488 citations · 685 across the 43 of their papers we have counts for
45 papers
Robust Distribution Network Reconfiguration Using Mapping-based Column-and-Constraint Generation
Runjie Zhang, Kaiping Qu, Changhong Zhao +1
The integration of intermittent renewable energy sources into distribution networks introduces significant uncertainties and fluctuations, challenging their operational security, s…
Achieving Social Optimum and Budget Balance via a Joint Electricity-Carbon Pricing Mechanism
Yue Chen, Changhong Zhao
Decarbonizing electric grids is a crucial global endeavor in the pursuit of carbon neutrality. Taking carbon emissions from generation into account when pricing electricity usage i…
A Hierarchical OPF Algorithm with Improved Gradient Evaluation in Three-Phase Networks
Heng Liang, Xinyang Zhou, Changhong Zhao
Linear approximation commonly used in solving alternating-current optimal power flow (AC-OPF) simplifies the system models but incurs accumulated voltage errors in large power netw…
Hierarchical Game for Coupled Power System with Energy Sharing and Transportation System
Dongxiang Yan, Tongxin Li, Changhong Zhao +2
The wide deployment of distributed renewable energy sources and electric vehicles can help mitigate climate crisis. This necessitates new business models in the power sector to hed…
Differentially Private Stochastic Convex Optimization in (Non)-Euclidean Space Revisited
Jinyan Su, Changhong Zhao, Di Wang
In this paper, we revisit the problem of Differentially Private Stochastic Convex Optimization (DP-SCO) in Euclidean and general spaces. Specifically, we focus on three…
Deep-Learning-Aided Voltage-Stability-Enhancing Stochastic Distribution Network Reconfiguration
Wanjun Huang, Changhong Zhao
Power distribution networks are approaching their voltage stability boundaries due to the severe voltage violations and the inadequate reactive power reserves caused by the increas…
Reinforcement Learning for Distributed Transient Frequency Control with Stability and Safety Guarantees
Zhenyi Yuan, Changhong Zhao, Jorge Cortes
This paper proposes a reinforcement learning-based approach for optimal transient frequency control in power systems with stability and safety guarantees. Building on Lyapunov stab…
Improved Successive Branch Reduction for Stochastic Distribution Network Reconfiguration
Wanjun Huang, Changhong Zhao
We propose an improved successive branch reduction (SBR) method to solve stochastic distribution network reconfiguration (SDNR), a mixed-integer program that is known to be computa…
Hierarchical Optimal Power Flow with Improved Gradient Evaluation
Heng Liang, Xinyang Zhou, Changhong Zhao
Existing algorithms to solve alternating-current optimal power flow (AC-OPF) often exploit linear approximations to simplify system models and accelerate computations. In this pape…
An Online Joint Optimization-Estimation Architecture for Distribution Networks
Yi Guo, Xinyang Zhou, Changhong Zhao +3
In this paper, we propose an optimal control-estimation architecture for distribution networks, which jointly solves the optimal power flow (OPF) problem and static state estimatio…
An Energy Sharing Mechanism Considering Network Constraints and Market Power Limitation
Yue Chen, Changhong Zhao, Steven H. Low +1
As the number of prosumers with distributed energy resources (DERs) grows, the conventional centralized operation scheme may suffer from conflicting interests, privacy concerns, an…
AC-Feasible Power Transfer Regions of Virtual Power Plants: Characterization and Application
Wei Lin, Changhong Zhao
Distributed energy resources (DERs) in distribution networks can be aggregated as a virtual power plant (VPP) for transmission-level operations. A critical challenge for such coord…
Cost Functions over Feasible Power Transfer Regions of Virtual Power Plants
Wei Lin, Changhong Zhao
A virtual power plant (VPP) facilitates the integration of distributed energy resources (DERs) for the transmission-level operation. A challenge in operating a VPP is to characteri…
Improved Approximation of Dispatchable Region in Radial Distribution Networks via Dual SOCP
Yue Chen, Changhong Zhao
The concept of dispatchable region is useful in quantifying how much renewable generation power the system can handle. In this paper, we aim to provide an improved dispatchable reg…
Peer-to-Peer Energy Sharing: A New Business Model Towards a Low-Carbon Future
Yue Chen, Changhong Zhao
The development of distributed generation technology is endowing consumers the ability to produce energy and transforming them into "prosumers". This transformation shall improve e…
Optimal Energy Scheduling and Sensitivity Analysis for Integrated Power-Water-Heat Systems
Sidun Fang, Chenxu Wang, Yashen Lin +1
The conventionally independent power, water, and heating networks are becoming more tightly connected, which motivates their joint optimal energy scheduling to improve the overall…
Privacy-Preserving Distributed Optimal Power Flow with Partially Homomorphic Encryption
Tong Wu, Changhong Zhao, Ying-Jun Angela Zhang
Distribution grid agents are obliged to exchange and disclose their states explicitly to neighboring regions to enable distributed optimal power flow dispatch. However, the states…
Economic Dispatch With Distributed Energy Resources: Co-Optimization of Transmission and Distribution Systems
Xinyang Zhou, Chin-Yao Chang, Andrey Bernstein +2
The increasing penetration of distributed energy resources (DERs) in the distribution networks has turned the conventionally passive load buses into active buses that can provide g…
Optimizing Information Freshness via Multiuser Scheduling with Adaptive NOMA/OMA
Qian Wang, He Chen, Changhong Zhao +3
This paper considers a wireless network with a base station (BS) conducting timely status updates to multiple clients via adaptive non-orthogonal multiple access (NOMA)/orthogonal…
Approaching Prosumer Social Optimum via Energy Sharing with Proof of Convergence
Yue Chen, Changhong Zhao, Steven H. Low +1
With the advent of prosumers, the traditional centralized operation may become impracticable due to computational burden, privacy concerns, and conflicting interests. In this paper…
Decentralized Provision of Renewable Predictions within a Virtual Power Plant
Yue Chen, Tongxin Li, Changhong Zhao +1
The mushrooming of distributed energy resources turns end-users from passive price-takers to active market participants. To manage those massive proactive end-users efficiently, vi…
Optimal Power Flow with State Estimation In the Loop for Distribution Networks
Yi Guo, Xinyang Zhou, Changhong Zhao +2
We propose a framework for integrating optimal power flow (OPF) with state estimation (SE) in the loop for distribution networks. Our approach combines a primal-dual gradient-based…
Exponential Stability of Partial Primal-Dual Gradient Dynamics with Nonsmooth Objective Functions
Zhaojian Wang, Wei Wei, Changhong Zhao +3
In this paper, we investigate the continuous time partial primal-dual gradient dynamics (P-PDGD) for solving convex optimization problems with the form $ \min\limits_{x\in X,y\inΩ}…
Multi-Level Optimal Power Flow Solver in Large Distribution Networks
Xinyang Zhou, Yue Chen, Zhiyuan Liu +2
Solving optimal power flow (OPF) problems for large distribution networks incurs high computational complexity. We consider a large multi-phase distribution network of tree topolog…