A5072790190- High voltage insulation and dielectric phenomena
- Thermal Analysis in Power Transmission
- Electrical Fault Detection and Protection
- Antenna Design and Analysis
- Aerodynamics and Fluid Dynamics Research
- Mechanical stress and fatigue analysis
- Energy Harvesting in Wireless Networks
- Power Transformer Diagnostics and Insulation
- Microwave Engineering and Waveguides
- High-Voltage Power Transmission Systems
- Advanced Antenna and Metasurface Technologies
- Synthesis and properties of polymers
- Nanofluid Flow and Heat Transfer
- Heat Transfer and Boiling Studies
- Concrete Corrosion and Durability
- RFID technology advancements
- Digital Transformation in Industry
- Ultrasonics and Acoustic Wave Propagation
- Electrical Contact Performance and Analysis
- Advanced Neural Network Applications
- Advanced machining processes and optimization
- Power Line Inspection Robots
- Advanced Machining and Optimization Techniques
- Electromagnetic Launch and Propulsion Technology
- Magnetic Properties and Applications
South China University of Technology
2007-2024
Chongqing University of Posts and Telecommunications
2022
Ground wire breakage accidents can destroy the stable operation of overhead lines. The excessive temperature increase arising from contact resistance between ground and armor rod in terminal is one main reasons causing wires. Therefore, it necessary to calculate equivalent for wires twined with rods terminals. According actual distribution characteristics points terminal, a three-dimensional electromagnetic field simulation model was established. Based on model, current obtained....
Based on the theory of ultrasonic guided wave propagation, a simplified model bilayer composite insulator was constructed, and dispersion curves longitudinal (L) torsional (T) modes were obtained. To address problem debonding, propagation velocity energy decay waves in studied, method for detecting axial circumferential debonding proposed based attenuation characteristics. On basis theoretical analysis, experiments conducted to detect insulator. The experimental results showed that: same...
Abstract Obtaining an accurate hot‐spot temperature of oil‐natural air‐natural (ONAN) transformer is important for evaluating its operation status and load capacity. To meet the overload requirement, cooling fan usually added to operating ONAN as auxiliary equipment. However, evaluation methods in this case lacked discussion currently. address issue, improved method considering thermal resistance on air side radiator was proposed paper. Subsequently, calculation key parameter (the convective...
With the increase in electricity demand, ampacity calculation based on dynamic thermal rating (DTR) technology is increasingly significant for assessing and improving power transfer capacity of existing overhead conductors. However, DTR models now available present some inadequacies measurement techniques related to wind speed. Therefore, it essential propose a new model instead speed measuring technology. In this paper, influence analysis various weather parameters conductor carried out by...
For the study of transient overvoltage (TOV) in an offshore wind farm (OWF) collector system caused by switching off vacuum circuit breakers (VCBs), a simplified experimental platform OWF medium-voltage (MV) cable was established this paper to conduct operation tests VCB and obtain characteristic parameters for VCB, especially dielectric strength parameters; also, effectiveness reignition model verified. Then, PSCAD/EMTDC used construct MV OWF, effects normal fault on TOV amplitude,...
With the increase of power load, overheating problem oil-immersed transformer in operation cannot be ignored. Therefore, it is necessary to propose reasonable heat dissipation enhancement measure for and study influence on internal temperature transformer. The transfer process analyzed, air-side coefficient pointed out important parameter limiting capacity In order improve capacity, measures based cooling fans falling film are proposed calculation methods conducted, respectively. Moreover,...
Abstract It is of great significance to ensure the safe and reliable operation power grid by effectively evaluating disaster risk lines arranging sequence line guard reasonably. A assessment method transmission based on TOPSIS proposed in this paper where six typical natural disasters are considered, comprehensive values different under combined with hazards accidents determined, multiple realized, its feasibility verified applying it a certain area China Southern grid.
This paper presents a novel broad bandpass with coplanar resonators. filter is built using open- and shorted-ended strips. Lumped-element equivalent circuit presented, its performances investigated compared in terms of bandwidth.
Metal cutting process optimization problem has been extensively studied in the past few decades, researchers either conduct experimental design, develop heuristic algorithms or design expert system to optimize parameters. The main idea of research is a set parameters before executing entire steps, which fails effectively respond needs dynamic manufacture environment. However, very little focused on during process. Digital twin commonly known as enabling technology solve industrial sector....
With the rapid growth of power demand, conductor ampacity calculation method based on dynamic thermal rating (DTR) becomes more and important. Based shortcomings current DTR models, a new model that does not need to measure wind speed operating state is proposed, which called equivalent heat transfer (EHT) model. However, there are still in accuracy EHT application. In this paper, improved at first according consideration effect air physical parameters redetermination experimental equipment....