A5083613915- Icing and De-icing Technologies
- Gas Sensing Nanomaterials and Sensors
- 2D Materials and Applications
- Aerosol Filtration and Electrostatic Precipitation
- Smart Materials for Construction
- Thermal Analysis in Power Transmission
- Geophysics and Gravity Measurements
- Power Line Inspection Robots
- High voltage insulation and dielectric phenomena
- GNSS positioning and interference
- Plasma and Flow Control in Aerodynamics
- ZnO doping and properties
- Ionosphere and magnetosphere dynamics
- Advanced Photocatalysis Techniques
- Surface Modification and Superhydrophobicity
- Ga2O3 and related materials
- MXene and MAX Phase Materials
- Advanced Thermoelectric Materials and Devices
- Refrigeration and Air Conditioning Technologies
- Marine Ecology and Invasive Species
- Electrochemical Analysis and Applications
- Arctic and Antarctic ice dynamics
- Heat Transfer and Boiling Studies
- Methane Hydrates and Related Phenomena
- Heat Transfer and Optimization
Chongqing University
2005-2025
Lanzhou Jiaotong University
2020
Abstract In winter, the ice‐covered conductors pose a significant influence to safe operation of power grids. Despite extensive research in this area, measuring on‐site ice accurately remains major challenge. Obtaining accurate data thickness and density is basis disaster prevention emergency treatment The current measurement methods based on line's tension insulator string's inclination or video image are commonly used at grids, which cannot monitor actual thickness, also measure density....
Environmental meteorological parameters (temperature, humidity, air pressure, etc.) have an important impact on short gap streamer discharge. Based the theory and particle continuity equation of gas discharge, a discharge simulation model is established, influence environmental dynamic development process simulated analyzed. The characteristics were tested in self-made chamber. results show that at low humidity (relative <80%), with increase electron density channel increases, field...
SF6 surge arrester on ultra-high voltage transmission lines plays a critical role in the entire power system. They not only protect electrical equipment from dangers of high transient over voltages, but also bear responsibility maintaining safety and stability lines. Detecting decomposed gases under polluted conditions inside arresters is paramount importance. In this paper, based extensive investigations application density functional theory 2D materials, we conducted study detection (HF,...
In this study, the gas-sensing mechanism of ZnO, TiO2, and Ag <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{{2}}\text{O}$ </tex-math></inline-formula> modified SnS2 toward dissolved gases (CO, CH4, notation="LaTeX">$\text{C}_{{2}}\text{H}_{{2}}$ , notation="LaTeX">$\text{C}_{{2}}\text{H}_{{4}}{)}$ in transformer oil was studied based on density functional theory (DFT). The structure, adsorption band...
Abstract Unclean air discharge refers to the phenomenon of a large number polluting gases, droplets or solid particles floating in air, which will cause insulation breakdown and safety accidents for power transmission equipment that have been left outdoors long time. In order investigate effects particle concentration, size dielectric constant on DC characteristics unclean gap, self‐made chamber was designed this study. The filtered passed into remove influence impurities contained...
Abstract Air gap impulse discharge characteristics of railway tunnel‐catenary at high‐altitude are great significance to the electrical insulation design. The existing altitude correction methods for non‐uniform air gaps not applicable tunnel‐catenary. To investigate tunnel‐catenary, a typical structural model was built in an artificial climate chamber. Different altitudes were simulated by adjusting atmospheric pressure. 50% breakdown voltages 300–700 mm tested 243–4000 m. test found that...
Icing seriously threatens the safety of transmission lines. Transferring current bundled sub-conductors through smart de-icing device is a promising method. In this study, site experiments on based method by transferred conductors were carried out in natural environment at xuefeng mountain national field science observatory chongqing university. The was hanged glaze tower and connected between 4-bundled (4×LGJ400/35) rectifier which equipped with other so that high acceptable for study....
This paper calculates and analyzes the collision freezing characteristics of water droplets on cylindrical conductors with different diameters deduces variation law icing weight change rate rotating wind speed, ambient temperature, liquid content, median volume diameter. Then, a prediction value-seeking method environment parameters based circular is determined. The laboratory test results show that measured values temperature T, speed U, content w diameter MVD are in good conformity...
In the mechanical cutting process, replacement of traditional solution with cold air can avoid pollution environment. order to high efficient refrigerating device and flexible adjust temperature air, it is necessary use cascade refrigeration system supply cool quantity for compressed air. The introduction a two-component non-azeotropic mixing refrigerant into cryogenic part system, effectively solve problems working at too pressure volume expanding in case sets closed down. However, filling...
Abstract The change of the earth’s surface environmental load is an important factor that causes crustal short-term movement. project address in eastern part Qilian Mountain, and we take vertical deformation gravity changes affected by as research object. Based on theory, use data GNSS continuous reference stations meteorological region to study evolution between atmospheric movement from 2012 2017. results show atmosphere Mountains periodically varies with seasons. On average, pressure low...