88 citations · 109 across the 23 of their papers we have counts for
24 papers
AC-Aware Steady-State Security Region Characterization via Exclusion Refinement
Zhirou Wang, Zhengshuo Li, Shuo Yang
As active power dispatch becomes increasingly coupled with reactive power support and voltage security in modern power systems, AC security regions (AC-SRs) under exact steady-stat…
A Counterexample to Two Representative Unit Aggregation Formulations for Unit Commitment
Zixuan Duan, Zhengshuo Li
Unit aggregation removes symmetry among identical generators in unit commitment, but an aggregate formulation is feasible-region exact only if every aggregate trajectory it admits…
TSO-DSO Coordination for Flexibility Management Across Voltage Levels
Gustavo Valverde, Anibal Sanjab, Florin Capitanescu +4
Several sources of flexibility in transmission and, especially, distribution networks are being unlocked by advances in information and communication technologies, aggregators, and…
Network-Security Informed Offer-Making of Aggregator with Utility-Owned Storage Lease Opportunity: Stochastic Stackelberg Game and Distributed Solution Methods
Congcong Liu, Zhengshuo Li
Aggregators of distributed energy resources are increasingly encouraged to participate in wholesale market bidding. However, the delivery of the power they are awarded can result i…
Communication-robust and Privacy-safe Distributed Estimation for Heterogeneous Community-level Behind-the-meter Solar Power Generation
Jinglei Feng, Zhengshuo Li
The rapid growth of behind-the-meter (BTM) solar power generation systems presents challenges for distribution system planning and scheduling due to invisible solar power generatio…
Stochastic Real-Time Economic Dispatch for Integrated Electric and Gas Systems Considering Uncertainty Propagation and Pipeline Leakage
eiyao Zhao, Zhengshuo Li, Jiahui Zhang +2
Gas-fired units (GFUs) with rapid regulation capabilities are considered an effective tool to mitigate fluctuations in the generation of renewable energy sources and have coupled e…
Assessment of Continuous-Time Transmission-Distribution-Interface Active and Reactive Flexibility for Flexible Distribution Networks
Shuo Yang, Zhengshuo Li, Ye Tian
With the widespread use of power electronic devices, modern distribution networks are turning into flexible distribution networks (FDNs), which have enhanced active and reactive po…
Power-Flow-Embedded Projection Conic Matrix Completion for Low-Observable Distribution Systems
Xuzhuo Wang, Guoan Yan, Zhengshuo Li
A low-observable distribution system has insufficient measurements for conventional weighted least square state estimators. Matrix completion state estimators have been suggested,…
Outlier-immune Data-driven Linear Power Flow Model Construction via Mixed-Integer Programming
Guoan Yan, Zhengshuo Li
The common approaches to construct a data-driven linear power flow (DD-LPF) model cannot completely eliminate the adverse impacts of outliers in a training dataset. In this letter,…
Distributionally Robust Evaluation for Real-Time Flexibility of Electric Vehicles Considering Uncertain Departure Behavior and State-of-Charge
Yixin Li, Zhengshuo Li
Accurately evaluating the real-time flexibility of electric vehicles (EVs) is necessary for EV aggregators to offer ancillary services. However, regulation-caused uncertain state-o…
Coordinated Frequency-Constrained Stochastic Economic Dispatch for Integrated Transmission and Distribution System via Distributed Optimization
Ye Tian, Zhengshuo Li
When large-scale uncertain centralized and distributed renewable energy sources are connected to a power system, separate dispatching of the transmission power system (TPS) and the…
Dynamic Security Region of Natural Gas Systems in Integrated Electricity-Gas Systems
Han Gao, Peiyao Zhao, Zhengshuo Li
In an integrated electricity-gas system (IEGS), the tight coupling of power and natural gas systems is embodied by frequent changes in gas withdrawal from gas-fired units to provid…
Joint Chance-Constrained Economic Dispatch Involving Joint Optimization of Frequency-related Inverter Control and Regulation Reserve Allocation
Ye Tian, Zhengshuo Li, Wenchuan Wu +1
The issues of uncertainty and frequency security could become significantly serious in power systems with the high penetration of volatile inverter-based renewables (IBRs). These i…
Robust Data-Driven Linear Power Flow Model with Probability Constrained Worst-Case Errors
Yitong Liu, Zhengshuo Li, Junbo Zhao
To limit the probability of unacceptable worst-case linearization errors that might yield risks for power system operations, this letter proposes a robust data-driven linear power…
A Physics-based and Data-driven Linear Three-Phase Power Flow Model for Distribution Power Systems
Yitong Liu, Zhengshuo Li, Yu Zhou
Distribution power systems (DPSs) are mostly unbalanced, and their loads may have notable static voltage characteristics (ZIP loads). Hence, despite abundant papers on linear singl…
An Improved Benders Decomposition Algorithm for Steady-State Dispatch Problem in an Integrated Electricity-Gas System
Han Gao, Zhengshuo Li
Optimally operating an integrated electricity-gas system (IEGS) is significant for the energy sector. However, the IEGS operation model's nonconvexity makes it challenging to solve…
Enhanced Sufficient Battery Model for Aggregate Flexibility of Thermostatically Controlled Loads Considering Coupling Constraints
Guangrui Wang, Zhengshuo Li
This letter proposes an enhanced sufficient battery model (ESBM) as well as a binary search algorithm for a sharp inner-approximation of the aggregate flexibility of thermostatical…
Study on Leveraging Wind Farm Reactive Power Potential for Uncertain Power System Reactive Power Optimization
Yu Zhou, Zhengshuo Li
This paper suggests leveraging reactive power potential (RPP) embedded in wind farms to improve power system operational safety and optimality. First, three typical RPP provision a…
Interval State Estimation with Uncertainty of Distributed Generation and Line Parameters in Unbalanced Distribution Systems
Ying Zhang, Jianhui Wang, Zhengshuo Li
Distribution system state estimation (DSSE), which provides critical information for system monitoring and control, is being challenged by multiple sources of uncertainties such as…
Robust Estimation of Reactive Power for an Active Distribution System
Zhengshuo Li, Jianhui Wang, Hongbin Sun +2
Increasing distributed energy resources (DERs) may result in reactive power imbalance in a transmission power system (TPS). An active distribution power system (DPS) having DERs re…
Generalized Master-Slave-Splitting Method and Application to Transmission-Distribution Coordinated Energy Management
Zhengshuo Li, Hongbin Sun, Qinglai Guo
Transmission-Distribution coordinated energy management (TDCEM) is recognized as a promising solution to the challenge of high DER penetration, but there is a lack of a distributed…
A Response-Function-Based Coordination Method for Transmission-Distribution-Coupled AC OPF
Zhengshuo Li, Qinglai Guo, Hongbin Sun +2
With distributed generation highly integrated into the grid, the transmission-distribution-coupled AC OPF (TDOPF) becomes increasingly important. This paper proposes a response-fun…
A Water Mass Method and Its Application to Integrated Heat and Electricity Dispatch Considering Thermal Dynamics
Yuwei Chen, Qinglai Guo, Hongbin Sun +3
Currently, most district heating networks are running in a heat-setting mode, limiting the adjustment of the electrical power of combined heat and power (CHP) units. By considering…
Further Discussions on Sufficient Conditions for Exact Relaxation of Complementarity Constraints for Storage-Concerned Economic Dispatch
Zhengshuo Li, Qinglai Guo, Hongbin Sun +1
Storage-concerned economic dispatch (ED) problems with complementarity constraints are strongly non-convex and hard to solve because traditional Karush-Kuhn-Tucker (KKT) conditions…