Tim Hansen

Education

2011, B.S. Computer Engineering, Milwaukee School of Engineering, Milwaukee, WI
2015, Ph.D. Electrical Engineering, Colorado State University, Fort Collins, CO

Academic Interests

Electric Power Systems and Markets, Optimization, High-performance Computing, Edge Computing, Optimal Control, Machine Learning, Modeling and Simulation, Computer Engineering

Academic Responsibilities

EE245/L - Digital Systems
EE492/592 - Advanced Power Systems Analysis
CSC/EE469-569 - Fundamentals of High-Performance Computing
EE792 - Fundamentals of Power Systems Economics
EE792 - Computational Data Analysis of Power Systems

Committee Activities

IEEE Region 4 Siouxland Section Executive Committee, Chair (2019 - Present), Young Professionals Chair (2017-2019)
IEEE Power and Energy Society (PES) Power Engineering Education Committee (PEEC) Research Committee Co-chair (2024-present), Secretary (2022-2024); Awards Subcommittee, Chair (2019-2021), Co-chair (2017 - 2019), Secretary (2016 - 2017)
IEEE Eta Kappa Nu (HKN) Honor Society Faculty Advisor (2016 - Present)

Awards and Honors

2024 SDSU Jerome J. Lohr College of Engineering Outstanding Researcher Award 2024.

Invited Visiting Faculty, Multiscale modeling of Urban Systems (AVENUES) Laboratory, Universite de Technologie de Compiegne (UTC), France, Summer 2023.

2020 Graduate of the Last Decade, Milwaukee School of Engineering, Milwaukee, WI, received for accomplishments achieved of significant importance at an early stage of his career.

2019 IEEE-HKN C. Holmes MacDonald Outstanding Teaching Award, received “for exceptional engagement of undergraduate students in electrical and computer engineering through pedagogical innovations, classroom technologies and curriculum development.”

Best paper award: “Parallel Implementation of AC Optimal Power Flow and Time-Constrained Optimal Power Flow using High-Performance Computing,” in IEEE 9th Annual Computing and Communication Workshop and Conference (CCWC 2019), Jan. 2019

EPSCoR South Dakota Discovery Center Science Communication Fellow, Fall 2018

Best paper award: “Metrics-Based Assessment of Sustainability in Demand Response,” in 15th IEEE International Conference on Smart City, Dec. 2017

Invited Visiting Faculty, Franche-Comte Electronics, Mechanics, Thermal Science, and Optics (FEMTO-ST), Energy Department, Universite de Technologie de Belfort-Montbeliard (UTBM), part of Universite Bourgogne Franche-Comte (UBFC), 90010 Belfort cedex, France, Summer 2017

Best paper award: “Spatial-Temporal Stochasticity of Electric Vehicles in an Integrated Traffic and Power System,” in 2016 IEEE International Conference on Electro/Information Technology (EIT’16) (out of approx. 125 papers), May 2016

Grants

Co-PI: “TRANSFORMATIVE: Transmission and Distribution Systems with Flexible and Optimal Coordination: Resilience, Modeling, and Technologies for a VRE and DER-Integrated Adaptive Energy Grid,” from Department of Energy Solar Energy Technology Office (SETO), Grant No. OIA-2316400, Sep. 1, 2024 to Aug. 31, 2027, Award: $357,467, SDSU sub-award (including $105k cost share) from University of Connecticut as part of a $4.5MM collaboration. Hansen is the sole investigator from SDSU.

PI: “Collaborative Research: RII Track-2 FEC: STORM: Data-Driven Approaches for Secure Electric Grids in Communities Disproportionately Impacted by Climate Change,” from National Science Foundation, Grant No. OIA-2316400, Sep. 15, 2023 to Aug. 31, 2027, Award: $750,000, SDSU portion of a $6MM collaboration with University of Maine, University of Puerto Rico Mayaguez, and University of Alaska Fairbanks.

PI: “PHASE 3 RENEWAL: Development and Validation of Models to Assess Dynamic Response of Converter-Dominated Power Systems across Multiple Spatiotemporal Scales,” from United States Department of Energy Office of Science, Co-Principal Investigator(s) – Hossein Moradi, Grant No. DE-SC0020281, Aug. 15, 2023 to Aug. 14, 2025, Award: $291,211, SDSU sub-contract of a $1,000,000 award with University of Alaska Fairbanks (lead), University of Puerto Rico Mayaguez, University of Hawaii, and University of Maine.

Co-PI: “MRI: Acquisition of a Heterogeneous High-Performance Computing Cluster Driven by Computational and Data-Intensive Multidisciplinary Research,” from National Science Foundation, Principal Investigator – Kevin Brandt, Co-Principal Investigator(s) – Anne Fennell, Larry M. Leigh, and Joy Scaria, Grant No. OAC-2216311, Oct. 1, 2022 to Sep. 30, 2025, Award: $978,708.

PI: “Renewal: Development and Validation of Models to Assess Dynamic Response of Converter-Dominated Power Systems across Multiple Spatiotemporal Scales,”
from United States Department of Energy Office of Science, Co-Principal Investigator(s) – Hossein Moradi, Reinaldo Tonkoski, Grant No. DE-SC0020281, Aug. 15, 2021 to Aug. 14, 2023, Award: $331,413, SDSU sub-contract of a $2,000,000 award with University of Alaska Fairbanks (lead), University of Puerto Rico Mayaguez, University of Hawaii, and University of Maine. Hansen took over PI role starting Aug. 15, 2022.

Co-PI: “Development and Validation of Models to Assess Dynamic Response of Converter-Dominated Power Systems across Multiple Spatiotemporal Scales,” from United States Department of Energy Office of Science, Principal Investigator – Reinaldo Tonkoski, Grant No. DE-SC0020281, Sep. 15, 2019 to Sep. 14, 2021, Award: $630,897, SDSU sub-contract of a $3,000,000 award with University of Alaska Fairbanks (lead) and University of Puerto Rico Mayaguez.

PI: “Battery Energy Storage System-based Virtual Inertia for a Resilient Power Grid,” from SDSU Office of Academic Affairs and Office of Research and Economic Development: Research, Scholarship and Creative Activity (RSCA) Challenge Fund, Co-Principal Investigator – Reinaldo Tonkoski, Aug. 19, 2019 to Aug. 18, 2020, Award: $32,105.

Co-PI, “MRI: Acquisition of a Microgrid Cyber-Physical Testbed for Advanced Energy Management Systems,” from National Science Foundation, Grant No. ECCS-1726964, Sep. 15, 2017 to Aug. 31, 2020, Award: $252,362.

Co-PI, “Next Generation Energy Management System for Future Smart Homes,” South Dakota Board of Regents Competitive Research Grant Program, Aug. 21, 2017 to Aug. 20, 2018, Award: $80,000.

PI, "Collaborative Research: A Scalable Sustainability-Based Approach to a Novel Demand Response Paradigm in the Emerging Smart Grid," National Science Foundation, Grant No. ECCS-1608722, Aug. 15, 2016 to Aug. 14, 2019, Award: $153,689.

Professional Memberships

IEEE Senior Member:
IEEE Power and Energy Society;
IEEE Computer Society;
IEEE-HKN.

ACM Member:
ACM SIGHPC;
ACM SIGGAPP;
EIG on Energy.

Work Experience

Researcher, Distributed Energy Systems Integration, National Renewable Energy Laboratory, Golden, CO (2014-2015);
Embedded Systems Engineer, CCS, Inc., Waukesha, WI (2008-2011).

Creative Activities

JOURNAL PUBLICATIONS (selected)
[J5] Abodh Poudyal, Ujjwol Tamrakar, Rodrigo D. Trevizan, Robert Fourney, Reinaldo Tonkoski, and Timothy M. Hansen, “Multi-Area Inertia Estimation using Convolutional Neural Networks and Federated Learning,” IEEE Systems Journal, vol. 16, no. 4, pp. 6401–6412, Dec. 2022.

[J4] Ujjwol Tamrakar, David A. Copp, Tu Nguyen, Timothy M. Hansen, and Reinaldo Tonkoski, “Optimization-Based Fast-Frequency Estimation and Control of Low-Inertia Microgrids,” IEEE Transactions on Energy Conversion, special issue on Model Predictive Control in Energy Conversion Systems, vol. 36, no. 2, pp. 1459–1468, June 2021.

[J3] Priti Paudyal, Prateek Munankarmi, Zhen Ni, and Timothy M. Hansen, “A Hierarchical Control Framework with a Novel Bidding Scheme for Residential Community Energy Optimization,” IEEE Transactions on Smart Grid, vol. 11, no. 1, pp. 710–719, Jan. 2020.

[J2] Timothy M. Hansen, Edwin K. P. Chong, Siddharth Suryanarayanan, Anthony A. Maciejewski, and Howard Jay Siegel, “A Partially Observable Markov Decision Process Approach to Residential Home Energy Management,” IEEE Transactions on Smart Grid, vol. 9, no. 2, pp. 1271–1281, Mar. 2018.

[J1] Timothy M. Hansen, Robin Roche, Siddharth Suryanarayanan, Anthony A. Maciejewski, and Howard Jay Siegel, “Heuristic Optimization for an Aggregator-based Resource Allocation in the Smart Grid,” IEEE Transactions on Smart Grid, vol. 6, no. 4, pp. 1785–1794, July 2015.

CONFERENCE PUBLICATIONS (selected)
[C5] Bidur Poudel, Pooja Aslami, Tara Aryal, Niranjan Bhujel, Manisha Rauniyar, Hossein Moradi Rekabdarkolaee, Ujjwol Tamrakar, Timothy M. Hansen, and Reinaldo Tonkoski, “Comparative Analysis of State and Parameter Estimation Techniques for Power System Frequency Dynamics,” in IEEE Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) 2022, Sorrento, Italy, 8 pages, June 2022.

[C4] Sunil Subedi, Nischal Guruwacharya, Ujjwol Tamrakar, Phylicia Cicilio, Hossein Moradi Rekabdarkolaee, Robert Fourney, Reinaldo Tonkoski, and Timothy M. Hansen,
“Computationally Efficient Partitioned Modeling of Inverter Dynamics with Grid Support Functions,” in 47th Annual Conference of the IEEE Industrial Electronics Society (IECON’21), special session on Advances in Component and System Modeling and Simulation of Power Systems in Transition to Converter-Dominated Systems, Toronto, Ontario, Canada, Oct. 2021, 6 pages.

[C3] Niranjan Bhujel, Astha Rai, Ujjwol Tamrakar, Timothy M. Hansen, and Reinaldo Tonkoski, “A Model Predictive Approach for Voltage Support in Microgrids using Energy Storage Systems,” in IEEE Power and Energy Society General Meeting 2021 (PESGM21), Washington, D.C., 5 pages, Aug. 2021. Presented at the Best Papers Session on Distribution, Microgrids, and Energy Hubs.

[C2] Ujjwol Tamrakar, Nischal Guruwacharya, Niranjan Bhujel, Felipe Wilches-Bernal, Timothy M. Hansen, and Reinaldo Tonkoski, “Inertia Estimation in Power Systems using Energy Storage and System Identification Techniques,” in IEEE Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) 2020, Sorrento, Italy, 6 pages, June 2020.

[C1] Aravind Ingallali, Andre Luna, Venkat Durvasulu, David A. Copp, Tu A. Nguyen, Timothy M. Hansen, and Reinaldo Tonkoski, “Energy Storage Systems in Emerging Electricity Markets: Frequency Regulation and Resiliency,” in IEEE Power and Energy Society General Meeting 2019, Atlanta, GA, 5 pages, August 2019.

Area(s) of Research

robust resource allocation and optimization applied to cyber-physical-social systems, electric power engineering and markets, high-performance computing, simulation and modeling, and design of energy management systems