Chinese Journal of Electrical Engineering ›› 2021, Vol. 7 ›› Issue (4): 49-59.doi: 10.23919/CJEE.2021.000037

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Distributed Control Framework and Scalable Small-signal Stability Analysis for Dynamic Microgrids

Yuxi Men, Yuhua Du, Xiaonan Lu*   

  1. College of Engineering, Temple University, Philadelphia 19122, USA
  • Received:2021-09-20 Revised:2021-11-25 Accepted:2021-12-05 Online:2021-12-25 Published:2022-01-07
  • Contact: *E-mail: xiaonan.lu@temple.edu
  • About author:Yuxi Men (S'19) received the B.S. degree in Faculty of Water Resources and Hydroelectric Engineering from Xi'an University of Technology, Xi'an, China in 2017 and the M.E. degree in Energy System Engineering Institute from Lehigh University, Bethlehem, USA in 2018. He is currently pursuing Ph.D. degree in Electrical and Computer Engineering from Temple University, Philadelphia, PA, USA. His research interest includes modeling and control of inverter-dominated hybrid and networked AC and DC microgrids.
    Yuhua Du (S'17-M'21) received the B.S degree in Electrical Engineering from Xi'an Jiaotong University, China in 2013 and Ph.D. degree in Electrical and Computer Engineering from North Carolina State University, USA in 2019. He was a Research Aide with Argonne National Laboratory in 2018. He is currently a Postdoctoral Fellow in Temple University. His research interests include voltage source converter modeling and control, microgrid distributed secondary control and development of microgrid hardware-in-the-loop testbed.
    Xiaonan Lu (S'12-M'13) received his B.E. and Ph.D. degrees in Electrical Engineering from Tsinghua University, Beijing, China, in 2008 and 2013, respectively. From September 2010 to August 2011, he was a guest Ph.D. student at the Department of Energy Technology, Aalborg University, Denmark. From October 2013 to December 2014, he was a Postdoc Research Associate at the Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville. From January 2015 to July 2018, he was with Argonne National Laboratory, first as a Postdoc Appointee and then as an Energy Systems Scientist. In July 2018, he joined the College of Engineering at Temple University as an Assistant Professor. His research interests include modeling and control of power electronic inverters, hybrid AC and DC microgrids, and real-time hardware-in-the-loop simulation. Dr. Lu is the Associate Editor of IEEE Transactions on Industrial Electronics, the Associate Editor of IEEE Transactions on Industry Applications, and the Editor of IEEE Transactions on Smart Grid. He serves as the Vice Chair of the Industrial Power Converters Committee (IPCC) in the IEEE Industry Applications Society (IAS). He is also the recipient of the 2020 Young Engineer of the Year Award in the IEEE Philadelphia Section.

Abstract: As a growing number of microgrids (MGs) has been integrated into the modern power grids, the interconnection and applicable cooperation among multiple MGs motivate the development of networked MGs. Dynamic MGs, as an advanced networked MGs structure, can not only integrate multiple MGs into the distribution system but also fulfill the requested system network reconfiguration with improved flexibility. A general distributed control approach for networked MGs is reviewed. A distributed control framework for dynamic MGs operation is developed, along with an extensible architecture with considerations of large-scale distributed energy resources (DERs) integration. A scalable small-signal stability analysis is conducted per the proposed distributed control strategies and the conditions under which the system is exponentially stable are derived. At last, the effectiveness of the proposed control framework and stability analysis are verified using a 6-bus test feeder.

Key words: Dynamic microgrids, distributed control, networked microgrids, small-signal stability analysis