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## Preprints

- S. Gupta, S. Misra, D. Deka, and V. Kekatos,
"DNN-based Policies for Stochastic AC-OPF,"
*Power Systems Computation Conference (PSCC)*, June, 2022, Porto, Portugal. (submitted October 2021). [pdf] - M. Jalali, V. Kekatos, S. Bhela, H. Zhu, and V. Centeno,
"Inferring Power System Dynamics from Synchrophasor Data using Gaussian Processes,"
*IEEE Trans. on Power Systems*, (submitted May 2021). [arXiv, pdf] - S. Gupta, V. Kekatos, and M. Jin,
"Controlling Smart Inverters using Proxies: A Chance-Constrained DNN-based Approach,"
*IEEE Trans. on Smart Grid*, (revised August 2021). [arXiv, pdf] - S. Liu, H. Zhu, and V. Kekatos,
"A Dynamic Response Recovery Framework Using Ambient Synchrophasor Data,"
*IEEE Trans. on Power Systems*, (submitted July 2021). [arXiv] - M. K. Singh, V. Kekatos, and G. B. Giannakis,
"Learning to Solve the AC-OPF using Sensitivity-Informed Deep Neural Networks,"
*IEEE Trans. on Power Systems*, (revised July 2021). [arXiv, pdf]

## Book chapters

- G. Cavraro, V. Kekatos, L. Zhang, and G. B. Giannakis,
"Learning Power Grid Topologies,"
in
*Advanced Data Analytics for Power Systems*, Ed. A. Tajer, S. Perlaza, and V. Poor. [pdf] - 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

- S. Taheri, V. Kekatos, and H. Veeramachaneni,
"Strategic Investment in Energy Markets: A Multiparametric Programming Approach,"
*IEEE Trans. on Power Systems*, (to appear). [arXiv, pdf, code] - S. Bhela, H. Nagarajan, D. Deka, and V. Kekatos,
"Efficient Topology Design Algorithms for Power Grid Stability,"
*IEEE Control Systems Letters*, Vol. 6, pp. 1100-1105, June 2021. [arXiv, pdf] - S. Taheri, M. Jalali, V. Kekatos, and L. Tong,
"Fast Probabilistic Hosting Capacity Analysis for Active Distribution Systems,"
*IEEE Trans. on Smart Grid*, Vol. 12, No. 3, pp. 2000-2012, May 2021. [arXiv, pdf, code] - M. K. Singh and V. Kekatos,
"On the Flow Problem in Water Distribution Networks: Uniqueness and Solvers,"
*IEEE Trans. on Control of Network Systems*, Vol. 8, No. 1, pp. 462-474, Mar 2021. [arXiv, pdf] - M. K. Singh and V. Kekatos,
"Natural Gas Flow Solvers using Convex Relaxation,"
*IEEE Trans. on Control of Network Systems*, Vol. 7, No. 3, pp. 1283-1295, Sep 2020. [arXiv, pdf] - M. Jalali, V. Kekatos, N. Gatsis, and D. Deka,
"Designing Reactive Power Control Rules for Smart Inverters using Support Vector Machines,"
*IEEE Trans. on Smart Grid*, Vol. 11, No. 2, pp. 1759-1770, Mar 2020. [arXiv, pdf, code] - M. K. Singh and V. Kekatos,
"Optimal Scheduling of Water Distribution Systems,"
*IEEE Trans. on Control of Network Systems*, Vol. 7, No. 2, pp. 711-723, June 2020. [arXiv, pdf] - S. Taheri and V. Kekatos,
"Power Flow Solvers for Direct Current Networks,"
*IEEE Trans. on Smart Grid*, Vol. 11, No. 1, pp. 634-643, Jan 2020. [arXiv, pdf] - G. Cavraro, A. Bernstein, V. Kekatos, and Y. Zhang,
"Real-Time Identifiability of Power Distribution Network Topologies with Limited Monitoring,"
*IEEE Control Systems Letters*, Vol. 4, No. 2, pp. 325-330, Apr 2020. [pdf] - S. Bhela, V. Kekatos, and S. Veeramachaneni,
"Smart Inverter Grid Probing for Learning Loads: Part I -- Identifiability Analysis,"
*IEEE Trans. on Power Systems*, Vol. 34, No. 5, pp. 3527-3536, Sep 2019. [arXiv, pdf] - S. Bhela, V. Kekatos, and S. Veeramachaneni,
"Smart Inverter Grid Probing for Learning Loads: Part II -- Probing Injection Design,"
*IEEE Trans. on Power Systems*, Vol. 34, No. 5, pp. 3537-3546, Sep 2019. [arXiv, pdf] - G. Cavraro and V. Kekatos,
"Inverter Probing for Power Distribution Network Topology Processing,"
*IEEE Trans. on Control of Network Systems*, Vol. 6, No. 3, pp. 980-992, Sep 2019. [arXiv, pdf] - 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] - 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*, Vol. 10, No. 4, pp. 3883-3894, July 2019. [arXiv, pdf] - G. Cavraro, V. Kekatos, and S. Veeramachaneni,
"Voltage Analytics for Power Distribution Network Topology Verification,"
*IEEE Trans. on Smart Grid*, Vol. 10, No. 1, pp. 1058-1067, Jan. 2019. [arXiv, pdf] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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

- M. Jalali, V. Kekatos, S. Bhela, and H. Zhu,
"Inferring Power System Frequency Oscillations using Gaussian Processes,"
*IEEE Conf. on Decision and Control (CDC)*, Austin, TX, Dec. 2021, (to appear). [pdf] - M. K. Singh, G. Cavraro, A. Bernstein, and V. Kekatos,
"Ripple-Type Control for Enhancing Resilience of Networked Physical Systems,"
*American Control Conference (ACC)*, New Orleans, LA, May 2021. [pdf] - M. K. Singh, S. Gupta, V. Kekatos, G. Cavraro, and A. Bernstein,
"Learning to Optimize Power Distribution Grids using Sensitivity-Informed Deep Neural Networks,"
*IEEE Smart Grid Communications*, Tempe, AZ, Nov. 2020. [arXiv, pdf] - S. Gupta, V. Kekatos, and M. Jin,
"Deep Learning for Reactive Power Control of Smart Inverters under Communication Constraints,"
*IEEE Smart Grid Communications*, Tempe, AZ, Nov. 2020. [arXiv, pdf] - M. K. Singh and V. Kekatos,
"Natural Gas Flow Equations: Uniqueness and an MI-SOCP Solver,"
*American Control Conference (ACC)*, Philadelphia, PA, July 2019. [arXiv] - 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. [pdf] - S. Taheri, V. Kekatos, and G. Cavraro,
"An MILP Approach for Distribution Grid Topology Identification using Inverter Probing,"
*IEEE PES PowerTech*, Milan, Italy, June 2019. [pdf, arXiv] - 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*, Atlanta, GA, Aug. 2019. [pdf, arXiv] - S. Taheri, V. Kekatos, and H. Veeramachaneni,
"Energy Storage Sizing in Presence of Uncertainty,"
*IEEE Power and Energy Society General Meeting*, Atlanta, GA, Aug. 2019. [pdf] - 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] - 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] - 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] - A. Ojha, V. Kekatos, and R. Baldick,
"Solving the Natural Gas Flow Problem using Semidefinite Program Relaxation,"
*IEEE Power and Energy Society General Meeting.*, Chicago, IL, July 2017. [pdf] - 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] - 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] - 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] - 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] - 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] - 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] - 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. - 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. - 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] - V. Kekatos, G. B. Giannakis, and R. Baldick,
"Grid Topology Identification using Electricity Prices,"
*IEEE Power and Energy Society General Meeting*, Washington, DC, July 2014;*(best papers session)*. [arXiv] - 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] - 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] - 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] - 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] - 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] - 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] - V. Kekatos and G. B. Giannakis, "Decentralized Power System State Estimation,"
*IEEE GLOBECOM*, Anaheim, CA, Dec. 2012. [pdf] - 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] - 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] - V. Kekatos and G. B. Giannakis,
"Compressed Sensing for Volterra and Polynomial Regression Models,"
*European Signal Proc. Conf. (EUSIPCO)*, Barcelona, Spain, Aug. 2011. [pdf] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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] - 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. - 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]