A5101748079- Power Transformer Diagnostics and Insulation
- High voltage insulation and dielectric phenomena
- Radiative Heat Transfer Studies
- Heat Transfer Mechanisms
- Thermal Analysis in Power Transmission
- Power Quality and Harmonics
- Heat Transfer and Optimization
- Magnetic Properties and Applications
- Power Systems and Technologies
- nanoparticles nucleation surface interactions
- Nonlinear Dynamics and Pattern Formation
- Sensor Technology and Measurement Systems
- Electromagnetic Launch and Propulsion Technology
- Power Systems Fault Detection
- Solar Thermal and Photovoltaic Systems
- Heat Transfer and Boiling Studies
- Coal Combustion and Slurry Processing
- Microfluidic and Bio-sensing Technologies
- Optical Systems and Laser Technology
- Metallurgical Processes and Thermodynamics
- Advanced Computational Techniques and Applications
- Engineering Structural Analysis Methods
- Chemical and Environmental Engineering Research
- Metal Alloys Wear and Properties
- Advanced Electrical Measurement Techniques
China Southern Power Grid (China)
2023-2025
Tsinghua University
2025
University of Manchester
2010-2024
Technical University of Darmstadt
2020
Accurately quantifying gas production during internal faults in transformers is paramount for advancing the digitization and intelligence of electric power equipment. This paper introduces a model grounded thermodynamics to calculate transformer oil pyrolysis gases, leveraging chemical equilibrium theory explore temperature-dependent factors such as heat capacity, reaction enthalpy change, constants. By introducing factor quantify molecule molar fractions, establishes system equations track...
In this paper, a reduced computational fluid dynamics (CFD) model is proposed for determining the total heat dissipation and oil temperature distribution of transformer radiators in natural air (ONAN) cooling mode. radiator CFD model, flow simulation replaced with an optimized transfer coefficient ( <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><i>h</i><i><sub>air</sub></i></b> ) equation. An experimentally verified full which includes...
Harmonics have become an important concern in today's power system network. Conventional Inductive Voltage Transformers (IVT) are used as the essential instrument for harmonic measurement. However, frequency bandwidths of IVTs limited. As a result, they not suitable high order This paper thus presents testing and modelling response 33kV single phase IVT up to 5 kHz. The test setup is described. measured analyzed. A model developed validated by comparing simulation with experimental results....
The concentration patterns of DNA molecules attached to the interface between two immiscible aqueous phases forming under an electric field are studied. pattern formation is driven by hydrodynamic interactions originating from electro-osmotic flow due Debye layer around a molecule. A nonlinear integrodifferential equation derived describing time evolution at liquid-liquid interface. linear stability analysis this shows that mode given wavelength initially stable, but destabilizes after...
With the increasing connections of generation using power electronics and transmission network capacity embedded FACTS devices, measurement higher than 50th voltage harmonics is growing importance. This paper presents how to use recent proposed Power Quality Sensor (PQ Sensor) adding onto existing Capacitor Voltage Transformer (CVT) infrastructure measure high orders transients accurately. A CVT circuit with PQ sensor was modelled simulated. The performances were evaluated tested under...
The lifetime and reliability of power transformers are primarily dependent on the hot-spot temperature in windings, as is most important factor determining insulation degradation rate. Key to removing heat from transformer radiator which must be carefully designed keep temperatures within limits under all operating conditions whilst minimizing size, weight cost. This paper compares analytical method used predict performance with computational fluid dynamics (CFD) models terms dissipation. It...
The hot-spot temperature of the insulation system has a very important effect on life power transformer, for better management and extending it is to quickly accurately predict heat distribution characteristics with winding part transformer. In this paper, model based dimensional analysis method proposed thermal transformers in real time. Taking 110 kV oil-immersed transformer as an example, CFD was established complete conjugate transfer model, 34 simulation samples were used establish...
As gravitational wave detectors become more advanced and sensitive, the number of signals recorded by Advanced LIGO Virgo from merging compact objects is expected to rise dramatically. This surge in detection rates necessitates development adaptable, scalable, efficient tools capable addressing a wide range tasks astronomy. Foundational AI models present transformative opportunity this context providing unified framework that can be fine tuned for diverse applications while leveraging power...
As an important outlet structure of the transformer, ascending flanged base has characteristics large lead current, high electric field and complex distribution. Due to electromagnetic force on winding magnetostriction iron core, transformer will vibrate during operation. In this paper, modal analysis is used obtain natural frequency vibration mode base, harmonic response its response. Finally, random find that weakest raised seat bolt connected pressure equalizing ball, life was predicted...
In recent years, bushing life is the main concern in transformer research, which related to its hot spot temperature. It very important for stable operation of and power system carry out effective thermal management according temperature distribution bushing. view problem insufficient analysis under influence solar radiation dielectric loss, a 110kV oil-paper capacitor studied this paper, corresponding model established analysis. The effects loss on surface are basis current heat solid...
The insulation lifetime of power transformers is primarily dependent on the hot-spot temperature (HST) transformers, as HST most important factor determining degradation rate. To control a liquid-immersed transformer, an insulating liquid used to transfer heat generated from active part surrounding ambient environment through radiators. Therefore, understanding thermal performance radiators for transformer design. In this paper, analytical method was proposed determine total dissipation and...