ZHAO Changhong

*SHB = Ho Sin Hang Engineering Building, The Chinese University of Hong Kong

Research Interest
  • Complex systems
  • Optimization
  • Control
Courses Taught

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

ZHAO Changhong 趙常宏教授

Associate Professor
SMIEEE
BEng (Tsinghua), MS, PhD (Caltech)
(852) 3943-5157
Room 806, SHB*
chzhao [at] ie.cuhk.edu.hk
Website

Changhong Zhao received PhD from Caltech in 2016, advised by Prof. Steven Low. Then he worked at NREL until 2019.

He explores math and theory behind complex systems, with current focus on power systems: optimal power flow, network topology optimization, and learning for control.

Recent / Selected Publications
  • Yujin Huang, Heng Liang, and Changhong Zhao. Reinforcement learning with primal-dual updates for safe optimal frequency control in power systems. CSEE Journal of Power and Energy Systems, accepted.
  • Bohang Fang, Yue Chen, and Changhong Zhao. Approximating dispatchable regions in three-phase radial networks with conditions for exact SDP relaxation. IEEE Transactions on Power Systems, accepted.
  • Runjie Zhang, Kaiping Qu, Changhong Zhao, and Wanjun Huang. Robust distribution network reconfiguration using mapping-based column-and-constraint generation. IEEE Transactions on Power Systems, 41(5):3636-3649, 2026.
  • Heng Liang, Yujin Huang, and Changhong Zhao. A data-driven real-time optimal power flow algorithm using local feedback in distribution networks. IEEE Transactions on Power Systems, 41(2):1535-1548, 2026.
  • Bohang Fang, Changhong Zhao, and Steven H. Low. Convergence of backward/forward sweep for power flow solution in radial networks. IEEE Transactions on Control of Network Systems, 12(2):1780-1792, 2025.
Research Interest

  • Complex systems
  • Optimization
  • Control
Courses Taught

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