation of Power Systems, ELSEVIER Scientific
Publishing Company, 1976, Amsterdam, The Netherlands
The book covers the technical papers and the round-table discussions of the International Symposium Computerized Operation of Power Systems, 18 - 20 August 1975, São Carlos, S.P., Brazil. Organized and chaired by Savu C. Savulescu at a time wen the SCADA/EMS industry was in its infancy, the event provided a forum for world-wide experts to address key issues such as system architecture, applications, user interfaces, etc. Contents encompass:
Practical aspects of implementing real-time control systems, Glenn W. Stagg
The AEP state estimation monitoring and security system, J. F. Dopazo, S. T. Ehrmann, A. M. Sasson and L. S. Van Slyck
Graphs, Digraphs and Electrical Networks. Applications to Operations Research, originally published in Portuguese language with the title
Grafos, Dígrafos e Redes Elétricas. Aplicações na Pesquisa Operacional by the Editora IBEC, 1981, São Paulo, S.P., Brazil. Translated in Romanian language and published with the title
Grafuri si Retele Electrice by the Editura Tehnica, 1994, Bucharest, Romania.
This book stems from the undergraduate and graduate courses taught by the author between 1973 and 1978 at the School of Electrical Engineering of the University of Sao Paulo in Sao Carlos, SP, Brazil. An interesting aspect of the literature that addresses this topic is the fact that, depending upon the theoretical orientation of the author, the graph theory appears to be seen differently by the mathematician, the electrical engineer or the economist. Indeed, the applications of this branch of mathematics, which entered the stage in 1736 when the pioneering Swiss mathematician and physicist Leonhard Euler solved the now famous problem of the seven bridges from Konigsberg, are quite diverse, but the theoretical core is the same. Accordingly, the book starts from the basic concepts, theoretical fundamentals and classical algorithms, and proceeds with a consistently unified discussion of key applications in electrical networks and operations research. The text is primarily geared toward graduate students and professors in electrical engineering, and can be used as a desktop reference by professionals responsible for developing innovative optimization and network connectivity applications.
Technical Papers Presented at IEEE, CIGRE, Pennwell and other International Events:
Overview of Security Assessment for Grid Operations -- Chapter 1 in "Use of Voltage Stability Assessment and Transient Stability Assessment Tools in Grid Operations", in Nuthalapati, S. (Editor), Springer, 2021 (available from Springer after publication in 2021)
A Brief History of the Contingency Analysis Tool in Control Centers -- authored by Savu C. Savulescu, Chapter 3 in Real-time Contingency Analysis, PES-TR85 prepared by the Power System Operation, Planning and Economics (PSOPE) Committee, Bulk Power System Operations Subcommittee, Task Force on Real-time Contingency Analysis, Final Report, February, 2021
Visualizing the Risk of Blackout in Smart Transmission Grids -- presented by Bernd Stottok, Chris O, Heyde, Roland Eichler and Savu C. Savulescu at the CIGRE International Symposium “Smart Grids: Next Generation Grids for New Energy Trends”, Lisbon, Portugal, April 2013
Early Detection and Mitigation of the Risk of Blackout in Transmission Grid Operation -- presented by Roland Eichler, Rainer Krebs, Savu C. Savulescu and Michael Wache at the CIGRE International Symposium "The Electric Power System of the Future - Integrating supergrids and microgrids", Bologna, Italy, September 13-15, 2011
Backup Control Center Design and Implementation Criteria -- paper SGM-2011GM0351 to be presented by Savu C. Savulescu at the IEEE PES General Meeting 2011, Detroit, MI, July 24-29, 2011
Half a Century of Computer Methods in Power System Analysis, Planning and Operations. Part II: Glenn W. Stagg and His Contributions to Advancing the Technology -- paper PSE-11 PSCE0208 presented by Savu C. Savulescu and Sudhir Virmani at the IEEE Power Systems Conference & Expo PSCE 2011, Phoenix, AZ, March 20-24, 2011
Cálculo On-Line de Límites de Estabilidad Estática de Grandes Redes Eléctricas Mediante el Programa QuickStab -- paper presented by Roberto D. Molina Mylius, Martin Cassano and Savu C. Savulescu at CIGRE 13th Regional Ibero-American Meeting, Puerto Iguazú, Argentina, May 19-20, 2009
Overview of Key Stability Concepts Applied for Real-Time Operations -- paper PSE-09PSCE0657 presented by Savu C. Savulescu at the IEEE Power Systems Conference and Expo PSCE 2009, Seattle, WA, March 15-18, 2009
Real-Time Calculation of Power System Loadability Limits -- paper No. 576 presented by Sudhir Virmani, Dusko Vickovic and Savu C. Savulescu at the IEEE Power Tech Conference, Lausanne, Switzerland, July 2, 2007
Real-Time System Stability Monitoring in the Transmission Network of Bosnia and Herzegovina -- paper presented by Dusko Vickovic, Roland Eichler and Savu C. Savulescu at the Pennwell PowerGrid Europe Conference, Madrid, Spain, June 26, 2007
Real-Time Stability Monitoring at Transelectrica -- paper PSCE06-1288 presented by Horia S. Campeanu, Eric L'Helguen, Yasmine Assef, Nicolas Vidal and Savu C. Savulescu at the IEEE Power System Computation and Expo PSCE 2006, Atlanta, GA, October 29, 2006
A Metric for Quantifying the Risk of Blackout -- paper 04PS0294 presented by Savu C. Savulescu at the IEEE Power System Computation and Expo PSCE 2004, New York, NY, October 10, 2004
Evaluation of the Stability Reserve of Transelectrica's Transmission System by Using QuickStab Professional -- paper S2p-12-en presented by Cornel Aldea and Savu C. Savulescu at the National Conference of Energy CNE 2004, Neptun, Romania, 13-17 June 2004
Real-Time Detection of the Risk of Blackout -- paper 04GM0484 presented at the IEEE PES General Meeting 2004, Denver, CO, June 9, 2004
Solving Open Access Transmission and Security Analysis Problems with the Short-Circuit Currents Method -- paper presented by Savu C. Savulescu at Pennwell Latin America Power Conference, Monterrey, Mexico, August 27, 2002
Integrated Information Architecture for the Operation of Electric Markets -- Key-note address presented by Savu C. Savulescu at the Pennwell Latin America Power Conference, Caracas, Venezuela, May 9, 2000
White Papers
Stability Assessment Requires Much More Than Just Load-Flow Calculations -- According to a relatively widespread belief in the utility industry, it would be possible to assess "voltage stability" with load-flows, continuation load-flows and other tools that allow drawing "PV-Nose Curves" without representing the internal reactances of the generators. As shown in this essay, nothing is further from truth (read more ...)
EPIC is In - Alpha Is Out -- On May 29, 2001, Intel unveiled the Itanium processor - a 64 bit EPIC (Explicit Parallel Instruction Computing) engine that entered the scene to compete directly with the RISC processors in the high-end server and workstation markets. At the same time, in a move reflecting the sluggish Alpha sales, Compaq announced that, effective immediately, it was discontinuing the manufacturing of a chip that, until then, had been the darling of SCADA/EMS system integrators. The considerations developed in this white paper could have been branded at that time as pure speculations, but life has followed exactly the path predicted herein (read more ...)
Disclaimer: the assessments expressed in the white papers posted on this page reflect solely the personal opinions of the author and should not be construed as positioning statements from SCS Computer Consulting and/or Energy Consulting International, Inc.
Complete List of Publications (1965 - 2021)
Here's the complete list of publications authored and/or co-authored by Savu.