Prof. ZHAO Changhong 趙常宏教授

Assistant Professor (SMIEEE)
Education: BE (Tsinghua), MS, PhD (Caltech)
Research Area: Internet Engineering and Networked Applications
Tel: (852) 3943-5157
Fax: (852) 2603-5032
Address: Rm 806, Ho Sin Hang Engineering Building, CUHK
Email: chzhao [@] ie.cuhk.edu.hk

Prof. Zhao's website

Research Interests

  • Optimization and control
  • Networked systems
  • Cyber-physical systems

Courses Taught

  • Signals and Systems
  • Networks: Technology, Economics, and Social Interactions


Changhong Zhao received BE in automation from Tsinghua University in 2010, and PhD in EE from Caltech in 2016. He joined CUHK in 2019 after spending years on R&D at the US National Renewable Energy Laboratory.

His research aims to make networked systems (e.g., power grid) more reliable, economical, and sustainable, by discovering and applying cutting-edge theory and algorithms in optimization and control. He was a recipient of the Demetriades Prize for best thesis in renewable energy, the Charles Wilts Prize for outstanding research in EE at Caltech, the Hong Kong RGC Early Career Award, and the IEEE PES Prize Paper Award.

Recent Selected Publications

  • H. Liang, X. Zhou, and C. Zhao. Hierarchical optimal power flow with improved gradient evaluation. American Control Conference, 2022.
  • Y. Chen, C. Zhao, S. H. Low, and A. Wierman. An energy sharing mechanism considering network constraints and market power limitation. IEEE Transactions on Smart Grid, early access, DOI: 10.1109/TSG.2022.3198721.
  • T. Wu, C. Zhao, and Y. J. A. Zhang. Privacy-preserving distributed optimal power flow with partially homomorphic encryption. IEEE Transactions on Smart Grid, 12(5):4506-4521, 2021.
  • X. Chen, C. Zhao, and N. Li. Distributed automatic load frequency control with optimality in power systems. IEEE Transactions on Control of Network Systems, 8(1):307-318, 2021. Conference version was a Best Student Paper Finalist of 2018 IEEE CCTA.
  • S. S. Guggilam, C. Zhao, E. Dall’Anese, Y. C. Chen, and S. V. Dhople. Optimizing DER participation in inertial and primary-frequency response. IEEE Transactions on Power Systems, 33(5):5194-5205, 2018. IEEE PES Prize Paper Award; IEEE Transactions on Power Systems Best Paper.
  • C. Zhao, U. Topcu, N. Li, and S. H. Low. Design and stability of load-side primary frequency control in power systems. IEEE Transactions on Automatic Control, 59(5):1177-1189, 2014.