1185 Perry STR
428 Whittemore Hall
Blacksburg, VA 24061
Tel: (540) 231-1672
Email: lastname@vt.edu

Panorama from San Gorgonio Pass Wind Farm, CA, by Gregg M. Erickson.

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Preprints

  1. M. K. Singh, V. Kekatos, and C.-C. Liu, "Optimal Distribution System Restoration with Microgrids and Distributed Generators," IEEE Power and Energy Society General Meeting (PES-GM)., Atlanta, GA, Aug. 2019. [pdf]
  2. S. Taheri, V. Kekatos, and H. Veeramachaneni, "Energy Storage Sizing in Presence of Uncertainty," IEEE Power and Energy Society General Meeting (PES-GM)., Atlanta, GA, Aug. 2019. [pdf]
  3. M. K. Singh and V. Kekatos, "Natural Gas Flow Equations: Uniqueness and an MI-SOCP Solver," American Control Conference (ACC), Philadelphia, PA, July 2019, (submitted). [arXiv]
  4. S. Bhela, D. Deka, H. Nagarajan, and V. Kekatos, "Designing Power Grid Topologies for Minimizing Network Disturbances: An Exact MILP Formulation," American Control Conference (ACC), Philadelphia, PA, July 2019, (submitted).
  5. S. Taheri and V. Kekatos, "Power Flow Solvers for Direct Current Networks," IEEE Trans. on Smart Grid, (submitted). [arXiv, pdf]
  6. S. Bhela, V. Kekatos, and S. Veeramachaneni, "Smart Inverter Grid Probing for Learning Loads: Part I -- Identifiability Analysis," IEEE Trans. on Power Systems, (under review). [arXiv, pdf]
  7. S. Bhela, V. Kekatos, and S. Veeramachaneni, "Smart Inverter Grid Probing for Learning Loads: Part II -- Probing Injection Design," IEEE Trans. on Power Systems, (under review). [arXiv, pdf]
  8. M. K. Singh and V. Kekatos, "Optimal Scheduling of Water Distribution Systems," IEEE Trans. on Control of Network Systems, (submitted). [arXiv, pdf]
  9. G. Cavraro and V. Kekatos, "Probing for Distribution Grid Topology Processing," IEEE Trans. on Control of Network Systems, (under review). [arXiv, pdf]

Book chapters

  1. V. Kekatos, G. Wang, H. Zhu, and G. B. Giannakis, "PSSE Redux: Convex Relaxation, Decentralized, Robust, and Dynamic Approaches," in Advances in Power System State Estimation, Ed. Mo El-Hawary. [arXiv]

Journals

  1. G. Cavraro and V. Kekatos, "Graph Algorithms for Topology Identification using Power Grid Probing," IEEE Control Systems Letters, Vol. 2, No. 4, pp. 689-694, Oct 2018. [arXiv, pdf]
  2. S. Gupta, V. Kekatos, and W. Saad, "Optimal Real-Time Coordination of Energy Storage Units as a Voltage-Constrained Game," IEEE Trans. on Smart Grid, 2018 (early access). [arXiv, pdf]
  3. G. Cavraro, V. Kekatos, and S. Veeramachaneni, "Voltage Analytics for Power Distribution Network Topology Verification," IEEE Trans. on Smart Grid, 2018 (early access). [arXiv, pdf]
  4. S. Bhela, V. Kekatos, and S. Veeramachaneni, "Enhancing Observability in Distribution Grids using Smart Meter Data," IEEE Trans. on Smart Grid, Vol. 9, No. 6, pp. 5953-5961, Nov 2018. [arXiv, pdf]
  5. L. M. Lopez-Ramos, V. Kekatos, A. G. Marques, and G. B. Giannakis, "Two-Timescale Stochastic Dispatch of Smart Distribution Grids," IEEE Trans. on Smart Grid, Vol. 9, No. 5, pp. 4282-4292, Sep 2018. [arXiv, pdf]
  6. L. Zhang, V. Kekatos, and G. B. Giannakis, "Scalable Electric Vehicle Charging Protocols," IEEE Trans. on Power Systems, Vol. 32, No. 2, pp. 1451-1462, Mar. 2017. [arXiv, pdf]
  7. G. Wang, V. Kekatos, A.-J. Conejo, and G. B. Giannakis, "Ergodic Energy Management Leveraging Resource Variability in Distribution Grids," IEEE Trans. on Power Systems, Vol. 31, No. 6, pp. 4765-4775, Nov. 2016. [arXiv]
  8. V. Kekatos, L. Zhang, G. B. Giannakis, and R. Baldick, "Voltage Regulation Algorithms for Multiphase Power Distribution Grids," IEEE Trans. on Power Systems, Vol. 31, No. 5, pp. 3913-3923, Sep. 2016. [arXiv, pdf]
  9. D. Berberidis, V. Kekatos, and G. B. Giannakis, "Online Censoring for Large-Scale Regressions with Application to Streaming Big Data," IEEE Trans. on Signal Processing, Vol. 64, No. 15, pp. 3854-3867, Aug. 2016. [arXiv, pdf]
  10. V. Kekatos, G. B. Giannakis, and R. Baldick, "Online Energy Price Matrix Factorization for Power Grid Topology Tracking," IEEE Trans. on Smart Grid, Vol. 7, No. 7, pp. 1239-1248, May 2016. [arXiv, pdf]
  11. V. Kekatos, G. Wang, A.-J. Conejo, and G. B. Giannakis, "Stochastic Reactive Power Management in Microgrids with Renewables," IEEE Trans. on Power Systems, Vol. 30, No. 6, pp. 3386-3395, Nov. 2015. [arXiv, pdf]
  12. V. Kekatos, Y. Zhang, and G. B. Giannakis, "Electricity Market Forecasting via Low-Rank Multi-Kernel Learning," IEEE Journal of Selected Topics in Signal Process.; Vol. 8, No. 6, pp. 1182-1193, Dec. 2014. [arXiv, pdf]
  13. G. B. Giannakis, V. Kekatos, N. Gatsis, S.-J. Kim, H. Zhu, and B. F. Wollenberg, "Monitoring and Optimization for Power Grids: A Signal Processing Perspective," IEEE Signal Processing Mag.; Vol. 30, No. 5, pp. 107-128, Sep. 2013. [arXiv, pdf]
  14. V. Kekatos and G. B. Giannakis, "Distributed Robust Power System State Estimation," IEEE Trans. on Power Systems; Vol. 28, No. 2, pp. 1617-1626, May 2013. [arXiv, pdf]
  15. V. Kekatos, G. B. Giannakis, and B. Wollenberg, "Optimal Placement of Phasor Measurement Units via Convex Relaxation," IEEE Trans. on Power Systems, Vol. 27, No. 3, pp. 1521-1530, Aug. 2012. [pdf]
  16. P. A. Forero, V. Kekatos, and G. B. Giannakis, "Robust Clustering Using Outlier-Sparsity Regularization," IEEE Trans. on Signal Processing, Vol. 60, No. 8, pp. 4163-4177, Aug. 2012. [pdf]
  17. V. Kekatos and G. B. Giannakis, "Sparse Volterra and Polynonial Regression Models: Recoverability and Estimation," IEEE Trans. on Signal Processing, Vol. 59, No. 12, pp. 5907-5920, Dec. 2011. [arXiv, pdf]
  18. V. Kekatos and G. B. Giannakis, "From Sparse Signals to Sparse Residuals for Robust Sensing," IEEE Trans. on Signal Processing, Vol. 59, No. 7, pp. 3355-3368, July 2011. [arXiv, pdf]
  19. A. Lalos, V. Kekatos, and K. Berberidis, "Adaptive Conjugate Gradient DFEs for Wideband MIMO Systems," IEEE Trans. on Signal Processing, Vol. 57, No. 6, pp. 2406-2412, June 2009. [pdf]
  20. V. Kekatos, A. A. Rontogiannis, and K. Berberidis, "Cholesky Factorization-Based Adaptive BLAST DFE for Wideband MIMO Channels," EURASIP Journal on Advances in Signal Processing, Vol. 2007, Art. ID 45789, pp. 1-11. [pdf]
  21. A. A. Rontogiannis, V. Kekatos, and K. Berberidis, "A Square-Root Adaptive V-BLAST Algorithm for Fast Time-Varying MIMO Channels," IEEE Signal Processing Letters, Vol. 13, No. 5, pp. 265-268, May 2006. [pdf]
  22. V. Kekatos, A. A. Rontogiannis, and K. Berberidis, "A Robust Parametric Technique for Multipath Channel Estimation in the Uplink of a DS-CDMA System," EURASIP Journal on Wireless Communications and Networking, Vol. 2006, Art. ID 47938, pp. 1-12. [pdf]

Conferences

  1. A. Garg, M. Jalali, V. Kekatos, and N. Gatsis, "Kernel-Based Learning for Smart Inverter Control," IEEE Global Conf. on Signal and Inf. Process. (GlobalSIP), Symposium on Smart Grids, Anaheim, CA, Nov. 2018. [arXiv, pdf]
  2. S. Bhela, V. Kekatos, and S. Veeramachaneni, "Power Grid Probing for Load Learning: Identifiability over Multiple Time Instances," IEEE Workshop on Comp. Adv. in Multi-Sensor Adaptive Proc. (CAMSAP), Curacao, Dec. 2017. [pdf]
  3. S. Bhela, V. Kekatos, and S. Veeramachaneni, "Power Distribution System Observability with Smart Meter Data," IEEE Global Conf. on Signal and Inf. Process. (GlobalSIP), Symposium on Smart Grids, Montreal, Canada, Nov. 2017. [pdf]
  4. A. Ojha, V. Kekatos, and R. Baldick, "Solving the Natural Gas Flow Problem using Semidefinite Program Relaxation," IEEE Power and Energy Society General Meeting (PES-GM)., Chicago, IL, July 2017. [pdf]
  5. S. Bhela, V. Kekatos, L. Zhang, and S. Veeramachaneni, "Enhancing Observability in Power Distribution Grids," IEEE Intl. Conf. on Acoustics, Speech, and Signal Process. (ICASSP), New Orleans, LA, Mar. 2017. [pdf]
  6. S. Gupta and V. Kekatos, "Real-Time Operation of Heterogeneous Energy Storage Units," IEEE Global Conf. on Signal and Inf. Process. (GlobalSIP), Symposium on Smart Grids, Washington, DC, Dec. 2016. [pdf]
  7. L. Zhang, V. Kekatos, and G. B. Giannakis, "A Generalized Frank-Wolfe Approach to Decentralized Electric Vehicle Charging," IEEE Conf. on Decision and Control (CDC), Las Vegas, NV, Dec. 2016; (invited). [pdf]
  8. G. Wang, V. Kekatos, and G. B. Giannakis, "Stochastic Energy Management in Distribution Grids," IEEE Intl. Conf. on Acoustics, Speech, and Signal Process. (ICASSP), Shanghai, China, Apr. 2016. [pdf]
  9. L. M. Lopez-Ramos, V. Kekatos, A. G. Marques, and G. B. Giannakis, "Microgrid Dispatch and Price of Reliability Using Stochastic Approximation," IEEE Global Conf. on Signal and Inf. Process. (GlobalSIP), Orlando, FL, Dec. 2015; (student travel award). [pdf]
  10. V. Kekatos, L. Zhang, G. B. Giannakis, and R. Baldick, "Fast Voltage Regulation in Single-Phase Distribution Grids," IEEE Smart Grid Communications, Miami, FL, Nov. 2015. [pdf]
  11. G. Wang, D. Berberidis, V. Kekatos, and G. B. Giannakis, "Online Reconstruction from Big Data via Compressive Censoring," IEEE Global Conf. on Signal and Inf. Process. (GlobalLSIP)., Atlanta, GA, Dec. 2014.
  12. D. Berberidis, G. Wang, G. B. Giannakis, and V. Kekatos, "Adaptive Estimation from Big Data via Censored Stochastic Approximation," Asilomar Conf. on Signals, Systems, and Computers., Pacific Grove, CA, Nov. 2014.
  13. V. Kekatos, G. Wang, and G. B. Giannakis, "Stochastic Loss Minimization for Power Distribution Networks," IEEE North American Power Symposium (NAPS), Pullman, WA, Sep. 2014. [pdf]
  14. V. Kekatos, G. B. Giannakis, and R. Baldick, "Grid Topology Identification using Electricity Prices," IEEE Power and Energy Society General Meeting (PES-GM)., Washington, DC, July 2014; (best papers session). [arXiv]
  15. V. Kekatos, Y. Zhang, and G. B. Giannakis, "Kernel Selection for Power Market Inference via Block Successive Upper Bound Minimization," IEEE Int. Conf. on Acoustics, Speech, and Signal Process. (ICASSP), Florence, Italy, May 2014. [pdf]
  16. V. Kekatos and G. B. Giannakis, "Grid Topology Inference and Spatio-temporal Forecasting of Electricity Prices," Information Theory and Applications Workshop., San Diego, CA, Feb. 2014; (invited).
  17. V. Kekatos, E. Vlachos, D. Ampeliotis, G. B. Giannakis, and K. Berberidis, "A decentralized approach to generalized power system state estimation," IEEE Workshop on Comp. Adv. in Multi-Sensor Adaptive Proc. (CAMSAP), Saint Martin, Dec. 2013. [pdf]
  18. V. Kekatos, Y. Zhang, and G. B. Giannakis, "Low-Rank Kernel Learning for Electricity Market Inference," Asilomar Conf. on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2013. [pdf]
  19. K. Slavakis, Y. Kopsinis, S. Theodoridis, G. B. Giannakis, and V. Kekatos, "Generalized iterative thresholding for sparsity-aware online Volterra system identification," Intl. Symposium on Wireless Communication Systems (ISWCS), Ilmenau, Germany, Aug. 2013. [pdf]
  20. Y. Zhang, N. Gatsis, V. Kekatos, and G. B. Giannakis, "Risk-Aware Management of Distributed Energy Resources," Intl. Conf. on Digital Signal Processing (DSP), Santorini, Greece, Jul. 2013. [arXiv]
  21. V. Kekatos, S. Veeramachaneni, M. Light, and G. B. Giannakis, "Day-Ahead Electricity Market Forecasting," IEEE PES Innovative Smart Grid Technologies (ISGT), Washington, DC, Feb. 2013. [pdf]
  22. V. Kekatos and G. B. Giannakis, "Decentralized Power System State Estimation," IEEE GLOBECOM, Anaheim, CA, Dec. 2012. [pdf]
  23. V. Kekatos and G. B. Giannakis, "Joint Power System State Estimation and Breaker Status Identification," IEEE North American Power Symposium (NAPS), Urbana-Champaign, IL, Sep. 2012. [pdf]
  24. V. Kekatos and G. B. Giannakis, "A Convex Relaxation Approach to Optimal Placement of Phasor Measurement Units," IEEE Workshop on Comp. Adv. in Multi-Sensor Adaptive Proc. (CAMSAP), San Juan, Puerto Rico, Dec. 2011. [pdf]
  25. V. Kekatos and G. B. Giannakis, "Compressed Sensing for Volterra and Polynomial Regression Models," European Signal Proc. Conf. (EUSIPCO), Barcelona, Spain, Aug. 2011. [pdf]
  26. P. A. Forero, V. Kekatos, and G. B. Giannakis, "Outlier-Aware Robust Clustering," IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP), Prague, Czech Republic, May 2011. [pdf]
  27. G. B. Giannakis, G. Mateos, S. Farahmand, V. Kekatos, and H. Zhu, "USPACOR: Universal Sparsity-Controlling Outlier Rejection," IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP), Prague, Czech Republic, May 2011. [pdf]
  28. V. Kekatos and G. B. Giannakis, "Robust Layered Sensing: From Sparse Signals to Sparse Residuals," of 44th Asilomar Conf. on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2010. [pdf]
  29. V. Kekatos and G. B. Giannakis, "Selecting Reliable Sensors via Convex Optimization," IEEE Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Marrakech, Morocco, June 2010. [pdf]
  30. V. Kekatos, D. Angelosante, and G.B. Giannakis, "Sparsity-Aware Estimation of Nonlinear Volterra Kernels," IEEE Workshop on Comp. Adv. in Multi-Sensor Adaptive Proc. (CAMSAP), Aruba, Dutch Antilles, Dec. 2009. [pdf]
  31. V. Kekatos, A. Lalos, and K. Berberidis, "Adaptive Conjugate Gradient DFEs for Wideband MIMO Systems using Galerkin Projections," IEEE Vehicular Technology Conf. (VTC), Baltimore, MD, Oct. 2007. [pdf]
  32. V. Kekatos, K. Berberidis, and A. A. Rontogiannis, "A Block Adaptive Frequency Domain MIMO DFE for Wideband Channels," IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP), Honolulu, HI, Apr. 2007. [pdf]
  33. A. A. Rontogiannis, V. Kekatos, and K. Berberidis, "An Adaptive Decision Feedback Equalizer for Time-Varying Frequency Selective MIMO Channels," IEEE Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Cannes, France, July 2006. [pdf]
  34. A. A. Rontogiannis, V. Kekatos, and K. Berberidis, "A Square-Root Adaptive V-BLAST Algorithm for Fast Time-Varying MIMO Channels," IEEE Int. Conf. on Communications (ICC), Istanbul, Turkey, June 2006. [pdf]
  35. A. Kounoudes, V. Kekatos, and S. Mavromoustakos, "Voice Biometric Authentication for Enhancing Internet Service Security", IEEE Intl. Conf. on Inf. Comm. Tech. (ICCT), Oct. 2006.
  36. V. Kekatos, A. A. Rontogiannis, and K. Berberidis, "A Robust Method for Estimating Multipath Channel Parameters in the Uplink of a DS-CDMA System", IEEE Vehicular Technology Conf. (VTC), Stockholm, Sweeden, June 2005. [pdf]