A5043260707- Electric Motor Design and Analysis
- Magnetic Properties and Applications
- HVDC Systems and Fault Protection
- High-Voltage Power Transmission Systems
- Evacuation and Crowd Dynamics
- Thermal Analysis in Power Transmission
- Oil and Gas Production Techniques
- Fluid Dynamics and Vibration Analysis
- Heat Transfer Mechanisms
- Machine Fault Diagnosis Techniques
- Aerosol Filtration and Electrostatic Precipitation
- Advanced Sensor and Control Systems
- Induction Heating and Inverter Technology
- Transportation Planning and Optimization
- Power Systems and Renewable Energy
- Power System Optimization and Stability
- Turbomachinery Performance and Optimization
- Power Transformer Diagnostics and Insulation
- Opportunistic and Delay-Tolerant Networks
- Electrical Fault Detection and Protection
- Silicon Carbide Semiconductor Technologies
- Aerogels and thermal insulation
- Traffic control and management
- Refrigeration and Air Conditioning Technologies
- Wind Turbine Control Systems
Tsinghua University
2011-2024
Beijing Jiaotong University
2018-2024
China National Petroleum Corporation (China)
2021
Harbin Institute of Technology
2009
State estimation plays a critical role in monitoring and managing operation of smart grid. Nonetheless, recent research efforts demonstrate that data integrity attacks are able to bypass the bad detection mechanism make system operator obtain misleading states system, leading massive economic losses. Particularly, have become threats power In this paper, we propose deep-Q-network (DQND) scheme defend against alternating current (AC) systems. DQND is deep reinforcement learning scheme, which...
In order to solve the problems of severe heating and cooling difficulty in stator air-cooled turbo-generator, a novel teeth internal ventilation structure with axial vents generator is proposed. Based on this structure, global two-dimensional electromagnetic field models 150MW turbo-generator different tooth structures are established study influence air gap magnetic flux density generator, teeth, core loss, synchronous reactance. Furtherly, flow network system fluid-heat transfer numerical...
A synchronous condenser (SC) can provide the transient reactive power support for Ultra High Voltage Direct Current (UHVDC) converter station. However, rotor temperature rise is generally main factor which limits operation ability of SC. In this article, a structure SC with damping bars made different materials in large teeth proposed to reduce rise. order obtain influence on rise, loss and distribution 300-MVar under single-phase short-circuit fault are calculated by coupling...
A dual-excited synchronous generator (DESG) with two field windings on the rotor has better dynamic characteristics and high stability. However, realization of function needs a reasonable excitation control strategy. In this article, power tracking (PTEC) is proposed to improve operating performances DESG. The processes 300-MW DESG PTEC are calculated after disturbance torque reactive by time-stepping finite element model, results superior those adopting traditional dual-channel control. To...
Road side infrastructures with certification and service aid are important in secure vehicular communication. Few road infrastructure issues have been addressed former studies. Lacking trusted certification, scalability, efficiency intrusion detection vehicle-only network causes various attacks. In this paper we propose an autonomous approach. Some preselected administratively the others gather towards formers autonomously. same cache forward certificates, which invisible to other network....
The air-cooled turbo-generator often works in the more frequent start-up and shut-down operation. Either misoperation or failure of synchronizing controllers can cause out phase synchronization fault. fault disturb power angle a strong impact electromagnetic force for generator. With traditional numerical calculation method, it is difficult to calculate variations key physical parameters field end region generator under complex working conditions, especially In order solve problem, method...
Large-scale air-cooled generators are the most widely used generators. The internal air flow state and heat transfer characteristics of rotor difficult to accurately characterize under high pressure wafter rotating centrifugal pressure. This paper presents a new calculation method for coupling totally enclosed circulation global ventilation network model with distributed parameters local multi-physical field numerical rotor. By establishing parameters, distribution in key wind regions...
The Dual Excitation Synchronous Generator (DESG) has two sets of field windings that can be independently excitation regulated, thus better stability and reliability than the Traditional (TSG). However, special structure mode DESG result in transient parameters are very different from those TSG. Therefore, calculation method TSG is not applicable to calculate DESG. In this paper, a Time-Stepping Finite Element Model (T-S FEM) established study impact on parameters. under saturation states...
The stator main insulation is the key component of turbo-generator, which related to thermal aging turbo-generator. It vital accurately judge generator by calculating temperature distribution under normal operation and fault operation. In this paper, taking a 150 MW air-cooled turbo-generator as an example, field was studied after shelling. Based on finite element method, shelling calculated. position maximum drop along circumference axial direction were analyzed. At same time, with gap...