A5101843431- High voltage insulation and dielectric phenomena
- Thermal Analysis in Power Transmission
- Power Transformer Diagnostics and Insulation
- Lightning and Electromagnetic Phenomena
- Advanced Fiber Laser Technologies
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- High-Voltage Power Transmission Systems
- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Plasma Diagnostics and Applications
- Analytical Chemistry and Sensors
- Plasmonic and Surface Plasmon Research
- Advanced Data Storage Technologies
- Experimental and Theoretical Physics Studies
- Electrostatic Discharge in Electronics
- Optical Imaging and Spectroscopy Techniques
- Aerosol Filtration and Electrostatic Precipitation
- Vacuum and Plasma Arcs
- Power Systems and Technologies
National University of Defense Technology
2020
China Southern Power Grid (China)
2019-2020
Xi'an Jiaotong University
2019
Huazhong University of Science and Technology
2017
Abstract Physics phenomena of multi-soliton complexes have enriched the life dissipative solitons in fiber lasers. By developing a birefringence-enhanced laser, we report first experimental observation group-velocity-locked vector soliton (GVLVS) molecules. The laser facilitates generation GVLVSs, where two orthogonally polarized components are coupled together to form complex. Moreover, interaction repulsive and attractive forces between multiple pulses binds particle-like GVLVSs time...
In GIS disconnector, the pull rod acts as an insulating support for connecting current-carrying conductor and shell. It bears large voltage strong machinery a long time. During assembly live operation, may be damaged, various defects appear inside outside rod, which affects stable operation of GIS. order to study defects' influence on insulation performance three-dimensional model disconnector was established in this paper. The electric field distribution isolating switch under normal...
Electric charge will accumulate on the GIL (gasinsulated metal-enclosed transmission line) insulator under DC voltage, which distort electric field distribution at solid-gas interface and cause flashover voltage to drop. It is main reason that hinders application of GIL. A study optimization structure in was carried out a graded type proposed. The similar bushing core, uses multiple layers electrodes clamp potential insulator, regulates surface. simulation analysis proves meets design requirements.
With research and development of high voltage technologies, electrical materials, computational simulation plasma physics, the concept engineering (CHVE) is proposed, as a new discipline, to solve or explain practical problems with support applied mathematics computer science. This paper introduces technical application drivers CHVE, elaborates its definition, scope discipline architecture, then discusses theoretical foci potential this subject. CHVE will cover study discharge modeling,...
To date, little research has been carried out on the integration of switchable and diversified functionalities into a single metamaterial in terahertz (THz) range. Here, hybrid vanadium dioxide (VO2) was designed with properties band-pass filter band-stop frequency range 0.3–1.6 THz. Simulations demonstrated that under TE polarization, proposed system acted as center 0.95 THz when VO2 is insulating state. Upon transformation metallic state, behaved transmittance >80%. The physical...
The influence of carrier mobility on the space charge transport behavior inside oil-impregnated pressboard insulation converter transformers cannot be neglected. However, at present, current knowledge is usually derived from empirical or theoretical values, lacks experimental studies, and often ignores effects temperature field strength under actual operating conditions. In this paper, based variable-temperature surface potential decay (SPD) method, a measurement platform for established,...
We investigated the dependence of scattering and absorption coefficients particles in dense suspensions by low-coherence fiber optic dynamic light (FODLS) technique. The estimated particle size was used to calculate coefficient suspended suspensions. path-length resolved intensity distributions backscattered from absorbing were experimentally. can be obtained applying measured modified Lambert-Beer law. As a result, FODLS technique simultaneously measure suspensions, are independent each...
The design limit of surface electric field intensity valve hall fittings is the key technical index to prevent corona discharge during operation. This can be obtained by correction fittings. However, cannot measured directly and accurately experiment. At present, test combined with finite element calculation an effective method. Corona experiments glossy spherical electrodes different diameters were carried out in this paper, dc voltage 33-1000mm diameter electrode samples was obtained....
With the proposal of urban synthesis underground transmission pipeline, use scenario GIL will become more and widespread. When is used at power distribution grid, in order to reduce line loss improve surge-impedance loading, compact was designed. Three-phase tri-post insulator an important part it. However, metal defects often appear GIL. It would weaken insulation strength if it not restrained or cleaned up time. To support design particle collector provide suggestions for cleaning...
Physics phenomena of multi-soliton complexes have enriched the life dissipative solitons in fiber lasers. By developing a birefringence-enhanced laser, we report first experimental observation group-velocity-locked vector soliton (GVLVS) molecules. The laser facilitates generation GVLVSs, where two orthogonally polarized components are coupled together to form complex. Moreover, interaction repulsive and attractive forces between multiple pulses binds particle-like GVLVSs time domain further...
Fittings like spacers are vital parts in the valve hall which could connect lines and buses. However, without proper arrangement structure would result unexpected flashover or discharge, thus to risk safety of whole hall. In this paper, finite element simulation model ± 800kV HVDC-flexible low voltage was established software Comsol. The overall electric field distribution calculated analyzed. addition, e-field several kinds splitting spacer were also studied compared, with experiments...
Two faults of 550kV transformer bushing are introduced and the fault phenomenon is discussed. The failure resin impregnated fiberglass type with compound filled. In order to find cause, electric field design examined by 2D 3D finite element simulation. influence nearby earthing objects on inside studied. Based simulation results, it can be concluded that unreasonable internal shielding pipe direct cause fault.