A5056336616- Power System Optimization and Stability
- Optimal Power Flow Distribution
- Power System Reliability and Maintenance
- Smart Grid Security and Resilience
- Power Systems and Technologies
- Electric Power System Optimization
- Distributed and Parallel Computing Systems
- Power Systems Fault Detection
- Microgrid Control and Optimization
- HVDC Systems and Fault Protection
- Smart Grid Energy Management
- Cloud Computing and Resource Management
- Smart Grid and Power Systems
- Model Reduction and Neural Networks
- Real-time simulation and control systems
- Computational Physics and Python Applications
- Frequency Control in Power Systems
- Advanced Data Storage Technologies
- Service-Oriented Architecture and Web Services
- High-Voltage Power Transmission Systems
- Complex Network Analysis Techniques
- Robotic Mechanisms and Dynamics
- Software Engineering and Design Patterns
- Advanced Algorithms and Applications
- Industrial Technology and Control Systems
Hainan University
2025
Institute of Electrical and Electronics Engineers
2024
Institut für Sozialforschung und Sozialwirtschaft
2003-2024
Institute of Process Engineering
2023-2024
Northeastern University
2007-2024
Robotic Technology (United States)
2022
Hebei University of Technology
2012
Texas A&M University
1999-2003
Harbin Institute of Technology
2002
Fujitsu (United States)
2002
Cascading failures present severe threats to power grid security, and thus vulnerability assessment of grids is significant importance. Focusing on analytic methods, this paper reviews the state art methods in context cascading failures. These are based steady-state modeling or high-level probabilistic modeling. The impact emerging technologies including phasor technology, high-performance computing techniques, visualization techniques then addressed, future research directions presented.
This paper is a result of ongoing activity carried out by Understanding, Prediction, Mitigation and Restoration Cascading Failures Task Force under IEEE Computer Analytical Methods Subcommittee (CAMS). The task force's previous papers are focused on general aspects cascading outages such as understanding, prediction, prevention restoration from failures. the second two new papers, which extend this work to summarize state art in failure risk analysis methodologies modeling tools. first...
Motivated by the Federal Energy Regulatory Commission's (FERC) recent direction and ever-growing interest in cloud adoption power utilities, a Task Force was established to assist system practitioners with secure, reliable cost-effective of technology meet various business needs. This paper summarizes drivers, challenges, guidance, best practices for systems from Force's perspective, after extensive review deliberation its members, including grid operators, utility companies, software...
In this paper, we introduce an approach for a fast assessment of the dynamic characteristics system frequency during period cold load pickup following large-scale blackout. The is developed based on model and generation control system: considers unique time-dependent characteristic inrush power surges pickup, while mimics various governors that are crucial to determination key variables including initial rate change, nadir settling frequency. With proposed linearization estimation methods,...
This paper proposes a neural network solution methodology for the problem of real power transfer capability calculations. Based on optimal flow formulation problem, inputs, are generator status, line status and load output is capability. The Quickprop algorithm used in to train network. A case study IEEE 30-bus system presented demonstrating feasibility this approach. new method will be useful reliability assessment utility environment.
This paper applies a phasor-only state estimator (PSE) to large power system consisting of two control regions, using synchrophasor data from 56 765/345/230 kV substations. Although the technique has been previously developed, this describes topology processor determine redundant clusters connected buses such that PSE can be used in real time. allows corrections for phase biases, transformer taps, and current magnitude scaling. The ability simultaneously solve regions is due PMU monitoring...
Power system simulations play a critical role in power grid planning studies. These studies become more computationally intensive as the result of increasing level uncertainty and complexity. The deficiency associated with existing on-premise computing infrastructure meeting these computational needs makes cloud an attractive alternative. A pilot project was initiated at ISO New England (ISO-NE) to explore feasibility implementation for simulations. In this paper, concept computing,...
The accurate measurement of the thermal contact resistance between multilayers within press pack insulated gate bipolar transistors (PP IGBTs) is significant for optimizing their to improve reliability, as accounts about 50% total under rated clamping force. components PP IGBTs are very small, and an external force needed ensure they work normally. Thus, methods steady-state transient no longer suitable. In this paper, method structure function proposed measure IGBTs. impedance curve key...
Leaf nitrogen content is a critical quantitative indicator for the growth of rubber trees, and accurately determining this holds significant value agricultural management precision fertilization. This study introduces novel feature extraction framework—SFS-CAE—that integrates Sequential Feature Selection (SFS) method with Convolutional Autoencoder (CAE) technology to enhance accuracy estimation. Initially, SFS algorithm was employed select spectral bands from hyperspectral data collected...
This paper addresses the testing and implementation of a fast process for sequential contingency simulation in order to identify potential cascading modes due thermal overloads. It also presents computation vulnerability index cascading, based on estimated likelihood consequences outages. The approach described this offers unique capability automatically initiating events that may lead predicts development by identifying visualizing tiers. proposed was implemented using 50,000-bus Eastern...
Following a line outage, the fast corrective operations of transmission switching might be used to regain N−1 security system without generation re-dispatch or load shedding. The problem find feasible can formulated as Constraint Satisfaction Problem (CSP). Feasibility checking, however, is difficult since changes in flows caused by are discontinuous, and many contingency cases need examined. In this paper, DC flow considered for simplicity, variables include binary statuses continuous phase...
The increased penetration of renewable resources and retirement traditional generation units are posing new challenges to power system operations planning meet the ever-growing demand for more computing run large-scale, computationally intensive simulations. As on-premises infrastructure loses pace constantly increasing needs, cloud has become an attractive addition average capacity, alternative meeting peak demands. ISO New England (ISO-NE) pioneered use technology large-scale simulations,...
A comprehensive ad hoc PMU data validation process is introduced. The proposed includes verification as well diagnosis of common problems. utilizes from PMU, SCADA and state estimation sources. More than 18 months deployment at ISO-NE has proven the efficiency process. This paper presents discusses quality issues their causes. real-time monitoring tool also based on this under development ISO-NE.
The continuing rollout of phasor measurement units enables wide area monitoring and control (WAMS/WACS), but the difficulty sharing data in a secure, scalable, cost-effective, low-latency manner limits exploitation this new capability by bulk electric power grid operators. GridCloud is an open-source platform for real-time acquisition across jurisdictions that interconnected grid. It leverages commercial cloud tools to reduce costs, employing cryptographic methods protect sensitive data,...
This paper presents analysis results of synchronized phasor data from 10 disturbance events recorded in the US Eastern Interconnection (EI). The covers a wide region EI, allowing for study propagation, interarea modes, and oscillations voltages currents. is not straightforward because EI meshed system with adequate mode damping. Disturbances involving tripping single large generator unit produce very short swing responses. Islanding regions at perimeter, however, provide more prominent...
This paper introduces the concept of Region Of Stability Existence (ROSE) and describes framework for utilizing PMU data computing this region operational margins. The approach presented in is an automated process to continuously monitoring transmission system real-time environment by accurately calculating power stability Voltage constraints, thermal limits steady-state are simultaneously monitored during analysis. shown on planes two phase angles real powers. also demonstrates effect...
Dynamic equivalencing has been developed to address the computational issues raised by need for dynamic security assessment (DSA) of modern interconnected electric power systems. As an effort incorporate into on-line DSA, a new Reduction Program (DYNRED) EPRI in 2010. It provides more compatible environment current component models and practical realization coherency identification generator aggregation methodologies. This study is dedicated validate efficacy DYNRED applications large-scale...
This paper proposes a synchrophasor-based approach for prediction of inter-area angular instability in interconnected power systems and decision support on mitigation actions. The is performed two stages: 1) offline identifying clusters generators to be monitored by synchrophasors developing mitigation-strategy table potential out-of-step scenarios; 2) online monitoring dynamic grouping the estimating risk index out step each interface where have either large angle distance or significant...
This paper introduces a new designed modular tactile sensing dexterous hand for domestic service robots. fully-actuated consists of 1 palm and 3 fingers, with embedded sensors, motors control boards. The each finger have 2 degrees freedom (DOFs). design makes it easy to attach detach the hand, even by inexperienced users. sensor unit structure can help decrease number keep good ability. A series experiments test evaluated performance an object set was performed in this paper. results show...