Research

Area 1

Dynamic System Modeling & Control of Power Systems and Power Electronic Systems

In this area, differential algebraic equations based dynamic system modeling, analysis and control synthesis are investigated for system dynamics and operation. Our group has made significant achievements in developing analytical dynamic models for wind energy systems, power electronics devices, and etc using rotating reference frame methods, space vector concept and dynamic phasor concepts. We also conducted theoretic exploration in applying frequency domain impedance modeling and analysis in wind energy systems, voltage-source converter HVDC systems and microgrids to identify resonances and limiting power delivery factors. Our research in Type 3 wind generator SSR phenomena analysis and mitigation provides reference work for the industry and the research community.
Application areas:

  • Wind generation grid integration
  • Modular multi-level HVDC systems
  • Microgrids
  • Energy storage systems

Area 2


Power Market

An advanced graduate-level course has been put into the curriculum since Spring 2013 on power market. Our research in this area includes investigation of energy storage systems' role in demand response programs, investigation of mixed integer programming problem formulation in determining optimal bidding strategy and prices while considering uncertainty due to load forecase and renewable energy stochastics.


Area 3


SCADA and Energy Management Systems

Our focus in this area includes integrated computing, control and communication systems to build information layers for smart grids to achieve smart grid funtionalities including demand response program.


Area 4

Real-Time Digital Simulation-based
Hardware-in-the-Loop Research

Our focus in this area provides TRL-6 prototype systems to validate our solutions to the real-world. Our lab is equipped with two racks of OPAL-RT high performance computers, National Instrument CompactRio control systems, dSpace controller prototype systems and etc.


Area 5

Programming/Computing in Smart Grids

Our focus in this area includes operation research and distributed computing in smart grid operation and planning. Currently, we are investigating generator parameter identification using phasor measurement unit (PMU) data, battery parameter identification, and large-scale optimal power flow, state estimation solving using convex optimization and cutting plane techniques. We are also investigating distributed computing and applied such technqiues in power electronics and power systems.


Area 6

Cyber Security in Smart Grids

Our focus in this area provides a prototype testbed with the capability of modeling both power grids and communication networks as well as communication protocols. We have also developed algorithms that are robust against data attacks in power grid SCADA systems and robust control strategies that are robust against control device intrusion.

 

Ph.D. Student Opportunity

Please contact Dr. Zhixin Miao [ zmiao@usf(dot)edu ] for any opportunities.



IEEE Xplore Top Accessed Articles

  • L. Fan, S. Yuvarajan, R. Kavasseri, "Harmonic Analysis of a DFIG for a Wind Energy Conversion System", IEEE transactions on Energy Conversion, vol. 25, no. 1, pp. 181-190, March 2010. Top 10 accessed articles Feb. 2010. Feb. 2010 IEEE Trans. Energy Conversion
  • L. Fan, R. Kavasseri, Z. Miao, C. Zhu, "Modeling of DFIG-based Wind Farms for SSR Analysis," IEEE Trans. Power Delivery, vol. 25, no. 4, pp. 2073-2082, Oct. 2010. Top 10 accessed articles Dec. 2010. Dec. 2010 IEEE Trans. Power Delivery
  • L. Fan and Z. Miao, "Mitigating SSR using DFIG-based Wind Generation," IEEE Trans. Sustainable Energy, vol. 3, no. 3, July 2012, pp. 349-358. Top 25 accessed articles June, Dec 2012. Jun. 2012 IEEE Trans. Sustainable Energy Dec. 2012 IEEE Trans. Sustainable Energy
  • H. Yin, L. Fan, and Z. Miao, "Fast Power Routing through HVDC," IEEE Trans. Power Delivery, vol. 27, no. 3, July 2012, pp 1432-1441. Top 25 accessed articles July 2012. July 2012 IEEE Trans. Power Delivery
  • Nehrir, M.H.; Wang, C.; Strunz, K.; Aki, H.; Ramakumar, R.; Bing, J.; Miao, Z.; Salameh, Z., "A Review of Hybrid Renewable/Alternative Energy Systems for Electric Power Generation: Configurations, Control, and Applications," IEEE Trnas. Sustainable Energy, vol. 2, no. 4, 2011, pp. 392-403. Top 25 accessed articles in Dec. 2012. Dec. 2012 IEEE Trans. Sustainable Energy

Journal Articles

  • Z. Miao, "Impact of Unbalance on Electrical and Torsional Resonances in Power Electronic Interfaced Wind Energy Systems", to appear, IEEE Trans. Power Systems.
  • L. Fan, Z. Miao and Y. Wehbe, "Application of Dynamic State and Parameter Estimation Techniques on Real-World Data ," to appear, IEEE Trans. Smart Grid.
  • Z. Miao, "Impedance-Model-Based SSR Analysis for Type 3 Wind Generator and Series-Compensated Network," IEEE Trans. Energy Conv., vol. 27, no. 4, Dec. 2012, pp. 984 - 991
  • H. Yin, L. Fan, and Z. Miao, "Fast Power Routing through HVDC," IEEE Trans. Power Delivery, vol. 27, no. 3, July 2012, pp 1432-1441. Top 25 accessed articles July 2012
  • L. Fan and Z. Miao, "Nyquist-Stability-Criterion-based Explanation for Type 3 Wind Generator SSR Problem," IEEE Tran. Energy Conversion., vol. 27, no. 3, Sept 2012, pp 807 - 809.
  • L. Fan and Z. Miao, "Mitigating SSR using DFIG-based Wind Generation," IEEE Trans. Sustainable Energy, vol. 3, no. 3, July 2012, pp. 349-358. Top 25 accessed articles June 2012.
  • L.P. Piyasinghe and Z. Miao, "DROOP CONTROL IN VOLTAGE SOURCE CONVERTERS FOR MICROGRID OPERATION WITH PULSED POWER LOADS," Technology & Innovation 14 (2), 167-178, 2012
  • Z Miao, A Domijan, L Fan, "On Integration of Distributed Energy Resources to Microgrids—An Overview," International Journal of Power and Energy Systems 32 (4), 149, 2012
  • Z. Miao, "LOW-FREQUENCY RIPPLES AND RESONANCES IN WIND AND SOLAR GRID INTEGRATION SYSTEMS: AN OVERVIEW,"
  • Technology & Innovation 14 (2), 153-165, 2012
  • Z Miao, A Domijan, L Fan, "ANALYSIS OF NEGATIVE SEQUENCE COMPENSATION-BASED UNBALANCE CONTROL IN DISTRIBUTED ENERGY RESOURCES INTERFACING INVERTERS," International Journal of Power and Energy Systems 2012 32 (3)
  • L. Fan, C. Zhu, Z. Miao and M. Hu, "Modal Analysis of Series Compensated DFIG-based Wind Farms," IEEE Trans. on Energy Conversion, vol. 26, no. 4, pp.1010-1020, Dec. 2011.
  • Z. Miao, A. Domijan, and L. Fan, "Investigation of Microgrids with Both Inverter Interfaced and Direct AC Connected Distributed Energy Resources," IEEE Trans. on Power Delivery, vol. 26, no. 3, pp. 1634-1642, July 2011.
  • L. Fan, H. Yin, and Z. Miao, "On Active/Reactive Power Modulation in DFIG-based Wind Generation for Inter-Area Oscillation Damping," IEEE Trans. on Energy Conversion, vol. 26, no. 2, pp. 513-521, June 2011.
  • L. Fan, H. Yin, and Z. Miao, "A Novel Control Scheme for DFIG-based Wind Energy Systems under Unbalanced Grid Condition," Electric Power Systems Research, vol. 81, no. 2, pp. 254-262, Feb. 2011.
  • Nehrir, M.H.; Wang, C.; Strunz, K.; Aki, H.; Ramakumar, R.; Bing, J.; Miao, Z.; Salameh, Z., "A Review of Hybrid Renewable/Alternative Energy Systems for Electric Power Generation: Configurations, Control, and Applications," IEEE Trnas. Sustainable Energy, vol. 2, no. 4, 2011, pp. 392-403.
  • Z. Miao, L. Fan, D. Osborn, S. Yuvarajan, "Wind Farms with HVDC Delivery in Inertial Response and Load Frequency Control," IEEE Trans. on Energy Conversion, vol. 25, no. 4, pp. 1171-1178, Dec. 2010.
  • L. Fan, R. Kavasseri, Z. Miao, C. Zhu, "Modeling of DFIG-based Wind Farms for SSR Analysis," IEEE Trans. Power Delivery, vol. 25, no. 4, pp. 2073-2082, Oct. 2010. Top 10 accessed articles Dec. 2010.
  • P. Du, Z. Ye, E. Aponte, J. Nelson, and L. Fan, "Positive-feedback-based Active Anti-islanding Schemes for Inverter-Based Distributed Generators: Basic Principle, Design Guideline and Performance Analysis," IEEE Trans. Power Electronics, vol. 25, no. 12, pp. 2941-2948, Dec. 2010.
  • L. Fan, Z. Miao, S. Yuvarajan, R. Kavasseri, "Hybrid modeling of DFIGs for wind energy conversion systems," Simulation Modelling Practice and Theory, vol. 18, pp. 1032-1045, 2010.
  • L. Fan, Z. Miao, D. Osborn, "Wind Farms with HVDC Delivery in Load Frequency Control", IEEE transactions on Power Systems, vol. 24, no. 4, pp. 1894-1895, Nov. 2009.
  • L. Fan, S. Yuvarajan, R. Kavasseri, "Harmonic Analysis of a DFIG for a Wind Energy Conversion System", IEEE transactions on Energy Conversion, vol. 25, no. 1, pp. 181-190, March 2010. Top 10 accessed articles Feb. 2010.
  • Z. Miao, L. Fan, D. Osborn, and S. Yuvarajan, "Control of DFIG based Wind Generation to Improve Inter-Area Oscillation Damping," IEEE Transactions on Energy Conversion, vol. 24, no. 2 , pp. 415-422, June 2009.
  • Z. Miao, L. Fan, "The Art of Modeling High-Order Induction Generator in Wind Generation Applications," Simulation Modelling Practice and Theory, vol. 16, no. 9, Oct. 2008, pp. 1239-1253.
  • S. Yuvarajan, L. Fan, "A DFIG-Based Wind Generation System with Quasi-Sine Rotor Injection," Journal of Power Sources, Vol. 184, Issue 1, Sept. 15, 2008.
  • L. Fan, A. Feliachi, K. Schoder, "Selection and Design of a TCSC Control Signal in Damping Power System Inter-Area Oscillations for Multiple Operating Conditions," Electric Power Systems Research Journal, Vol. 62, pp. 127-137, August 2002.

Talks/Presentations

  • L. Fan, Dynamic Estimation using PMU Data, NASPI RITT workshop, Orlando, Feb 29, 2012.
  • L. Fan, Application of PMU Data in Dynamic System Estimation and Fault Location, NASPI RITT Conference Call, Oct. 2011
  • L. Fan, Smart Grid Curriculum Development at USF, DOE Undergraduate Energy Curriculum workshop, University of Minnesota, Aug. 8, 2011.
  • L. Fan, Application of PMU Data in Dynamic System Estimation and Fault Location, Midwest ISO PMU Project Stakeholder meeting, June 2011.
  • L. Fan, Wind Energy Grid Integration Panel Session, IEEE PESGM 2011, Detroit, July 2011
  • L. Fan, Dynamics in Wind Energy Integration Systems, Washington State University, April 2011.
  • L. Fan, Dynamics in Wind Energy Integration Systems, University of Wyoming, March 2011.
  • L. Fan, Impact of Unbalanced Grid Conditions on PV Systems, Solar Energy Grid Integration Session, IEEE PESGM 2010, Minneapolis, July 2010
  • L. Fan, SSR in Wind Energy Systems, NAPS, Mississippi State University, Sep. 2009
  • L. Fan, Control of Wind Energy Systems for Inter-Area Oscillation Damping, Michigan Tech, Feb. 2009.
  • L. Fan, Control of Wind Energy Systems, Iowa State University, Jan. 2009.

Conference Publications

  • Y. Wehbe and L. Fan, "Least Squares Based Estimation of Synchronous Generator States and Parameters with Phasor Measurement Units", accepted, North American Power Symposium 2012, to be held in Urbana-Champaign from Sept 9-11, 2012.
  • Y. Wehbe and L. Fan, "UKF-Based Estimation of Synchronous Generator Electromechanical Parameters from Phasor Measurements", accepted, North American Power Symposium 2012, to be held in Urbana-Champaign from Sept 9-11, 2012.
  • L. Xu and L. Fan, "System Identification Based VSC-HVDC DC Voltage Controller Design," accepted, NAPS 2012.
  • Z-D. Yin, R-Z. San, L. Fan and S. Cao, " Multi-Objective Operation of Cascade Inverter-Based Voltage Quality Disturbance Generator," accepted, ECCE 2012
  • L. Xu and L. Fan, "Modeling and Simulation of Multi-terminal HVDC for Wind Power Delivery," accepted, PEMWA 2012
  • L. Xu, Z. Miao and L. Fan, "Control of a Battery System to Improve Operation of a Microgrid," IEEE PESGM 2012.
  • Z. Miao and L. Fan, "Stability Analysis for PMSG wind generator," IEEE PESGM 2012.
  • L. Xu, Z. Miao, and L. Fan, "Microgrid Operation of PV and battery," IEEE PES T&D 2012.
  • Lakshan Piyasinghe and L. Fan, "An optimal power flow algorithm considering wind power penetration", NAPS 2011.
  • Y. Wehbe and L. Fan,"Estimation of a Shunted Radial Transfer Path Dynamics Using PMUs," Proceedings of IEEE PESGM 2011.
  • L. Fan, Z. Miao and D. Osborn, "AC or DC Power Modulation for DFIG Wind Generation with HVDC Delivery to Improve Interarea Oscillation Damping," IEEE PESGM 2011.
  • L. Xu, Z. Miao, and L. Fan, " Control of a Back-to-Back VSC System from Grid-Connection to Islanded Mode in Microgrids," IEEE EnergyTech 2011, Case Western University, May 2011.
  • H. Yin, L. Fan, and Z. Miao, "Coordination between DFIG-based Wind Farm and LCC-HVDC Transmission Considering Limiting Factors," IEEE EnergyTech 2011, Case Western University, May 2011.
  • L. Fan, Z. Miao and A. Domijan, "Impact of Unbalanced Grid Conditions on PV Systems," Proceedings of IEEE PESGM 2010.
  • H. Yin, L. Fan, and Z. Miao, "Reactive Power Modulation for Inter-area Oscillation Damping of DFIG-based Wind Generation," Proceedings of IEEE PESGM 2010.
  • C. Zhu, L. Fan, and M. Hu, "Control and Analysis of a DFIG-Based Wind Turbine in a Series Compensated Network for SSR Damping," Proceedings of IEEE PESGM 2010.
  • H. Yin and L. Fan, "Modeling and Control of DFIG-based Large offshore Wind Farm with HVDC-link Integration," NAPS 2009, Mississippi State University, Starkville, MS, Oct. 2009.
  • C. Zhu, L. Fan and H. Hu, "Modeling and Simulation of a DFIG-Based Wind Turbine for SSR," NAPS 2009, Mississippi State University, Starkville, MS, Oct. 2009.
  • L. Fan, Z. Miao and X. Wang, "Sensorless Maximum Power Point Tracking in Multi-Type Wind Energy Conversion Systems," IEEE CDC 2009.
  • L. Fan, C. Zhu, and M. Hu, "Fault Ride Through Techniques of DFIG-based Wind Energy Systems," IEEE CDC 2009.
  • L. Fan, H. Yin, and R. Kavasseri, "Negative Sequence Compensation Techniques of DFIG-based Wind Energy Systems under Unbalanced Grid Conditions" (accepted, Proc. IEEE Symposium on Power Electronics and Machines in Wind Applications (PEMWA), 2009.
  • L. Fan, Z. Miao and S. Yuvarajan, "A Unified Model of Doubly Fed Induction Generator for Simulating Acceleration with Rotor Injection and Harmonics," Proceedings of IEEE Power & Energy Society General Meeting 2009.
  • L. Fan, R. Kavasseri, H. Yin, C. Zhu, and Q. Hu, "Control of Doubly Fed Induction Generator for Rotor Current Harmonics Elimination," Proceedings of IEEE Power & Energy Society General Meeting 2009.
  • R. Aghatehrani, L. Fan, R. Kavasseri, "Coordinated Reactive Power Control of DFIG Rotor and Grid Sides Converters," Proceedings of IEEE Power & Energy Society General Meeting 2009.
  • L. Fan, Jarred Miland, Dale Osborn, Zhixin Miao, "Regional Transmission Planning with Large-Scale Wind Power," Proceedings of IEEE Power & Energy Society General Meeting 2009.
  • L. Fan, "Review of Robust Control in Power Systems," Proceedings of IEEE Power Systems Conference & Exposition 2009.
  • L. Fan, Zhixin Miao, S. Yuvarajan, J. Glower, "A Comparison of Slip Control, FMAC and Vector Control in DFIG Wind Generators," Proceedings of IEEE Industrial Electronics Conference 2008.
  • F. Li, Z. Chen, L. Fan, Pei Zhang, "Toward a Self-Healing Protection and Control System," Proceedings of North America Power Symposium, Calgary, Canada, Sept. 2008.
  • L. Fan, Zhixin Miao, "A Contingency Database for Transmission Reliability Analysis," Proceedings of North America Power Symposium, Calgary, Canada, Sept. 2008.
  • Z. Miao, L. Fan, "Investigation of the Capability of a Solid Oxide Fuel Cell Power Plant Supplying a Motor Load," Proceedings of North America Power Symposium, Calgary Canada, Sep. 2008.
  • L. Fan, S. Yuvarajan, "Modeling and Slip Control of A Doubly Fed Induction Wind Turbine Generator," Proceedings of North America Power Symposium, Calgary Canada, Sep. 2008.
  • L. Fan, R. Kavasseri, Z. Miao, D. Osborn, T. Bilke, "Identification of System Wide Disturbances Using Synchronized Phasor Data and Ellipsoid Method," IEEE Power & Energy Society General Meeting, Pittsburgh PA, July 2008.
  • L. Fan, "Synchronized Global Phasor Measurement Based Inter-Area Oscillation Control Considering Communication Delay," IEEE Power & Energy Society General Meeting, Pittsburgh PA, July 2008.
  • Z. Miao, L. Fan, D. Osborn, Subbaraya Yuvarajan, "Control of DFIG based Wind Generation to Improve Inter-Area Oscillation Damping," IEEE Power & Energy Society General Meeting, Pittsburgh PA, July 2008.
  • L. Fan, Z. Miao, D. Osborn, "Impact of Doubly Fed Wind Turbine Generation on Inter-Area Oscillation Damping," IEEE Power & Energy Society General Meeting, Pittsburgh PA, July 2008.
  • Miao, Z.; Choudhry, M.A.; Klein, R.L.; Fan, L., "Study of a fuel cell power plant in power distribution system - part I: dynamic model," IEEE Power Engineering Society General Meeting, June 6-10 2004, pp. 2221-2226.
  • Miao, Z.; Choudhry, M.A.; Klein, R.L.; Fan, L, "Study of a fuel cell power plant in power distribution system - part II: stability control," IEEE Power Engineering Society General Meeting, June 6-10 2004, pp. 2227-2232.
  • S. Lockwood, R. Navarro, E. Bajrektarevic, P. Burke, S. Kang, P. Ferron, V. Kotecha, S. Kolluri, M. Nagle, S. Lee, P. Zhang, S.K. Agarwal, M. Papic, J. Useldinger, P.C. Patro, L. Arnold, D. Osborn,
  • L. Fan, L. Hopkins, M. Y. Vaiman, and M. M. Vaiman, "Utility Experience Computing Physical and Operational Margins," IEEE Power System Conference & Exhibition, April 2004.
  • L. Fan, Ali Feliachi, "Damping Enhancement of WSCC system via TCSC," IEEE Winter Power Engineering Society Meeting, New York City, Jan. 2002.
  • Zhixin Miao, L. Fan, Ali Feliachi, "Decentralized Load Frequency Control with Wedge-shaped Area Control Error," North American Power Symposium, Texas A&M University, Oct. 2001.
  • L. Fan, Ali Feliachi, Asad Davari, Karl Schoder, "Linear Adaptive Control Application in Power Systems," North American Power Symposium, Texas A&M University, Oct. 2001.
  • L. Fan, Ali Feliachi, "Effective Signal Selection in Decentralized Control Design of Nonlinear Inter-connected Systems," IEEE Conference of Decision and Control, Dec. 2001.
  • L. Fan, Ali Feliachi, Asad Davari, "Decentralized Control of Power Systems Using Disturbance Accommodation Techniques," American Control Conference, 2001.
  • L. Fan, Ali Feliachi, "Robust TCSC Control Design for Inter-Area Oscillations," IEEE Power Engineering Society Summer Power Meeting, Vancouver, Canada, July 2001.
  • L. Fan, Ali Feliachi, "Decentralized Stabilization of Nonlinear Electric Power Systems Using Local Measurements and Feedback Linearization," The 43rd Midwest Symposium of System and Circuits, Lansing MI, Aug. 2000.
  • L. Fan, Ali Feliachi, Heng Chen, "Improving Power System Damping Characteristics by Thyristor Controller Series Compensation," North American Power Symposium, Waterloo Canada, Oct. 2000.