IAN DOBSON PUBLICATIONS

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NEW PAPERS

Quantifying distribution system resilience from utility data: large event risk and benefits of investments
A Ahmad, I Dobson
  Arxiv preprint July 2024

Towards using utility data to quantify how investments would have increased the wind resilience of distribution systems
A Ahmad, I Dobson
  IEEE Transactions on Power Systems, vol 39, no 4, July 2024, pp 5949-5962

The statistical spread of transmission outages on a fast protection time scale based on utility data
I Dobson, DA Maldonado, M Anitescu
  Arxiv preprint July 2024

Quantifying the earthquake risk to the electric power transmission system in Los Angeles at the census tract level
B Cheng,  L Nozick, I Dobson, R Davidson, D Obiang, J Dias, M Granados
  IEEE Access, vol 12, 2024, pp. 126019-126032

Cascading structural failures of towers in an electric power transmission line due to straight line winds
S Dikshit, I Dobson, A Alipour
  Reliability Engineering and System Safety, vol. 250,  2024, 110304

Risk assessment and mitigation of cascading failures using critical line sensitivities
Y Dai, M Noebels, R Preece, M Panteli, I Dobson
IEEE Transactions on Power Systems, vol 39, no 2, March 2024, pp 3937-3948

Ranking the impact of interdependencies on power system resilience using stratified sampling of utility data
MR Kelly-Gorham, PDH Hines, I Dobson
IEEE Transactions on Power Systems, vol 39, no 1, Jan 2024, pp 1251-1262

Analyzing cascading failures and blackouts using utility outage data
I Dobson
Chapter 2 of book: Cascading failures in power grids
 Kai Sun (ed), Springer Nature 2024

Grid restoration after extreme weather events
S Ekisheva, DK Pratt, M Kachadurian, WG Martin, J Norris, I Dobson
  Innovative Smart Grid Technologies Europe, Grenoble, France, October 2023

Models, metrics, and their formulas for typical electric power system resilience events
I Dobson
  IEEE Transactions on Power Systems, vol 38, no 6, November 2023, pp 5949-5952

How long is a resilience event in a transmission system?: Metrics and models driven by utility data
I Dobson, S Ekisheva
IEEE Transactions on Power Systems, vol 39, no 2, March 2024, pp 2814-2826 

The most frequent N-k line outages occur in motifs that can improve contingency selection
K Zhou, I Dobson, Z Wang
  IEEE Transactions on Power Systems, vol 39, no 1, January 2024, pp 1785-1796

Assessing transmission resilience during extreme weather with outage and restore processes
S Ekisheva, J Norris, I Dobson, R Rieder
  Probability Methods Applied to Power Systems, Manchester UK, 2022

Feedback control approaches for restoration of power grids from blackouts
JM Miller, HN Villegas Pico, I Dobson, A Bernstein, B Cui
  Power Systems Computation Conference, Porto, Portugal, June 2022
and Electric Power Systems Research, vol 211, 108414, October 2022

A Markovian influence graph formed from utility line outage data to mitigate large cascades
  K Zhou, I Dobson, Z Wang, A Roitershtein, AP Ghosh
  IEEE Transactions on Power Systems, vol 35, no 4, July 2020, pp 3224-3235

Finding a Zipf distribution and cascading propagation metric in utility line outage data
I Dobson
  preprint arXiv:1808.08434 [physics.soc-ph]

Extracting resilience metrics from distribution utility data using outage and restore process statistics
NK Carrington, I Dobson,  Z Wang
  IEEE Transactions on Power Systems, vol 36, no 6, November 2021, pp 5814-5823.

RESILIENCE

Methods for analysis and quantification of power system resilience
A Stankovic et al,
IEEE Transactions on Power Systems, vol 38, no 5, pp 4774-4787, September 2023

Resilience of electric utilities during the COVID-19 pandemic in the
framework of the CIGRE definition of power system resilience

S Skarvelis-Kazakos, M Van Harte, M Panteli, E Ciapessoni, D Cirio,
A Pitto, R Moreno, C Kumar, C Mak, I Dobson, C Challen, M Papic, C Rieger
  International Journal of Electrical Power and Energy Systems, vol  186, March 2022

Impact of extreme weather on North American transmission system outages
S Ekisheva, R Rieder, J Norris, M Lauby, I Dobson
IEEE Power & Energy Society General Meeting, July 2021

Transmission grid outage statistics extracted from a web page logging outages in Northeast America
NK Carrington, I Dobson,  Z Wang
  North American Power Symposium, College Station TX USA, November 2021

Bayesian estimates of transmission line outage rates that consider line dependencies
K Zhou, JR Cruise, CJ Dent, I Dobson, L Wehenkel, Z Wang, AL Wilson
  IEEE Transactions on Power Systems, vol 36, no 3, March 2021, pp 1095-1106

Characteristics and risk of microgrid outages from a complex systems point of view
AL Bowker, DE Newman, BA Carreras, D Huang, I Dobson, C Koplin
Fifty-fourth Hawaii International Conference on System Sciences, January 2021.

Using utility outage statistics to quantify improvements in bulk power system resilience
MR Kelly-Gorham, P Hines, K Zhou, I Dobson
  Power Systems Computation Conference, Porto, Portugal, June 2020
and Electric Power Systems Research, vol 189, 106676, December 2020

Applying Bayesian estimates of individual transmission line outage rates
K Zhou, JR Cruise, CJ Dent, I Dobson, L Wehenkel, Z Wang, AL Wilson
  Probability Methods Applied to Power Systems, Liege, Belgium, August 2020

Can the Markovian influence graph simulate cascading resilience from historical outage data?
K Zhou, I Dobson, Z Wang
  Probability Methods Applied to Power Systems, Liege, Belgium, August 2020

Using historical utility outage data to compute overall transmission grid resilience
MR Kelly-Gorham, P Hines, I Dobson
Modern Electric Power Systems Conference, Wrocław Poland, September 2019
  preprint; arXiv:1906.06811 [physics.soc-ph]

Investment planning for earthquake-resilient electric power systems considering cascading outages
B Cheng, L Nozick, I Dobson
Earthquake Spectra, 2022

Seismic retrofit for electric power systems
N. Romero, L.K. Nozick, I. Dobson,  N. Xu, D.A. Jones
Earthquake Spectra, vol 31, no 2, May 2015, pp 1157-1176

Transmission and generation expansion to mitigate seismic risk
N. Romero, L.K. Nozick, I. Dobson, N. Xu, D.A. Jones
IEEE Transactions on Power Systems, vol 28, no 4, November 2013, pp 3692-3701

Investment planning for electric power systems under terrorist threat
N. Romero, N. Xu, L.K. Nozick, I. Dobson, D. Jones
IEEE Transactions on Power Systems, vol 27, no 1, February 2012, pp 108-116

Implications of an inverse branching aftershock sequence model
D.L. Turcotte, S.G. Abaimov, I. Dobson, J.B. Rundle
  Physical Review E,  vol 79, no 1, 016101, 2009

COMPLEX SYSTEMS AND BLACKOUTS

older conference papers on complex systems

overviews

Complex systems analysis of series of blackouts: cascading failure, critical points, and self-organization
I. Dobson, B.A. Carreras, V.E. Lynch, D.E. Newman
  Chaos, vol. 17, 026103, June 2007

Towards quantifying cascading blackout risk
  I. Dobson, K.R. Wierzbicki, J. Kim, H. Ren,
Bulk Power System Dynamics and Control-VII, Charleston SC USA, August 2007

Initial review of  methods for cascading failure analysis in electric power transmission systems
  IEEE PES CAMS Task Force on Cascading Failure
IEEE Power Engineering Society General Meeting, Pittsburgh PA USA, July 2008

Statement to the Federal Energy Regulatory Commission
I. Dobson
Reliability Technical Conference, Washington DC, June 4 2015

Benchmarking and validation of cascading failure analysis tools
  IEEE Working Group on Cascading Failures
IEEE Transactions on Power Systems, vol 31, no 6, November 2016, pp 4887 - 4900


self-organized criticality and blackout risk

Critical points and transitions in an electric power transmission model for cascading failure blackouts
B.A. Carreras, V.E. Lynch, I. Dobson, D.E. Newman,
Chaos, vol 12, no 4, December 2002, pp 985-994
copyright 2002 American Institute of Physics; official link
 B.A. Carreras et al.,Chaos, 12, 985 (2002)

Blackout mitigation assessment in power transmission systems
B.A. Carreras, V.E. Lynch, I. Dobson, D.E. Newman
Thirty-sixth Hawaii International Conference on System Sciences, Hawaii, January 2003

Complex dynamics of blackouts in power transmission systems
B.A. Carreras, V.E. Lynch, I. Dobson, D.E. Newman
Chaos, vol 14, no 3, September 2004, pp 643-652
 
copyright 2002 American Institute of Physics; official link
B.A. Carreras et al.,Chaos, 14, 643 (2004)

The impact of various upgrade strategies on the long-term dynamics and robustness of the transmission grid
D.E. Newman, B.A. Carreras, V.E. Lynch, I. Dobson
Electricity Transmission in Deregulated Markets, conference at Carnegie-Mellon University, Pittsburgh PA, December 2004

Risk assessment in complex interacting infrastructure systems
D. E. Newman, B. Nkei, B. A. Carreras, I. Dobson, V. E. Lynch, P. Gradney  
Thirty-eighth Hawaii International Conference on System Sciences, Hawaii, January 2005

Understanding the effect of risk aversion on risk
U. Bhatt, D.E. Newman, B.A. Carreras, I. Dobson
Thirty-eighth Hawaii International Conference on System Sciences, Hawaii, January 2005

Interdependent risk in interacting infrastructure systems
B.A. Carreras, D.E. Newman, P. Gradney, V.E. Lynch,  I. Dobson
Fortieth Hawaii International Conference on System Sciences, Hawaii, January 2007

Evaluating the effect of upgrade, control and development strategies on robustness and failure risk of the power transmission grid
D.E. Newman, B.A. Carreras, V.E. Lynch,  I. Dobson
Forty-first Hawaii International Conference on System Sciences, Hawaii, January 2008

Long-term effect of the n-1 criterion on cascading line outages in an evolving power transmission grid
H. Ren, I. Dobson, B.A. Carreras
IEEE Transactions on Power Systems, vol 23, no 3, August 2008, pp 1217-1225

A simple model for the reliability of an infrastructure system controlled by agents
B.A. Carreras, D.E. Newman,  I. Dobson, M. Zeidenberg
Forty-second Hawaii International Conference on System Sciences, Hawaii, January 2009

The impact of risk-averse operation on the likelihood of extreme events in a simple model of infrastructure
B.A. Carreras, D.E. Newman, I. Dobson, M. Zeidenberg
Chaos, vol 19, 043107, October 2009
 
copyright 2009 American Institute of Physics; official link
Carreras et al, Chaos 19 (2009)


Dynamics of an economics model for generation coupled to the OPA power transmission model
B.A. Carreras, D.E. Newman, M. Zeidenberg, I. Dobson
Forty-third Hawaii International Conference on System Sciences, Kauai, Hawaii, January 2010

The impact of distributed generation on power transmission grid dynamics
D.E. Newman, B.A. Carreras, M. Kirchner, I. Dobson,
  Forty-fourth Hawaii International Conference on System Sciences, Kauai, Hawaii, January 2011

Exploring complex systems aspects of blackout risk and mitigation
D.E. Newman, B.A. Carreras, V.E. Lynch, I. Dobson
  IEEE Transactions on Reliability, vol 60, no 1, March 2011, pp 134-143

Determining the vulnerabilities of the power transmission system
B.A. Carreras, D.E. Newman, I. Dobson
Forty-fifth Hawaii International Conference on System Sciences, Maui, Hawaii, January 2012

Risk metrics for dynamic complex infrastructure systems such as the power transmission grid
D.E. Newman, B.A. Carreras, N.S. Degala, I. Dobson
  Forty-fifth Hawaii International Conference on System Sciences, Maui, Hawaii, January 2012

Validating OPA with WECC data
B.A. Carreras, D.E. Newman, I. Dobson, N.S. Degala
  Forty-sixth Hawaii International Conference on System Sciences, Maui, Hawaii, January 2013

Transdisciplinary electric power grid science
C.D. Brummitt, P.D.H. Hines, I. Dobson, C. Moore, R.M. D'Souza
opinion piece, Proceedings of the National Academy of Sciences, vol 110, no 30, July 2013, p 12159

Thresholds and complex dynamics of interdependent cascading infrastructure systems
B.A. Carreras, D.E. Newman,  I. Dobson, V.E. Lynch, P. Gradney
Chapter 5, pp. 95-114, in G. D'Agostino and A. Scala (eds.)
Networks of Networks: The Last Frontier of Complexity 
Springer Switzerland 2014, DOI: 10.1007/978-3-319-03518-5_5

The impact of size and inhomogeneity on power transmission network complex system dynamics
B.A. Carreras, D.E. Newman, I. Dobson
  Forty-seventh Hawaii International Conference on System Sciences, Big Island, HI January 2014

Does size matter?
B.A. Carreras, D.E. Newman, I. Dobson
  Chaos, vol 24, no 2, 023104, 2014
 
copyright 2014 American Institute of Physics; official link
Carreras et al, Chaos 24 (2014)

Lambda-gaga: towards a new metric for the complex system state of the electrical grid
B.A. Carreras, D.E. Newman, I. Dobson
  Forty-eighth Hawaii International Conference on System Sciences, Kauai, HI January 2015

The impact of local power balance and link reliability on blackout risk in heterogeneous power transmission grids
B.A. Carreras, D.E. Newman, I. Dobson, J. M. Reynolds Barredo
Forty-ninth Hawaii International Conference on System Sciences, Kauai, HI January 2016

The interplay of network structure and dispatch solutions in power grid cascading failures
J. M. Reynolds-Barredo, D.E. Newman, B.A. Carreras,  I. Dobson
Chaos, vol. 26, no. 11, 113111, 2016
copyright 2016 American Institute of Physics; official link
Reynolds-Barredo et al, Chaos 26 (2016)


Validating the OPA cascading blackout model on a 19402 bus transmission network with both mesh and tree structures
B.A. Carreras, J. M. Reynolds Barredo, I. Dobson, D.E. Newman
Fifty-second Hawaii International Conference on System Sciences, Maui, HI January 2019

Critical behavior of power transmission network complex dynamics in the OPA model Critical behavior of power transmission network complex dynamics in the OPA model
B.A. Carreras, J. M. Reynolds Barredo, I. Dobson, D.E. Newman
Chaos, vol 29, Critical behavior of power transmission network complex dynamics in the OPA model 033103, 2019
copyright 2019 American Institute of Physics; official link
Carreras et al, Chaos 29 (2019)

risk of cascading failure,
power system simulations and probabilistic models

Cascading dynamics and mitigation assessment in power system disturbances
via a hidden failure model
 
J. Chen, J.S. Thorp, I. Dobson
International Journal of Electrical Power and Energy Systems, vol 27, no 4, May 2005, pp 318-326
doi:10.1016/j.ijepes.2004.12.003

Dynamical and probabilistic approaches to the study of blackout vulnerability
of the power transmission grid
B.A. Carreras, V.E. Lynch, D.E. Newman, I. Dobson
Thirty-seventh Hawaii International Conference on System Sciences, Hawaii, January 2004

A branching process approximation to cascading load-dependent system failure
I. Dobson, B.A. Carreras, D.E. Newman
Thirty-seventh Hawaii International Conference on System Sciences, Hawaii, January 2004

Probabilistic load-dependent cascading failure with limited component interactions
I. Dobson, B.A. Carreras, D.E. Newman
IEEE International Symposium on Circuits and System, Vancouver Canada, May 2004

A criticality approach to monitoring cascading failure risk and failure propagation in transmission systems
I. Dobson, B.A. Carreras, D.E. Newman
Electricity Transmission  in Deregulated Markets, conference at Carnegie-Mellon University, Pittsburgh PA, December 2004
 
A loading-dependent model of probabilistic cascading failure
I. Dobson, B.A. Carreras, D.E. Newman
Probability in the Engineering and Informational Sciences, vol 19, no 1, Jan 2005, pp 15-32

Estimating failure propagation in models of cascading blackouts
I. Dobson, B.A. Carreras, V.E. Lynch, B. Nkei, D.E. Newman
Probability in the Engineering and Informational Sciences,  vol 19,  no 4, October 2005, pp 475-488
(journal publication of conference paper in Probability Methods Applied to Power Systems, Ames Iowa, 2004)

An estimator of propagation of cascading failure
I. Dobson, K.R. Wierzbicki, B.A. Carreras, V.E. Lynch, D.E. Newman
Thirty-ninth Hawaii International Conference on System Sciences, Kauai, Hawaii, January 2006

An approach to statistical estimation of cascading failure propagation in blackouts
K.R. Wierzbicki, I. Dobson
CRIS, Third International Conference on Critical Infrastructures, Alexandria VA, Sept. 2006

Criticality in a cascading failure blackout model
D.P. Nedic, I. Dobson, D.S. Kirschen, B.A. Carreras, V.E. Lynch
International Journal of Electrical Power and Energy Systems, vol 28, 2006, pp 627-633
(journal publication of paper in 15th Power Systems Computation Conference, Liege Belgium, August 2005)
doi:10.1016/j.ijepes.2006.03.006

Where is the edge for cascading failure?: challenges and opportunities for quantifying blackout risk
I. Dobson
IEEE Power Engineering Society General Meeting, Tampa FL USA, June 2007

Analysis of cascading infrastructure failures
I. Dobson
chapter for Wiley handbook of science and technology for homeland security, 2010

Propagation of load shed in cascading line outages simulated by OPA
J. Kim, I. Dobson
COMPENG 2010: Complexity in Engineering, Rome Italy, February 2010

Testing branching process estimators of cascading failure with data from a simulation of transmission line outages
Link above is author's preprint. The definitive version is available at www.blackwell-synergy.com
I. Dobson, J. Kim, K.R. Wierzbicki
Risk Analysis, vol 30, no 4, pp. 650-662, 2010

Approximating a loading-dependent cascading failure model with a branching process
J. Kim, I. Dobson
  IEEE Transactions on Reliability, vol 59, no 4, Dec. 2010, pp 691-699

Estimating propagation and distribution of load shed in simulations of cascading blackouts
J. Kim, K.R. Wierzbicki, I. Dobson, R.C. Hardiman
IEEE Systems Journal, vol 6, no 3, September 2012, pp 548-557

Cascading stall of many induction motors in a simple system
H. Wu, I. Dobson
IEEE Transactions on Power Systems, vol 27, no 4, Nov 2012
 pp 2116-2126, DOI 10.1109/TPWRS.2012.2189420

Analysis of cascading infrastructure failures
I. Dobson
chapter for Wiley Handbook of Science and Technology for Homeland Security, 2010

"Dual graph" and "random chemistry" methods for cascading failure analysis
P. Hines, I. Dobson, E. Cotilla-Sanchez, M. Eppstein
  Forty-sixth Hawaii International Conference on System Sciences, Maui, Hawaii, January 2013

Splitting method for speedy simulation of cascading blackouts
J. Kim, J.A. Bucklew, I. Dobson
IEEE Transactions on Power Systems, vol 28, no 3, Aug 2013
pp 3010-3017, DOI 10.1109/TPWRS.2012.2231887

How many occurrences of rare blackout events are needed to estimate event probability?
I. Dobson, B.A. Carreras, D.E. Newman
IEEE Transactions on Power Systems, vol 28, no 3, Aug 2013
pp 3509-3510, DOI 10.1109/TPWRS.2013.2242700

Towards estimating the statistics of simulated cascades of outages with branching processes
J. Qi, I. Dobson, S. Mei
IEEE Transactions on Power Systems, vol 28, no 3, Aug 2013
pp 3410-3419, DOI 10.1109/TPWRS.2012.2243479

Analysis of induction motor cascading stall in a simple system based on the CASCADE model
H. Wu, I. Dobson
IEEE Transactions on Power Systems, vol 28, no 3, Aug 2013
pp 3184-3193, DOI 10.1109/TPWRS.2012.2244924

Cascading power outages propagate locally in an influence graph that is not the actual grid topology
P.D.H. Hines, I. Dobson, P. Rezaei
  IEEE Transactions on Power Systems, vol 32, no 2, March 2017, pp 958-967

Cascading blackout overall structure and some implications for sampling and mitigation
I. Dobson, D.E. Newman
International Journal Electrical Power and Energy Systems
vol 86, March 2017, pp 29-32. http://dx.doi.org/10.1016/j.ijepes.2016.09.006

Towards incorporating protection and uncertainty into cascading failure simulation and analysis
I. Dobson, A. Flueck, S. Aquiles-Perez, S. Abhyankar, J. Qi
Probability Methods Applied to Power Systems, Boise, ID, June 2018

Benchmarking quasi-steady state cascading outage analysis methodologies
IEEE PES Cascading Failure Working Group
Probability Methods Applied to Power Systems, Boise, ID, June 2018

analyzing data from real blackouts

Evidence for self-organized criticality in a time series of electric power system blackouts
B.A. Carreras, D.E. Newman, I. Dobson, A.B. Poole
  IEEE Transactions on Circuits and Systems I, vol 51, no 9, Sept. 2004, pp 1733-1740

Branching process models for the exponentially increasing portions of cascading failure blackouts
I. Dobson, B.A. Carreras, D.E. Newman
Thirty-eighth Hawaii International Conference on System Sciences, Hawaii, Jan. 2005

Using transmission line outage data to estimate cascading failure propagation in an electric power system
H. Ren, I. Dobson
IEEE Transactions on Circuits and Systems Part II, vol 55,  no 9,  Sept. 2008, pp 927-931

Number and propagation of line outages in cascading events in electric power transmission systems
I. Dobson, B.A. Carreras
48th Allerton Conference, UIUC, IL USA, Sept. 2010

Estimating the propagation and extent of cascading line outages from utility data with a branching process
I. Dobson
IEEE Transactions on Power Systems, vol 27, no 4, Nov 2012
 pp 2146-2155, DOI 10.1109/TPWRS.2012.2190112

Obtaining statistics of cascading line outages spreading in an electric transmission network from standard utility data
I. Dobson, B.A. Carreras, D.E. Newman, J.M. Reynolds-Barredos
IEEE Transactions on Power Systems, vol 31, no 6, November 2016, pp 4831-4841

North American blackout time series statistics and implications for blackout risk
B.A. Carreras, D.E. Newman, I. Dobson
IEEE Transactions on Power Systems, vol 31, no 6, November 2016, pp 4406-4414

Comparing a transmission planning study of cascading with historical line outage data
M. Papic, I. Dobson
PMAPS conference, Beijing China, October 2016

Heavy-tailed transmission line restoration times observed in utility data
S. Kancherla, I. Dobson
IEEE Transactions on Power Systems, vol 33, no 1, January 2018, pp 1145-1147

Exploring cascading outages and weather via processing historic data
I. Dobson, N.K. Carrington, K. Zhou, Z. Wang, B.A. Carreras, J.M. Reynolds-Barredos
51st Hawaii International Conference on System Sciences, Hawaii, Jan. 2018

Can an influence graph driven by outage data determine transmission line upgrades
that mitigate cascading blackouts?
K. Zhou, I. Dobson, P.D.H. Hines, Z. Wang
Probability Methods Applied to Power Systems, Boise, ID, June 2018

Finding a Zipf distribution and cascading propagation metric in utility line outage data
I. Dobson
ArXiv preprint, August 2018

A Markovian influence graph formed from utility line outage data to mitigate large cascades
Kai Zhou, Ian Dobson, Zhaoyu Wang, Alexander Roitershtein, Arka P. Ghosh
  IEEE Transactions on Power Systems, vol 35, no 4, July 2020, pp 3224-3235

Bayesian estimates of transmission line outage rates that consider line dependencies
K Zhou, JR Cruise, CJ Dent, I Dobson, L Wehenkel, Z Wang, AL Wilson
  IEEE Transactions on Power Systems, vol 36, no 2, March 2021, pp 1095-1106

Observed acceleration of cascading outages
M Noebels, I Dobson, M Panteli
  IEEE Transactions on Power Systems, vol 36, no 4 July 2021, pp 3821-3823

top of page

UTILITY ELECTRIC POWER SYSTEMS

synchrophasors and angles across areas for smart grid

Combining phasor measurements to monitor cutset angles
I. Dobson, M. Parashar, C. Carter
best paper award, 43rd Hawaii International Conference on System Sciences, Kauai HI, Jan. 2010

A cutset area concept for phasor monitoring
I. Dobson, M. Parashar
  IEEE PES General Meeting, Minneapolis July 2010

New angles for monitoring areas
I. Dobson
 IREP Symposium: Bulk Power System Dynamics and Control VIII,  Buzios, Brazil, August 2010

Voltages across an area of a network
I. Dobson
  IEEE Transactions on Power Systems vol. 27, no. 2, May 2012, pp. 993-1002

Locating line outages in a specific area of a power system with synchrophasors
H. Sehwail, I. Dobson
  North American Power Symposium, University of Illinois, Urbana-Champaign IL, September 2012 

Applying synchrophasor computations to a specific area
H. Sehwail, I. Dobson
  IEEE Transactions on Power Systems, vol 28, no 3, Aug 2013
pp 3503-3504, DOI 10.1109/TPWRS.2013.2248957

Area angles monitor area stress by responding to line outages
A. Darvishi, I. Dobson, A. Oi, C. Nakazawa
  NAPS North American Power Symposium, Manhattan KS USA September 2013

Synchrophasor monitoring of single line outages via area angle and susceptance
A. Darvishi, I. Dobson
  NAPS North American Power Symposium, Pullman WA, September 2014

Monitoring voltage collapse margin by measuring the area voltage across several transmission lines with synchrophasors
L. Ramirez, I. Dobson
  IEEE Power and Energy Society General Meeting, National Harbor MD, July 2014

Monitoring voltage collapse margin with synchrophasors across transmission corridors with multiple lines and multiple contingencies
L. Ramirez, I. Dobson
IEEE Power and Energy Society General Meeting, Denver CO, July 2015

Threshold-based monitoring of cascading outages with PMU measurements of area angle
A. Darvishi, I. Dobson
  ArXiv preprint November 2014
IEEE Transactions on Power Systems, vol 31, no 3, May 2016, pp. 2116-2124.

On two-bus equivalents of transmission corridors
C.D. Vournas, L. Ramirez, I. Dobson
IEEE Transactions on Power Systems
, vol. 31, no. 3, May 2016, pp. 2497-2498

Real-time area angle monitoring using synchrophasors: a practical framework and utility deployment
W Ju, I Dobson, K Martin, K Sun, N Nayak, I Singh, H Silva-Saravia, A Faris, L Zhang, Y Wang
  IEEE Transactions on Smart Grid, vol 12, no 1, pp 859-870, January 2021

also see oscillations and PMU

voltage collapse blackouts

Towards a theory of voltage collapse in electric power systems
I. Dobson, H.-D. Chiang
Systems and Control Letters, Vol. 13, 1989, pp. 253-262

On voltage collapse in electric power systems
H.-D. Chiang, I. Dobson, R.J. Thomas, J.S. Thorp, L. Fekih-Ahmed
IEEE Trans. Power Systems, Vol. 5, No. 2, May 1990, pp. 601-611

Observations on the geometry of saddle node bifurcation
and voltage collapse in electric power systems
I. Dobson
IEEE Trans. Circuits and Systems, Part 1, Vol. 39, No. 3, March 1992, pp. 240-243

Point of collapse methods applied to AC/DC power systems
C.A. Canizares, F.L. Alvarado, C.L. DeMarco, I. Dobson, W.F. Long
IEEE Trans. Power Systems, Vol. 7., No. 2, May 1992, pp. 673-683

Voltage collapse in power systems
I. Dobson, H. Glavitsch, C.C. Liu, Y. Tamura, K. Vu
IEEE Circuits and Devices Magazine, vol. 8, no. 3, May 1992, pp. 40-45

Voltage collapse precipitated by the immediate change in stability
when generator reactive power limits are encountered
I. Dobson, L. Lu
IEEE Trans. Circuits and Systems, Part 1, vol. 39, no. 9, Sept. 1992, pp. 762-766

Q-V Curve interpretations of energy measures for voltage security
T.J. Overbye, I. Dobson, C.L. DeMarco
IEEE Trans. Power Systems, vol. 9, no. 1, Feb. 1994, pp. 331-340

Chapter 2: Basic Theoretical Concepts
I. Dobson, T. Van Cutsem, C. Vournas, C. DeMarco,
M. Venkatasubramanian, T. Overbye, C. Canizares
in Voltage Stability Assessment: Concepts, Practices and Tools
IEEE PES Power system stability subcommittee special publication
IEEE product number SP101PSS, ISBN 0780378695, 2002.

loading margin to voltage collapse

Computing an optimum direction in control space to avoid saddle node bifurcation
and voltage collapse in electric power systems
I. Dobson, L. Lu
IEEE Trans. Automatic Control, vol 37, no. 10, October 1992, pp. 1616-1620

Sensitivity of the loading margin to voltage collapse with respect to arbitrary parameters
S. Greene, I. Dobson, F.L. Alvarado
IEEE Trans. Power Systems, vol. 12, no. 1, February 1997, pp. 262-272

Contingency ranking for voltage collapse via sensitivities from a single nose curve
S. Greene, I. Dobson, F.L. Alvarado
IEEE Trans. Power Systems, vol. 14, no. 1, February 1999, pp. 232-240

The irrelevance of electric power system dynamics for the
loading margin to voltage collapse and its sensitivities
  I. Dobson
Nonlinear Theory and its Applications, IEICE, vol. 2, no. 3, July 2011, pp. 263-280

closest bifurcations in voltage collapse

(also see closest bifurcations )

New methods for computing a closest saddle node bifurcation
and worst case load power margin for voltage collapse
I. Dobson, L. Lu
IEEE Trans. Power Systems, vol. 8, no. 3, August 1993, pp. 905-913

Computation of closest bifurcations in power systems
F.L. Alvarado, I. Dobson, Y. Hu
IEEE Trans. Power Systems, vol. 9, no. 2, May 1994, pp. 918-928

oscillations and transient stability

(also see SSR )

Sensitivity of Hopf bifurcations to power system parameters
I. Dobson, F.L. Alvarado, C.L. DeMarco
31st IEEE Conference on Decision and Control, Tucson AZ, December 1992, pp. 2928-2933

Avoiding and suppressing oscillations, final report for PSerc project
I. Dobson, F.L. Alvarado, C.L. DeMarco, P. Sauer, S. Greene, H. Engdahl, J. Zhang
PSerc publication 00-01, December 1999, available from http://www.pserc.wisc.edu/

Is strong modal resonance a precursor to power system oscillations?
I. Dobson, J. Zhang, S. Greene, H. Engdahl, P.W. Sauer
IEEE Trans. Circuits and Systems, Part 1, vol. 48, no. 3, March 2001, pp. 340-349

Strong resonance effects in normal form analysis and subsynchronous resonance
I. Dobson
Bulk Power System Dynamics and Control V, August 26-31, 2001, Onomichi, Japan, pp. 563-574

Scaling of normal form analysis coefficients under coordinate change
I. Dobson, E. Barocio
IEEE Trans. Power Systems, vol. 19, no. 3, August 2004, pp. 1438-1444

Modifying eigenvalue interactions near weak resonance
V. Auvray, I. Dobson, L. Wehenkel
IEEE International Symposium Circuits & Systems, Vancouver Canada, May 2004, vol. 5, pp 992-995

Perturbations of weakly resonant power system electromechanical modes
I. Dobson, E. Barocio
IEEE Trans. Power Systems, vol. 20, no. 1, Feb. 2005, pp 330-337

Counterexamples to a method for identifying Hopf bifurcations without eigenvalue calculation
J. Arroyo, I. Dobson
IEEE Trans. Circuits and Systems-II, vol. 54, no. 5, May 2007, pp 432-434

Synchrony and your morning coffee
I. Dobson
News and Views article, Nature Physics, vol 9, no 3, March 2013, pp 133-134

A  formula for damping interarea  oscillations with generator redispatch
Sarai Mendoza-Armenta, I. Dobson
IREP Symposium-Bulk Power System Dynamics and Control IX, August 2013, Rethymnon, Greece

Applying a formula for generator redispatch to damp interarea oscillations using synchrophasors
Sarai Mendoza-Armenta, I. Dobson
IEEE Trans. Power Systems, vol 31, no 4, July 2016, pp 3119-3128

Sensitivity of transient stability critical clearing time
S. Sharma, S. Pushpak, V. Chinde, I. Dobson
IEEE Trans. Power Systems, vol 33, no 6, November 2018, pp 6476-6486

available transfer capability

Sensitivity of transfer capability margins with a fast formula
S. Greene, I. Dobson, F.L. Alvarado
IEEE Trans. Power Systems, vol. 17, no. 1, pp. 34-40, February 2002

Transfer capability calculator and tutorial web site
I. Dobson, S. Greene, R. Rajaraman, F.L. Alvarado, C.L. DeMarco,
M. Glavic, A. DeSouza, R. Zimmerman, R.J. Thomas et al.

Electric power transfer capability: Concepts, applications, sensitivity, uncertainty
I. Dobson, S. Greene, R. Rajaraman, C.L. DeMarco, F.L. Alvarado,
M. Glavic, J. Zhang, R. Zimmerman, PSerc publication 01-34, November 2001

Quantifying transmission reliability margin
J. Zhang, I. Dobson, F.L. Alvarado
International Journal of Electrical Power and Energy Systems, vol. 26, no. 9, pp. 697-702, 2004
doi:10.1016/j.ijepes.2004.05.002

climate change

Impact of extreme weather on power system blackouts and forced outages: new challenges
M. Kezunovic, I. Dobson, Y. Dong
Balkan Power Conference, Šibenik Croatia, September 2008

Key technical challenges for the electric power industry and climate change 
L.M. Beard, J.B. Cardell, I. Dobson, F. Galvan, D. Hawkins, W. Jewell, M. Kezunovic,  T.J. Overbye, P.K. Sen, D.J. Tylavsky
IEEE Trans. Energy Conversion, vol. 25, no.  2, pp. 465-473, June 2010
.


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POWER ELECTRONICS

simulation

Representation and simulation of AC/DC convertor systems using fixed and varying electrical axes
I. Dobson
IEE Proceedings, Part A, Vol. 134, No. 1, pp. 67-83, January 1987

Geometric description of bridge rectifier operational modes using regular polygons,
I. Dobson
IEE Proceedings, Part A, Vol. 134, No. 1, pp. 85-88, January 1987

stability and nonlinear dynamics
(mainly utility power electronics)

Dynamic response of a thyristor controlled switched capacitor
S.G. Jalali, R.H. Lasseter, I. Dobson
IEEE Trans. Power Delivery, vol. 9, no. 3, July 1994, pp.1609-1615

Damping and resonance in a high power switching circuit
I. Dobson, S.G. Jalali, R. Rajaraman
chapter in Systems and Control Theory for Power Systems
(eds. J.H. Chow, P.V. Kokotovic, R.J. Thomas)
IMA volume 64 in mathematics and its applications, Springer Verlag, pp. 137-156, 1995

Damping and incremental energy in thyristor switching circuits
R. Rajaraman, I. Dobson
IEEE International Symposium on Circuits and Systems, Seattle, Washington, May 1995, pp.~291-294

Stability of ideal thyristor and diode switching circuits
I. Dobson
IEEE Trans. Circuits and Systems, Part 1, vol. 42, no. 9, September 1995, pp. 517-529

Switching time bifurcations in a thyristor controlled reactor
S.G. Jalali, I. Dobson, R.H. Lasseter, G. Venkataramanan
IEEE Trans. Circuits and Systems, Part 1, vol. 43, no. 3, March 1996, pp. 209-218

Nonlinear dynamics and switching time bifurcations of a thyristor controlled reactor circuit
R. Rajaraman, I. Dobson, S. Jalali
IEEE Trans. Circuits and Systems, Part 1, vol. 43, no. 12, December 1996, pp. 1001-1006

Stability and nonlinear dynamics in thyristor and diode circuits
I. Dobson
Chapter 6 in Nonlinear Phenomena in Power Electronics:
Attractors, Bifurcations, Chaos, and Nonlinear Control
(eds. S. Banerjee, G.C. Verghese), ISBN 0780353838, IEEE Press 2001


subsynchronous resonance

(also see oscillations )
Computing the damping of subsynchronous oscillations
due to a thyristor controlled series capacitor
R. Rajaraman, I. Dobson, R.H. Lasseter, Y. Shern
IEEE Trans. Power Delivery, vol. 11, no. 2, April 1996, pp. 1120--1127

Damping estimates of subsynchronous and power swing oscillations
in power systems with thyristor switching devices
R. Rajaraman, I. Dobson
IEEE Trans. Power Systems, vol. 11, no. 4, November 1996, pp. 1926-1930

Justification of torque per unit velocity methods of analyzing subsynchronous resonance
and a swing mode in power systems
R. Rajaraman, I. Dobson
IEEE Trans. Circuits and Systems, Part 1
vol. 45, no. 10, October 1998, pp. 1109-1113

sigma-delta modulators

Interpolative sigma delta modulators for high frequency power electronic applications,
G.A. Luckjiff, I. Dobson, D. Divan
Power Electronics Specialists Conference, Atlanta, Georgia, June 1995, pp. 444-449

Modulator for resonant link converters
D.M. Divan, I. Dobson, G.A. Luckjiff
US patent 5,619,406, April 1997

Hexagonal sigma-delta modulation
G.A. Luckjiff, I. Dobson
IEEE Trans. Circuits and Systems- Part 1, vol. 50, no. 8, August 2003, pp. 991-1005

Hexagonal sigma delta modulators in power electronics
G. Luckjiff, I. Dobson
IEEE Trans. Power Electronics, vol. 20, no. 5, September 2005, pp. 1075-1083

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NONLINEAR DYNAMICS

(also see topics in voltage collapse and power electronics )

fractal basin boundaries

Describing fractal basin boundaries in a forced oscillator
I. Dobson
PhD thesis, Cornell University, 1989. Advisor David F. Delchamps

Formation of a fractal basin boundary in a forced oscillator
I. Dobson
IEEE Trans. Circuits and Systems, Vol. 36, No. 6, pp. 866-872, June 1989

Truncated fractal basin boundaries in the pendulum with nonperiodic forcing
I. Dobson, D.F. Delchamps
Journal of Nonlinear Science, vol. 4, 1994, pp. 315-328

chaos and stability in artificial satellites

Closest bifurcation analysis and robust stability design of flexible satellites
A. Mazzoleni, I. Dobson
Journal of Guidance, Control and Dynamics, vol. 18, no. 2, March-April 1995, pp. 333-339

Instability tests, Liapunov's direct method and exact stability boundaries for flexible satellites
A. Mazzoleni, I. Dobson
Journal of Guidance, Control and Dynamics, vol. 18, no. 3, May-June 1995, pp. 426-432

Chaos in a spacecraft passive attitude maneuver due to time-periodic perturbations
G. Gray, I. Dobson, D.C. Kammer
Journal of Applied Mechanics, vol. 63, no. 2, June 1996, pp. 501-508

Heteroclinic bifurcations in rigid bodies containing internally moving parts and a viscous damper
G. Gray, D.C. Kammer, I. Dobson, A.J. Miller
Journal of Applied Mechanics, vol. 66, no. 3, September 1999, pp. 720-728

closest bifurcations

(also see applications to voltage collapse and satellites )

Computing a closest bifurcation instability in multidimensional parameter space
I. Dobson
Journal of Nonlinear Science, vol. 3, no. 3, 1993, pp. 307-327

Distance to bifurcation in multidimensional parameter space:
margin sensitivity and closest bifurcations

I. Dobson
chapter in Bifurcation Control, Theory and Application, editors G. Chen, D.J. Hill, X. Yu
Lecture Notes in Control and Information Sciences, Vol. 293
ISBN 3-540-40341-8, Springer Verlag 2003

miscellaneous

A first analysis of stability when a constraint on the system state is encountered
I. Dobson
International Symposium on Circuits and Systems, Singapore, June 1991, pp. 1224-1227

Mechanisms for nonthermal effects on ionic mobility during microwave processing of crystalline solids
J.H. Booske, R.F. Cooper, I. Dobson
Journal of Materials Research, vol. 7, no. 2, February 1992, pp. 495-501

traveling wave tube amplifiers

The multifrequency spectral Eulerian (MUSE) model of a traveling wave tube
J.G. Wohlbier, J.H. Booske, I. Dobson
IEEE Transactions on Plasma Science, vol. 30, no. 3, June 2002, pp. 1063-1075

Generation and growth rates of nonlinear distortions in a traveling wave tube
J.G. Wohlbier, I. Dobson, J.H. Booske
Physical Review E,  vol. 66, article 056504, November 2002

On the physics of harmonic injection in a traveling wave tube
J.G. Wohlbier, J.H. Booske, I. Dobson
IEEE Transactions on Plasma Science, vol. 32, no. 3, June 2004, pp. 1073-1085


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last updated August 2024