A5102013418- Advanced Sensor and Energy Harvesting Materials
- Ferroelectric and Piezoelectric Materials
- Fire dynamics and safety research
- High voltage insulation and dielectric phenomena
- Acoustic Wave Resonator Technologies
- Fiber-reinforced polymer composites
- Electromagnetic wave absorption materials
- Acoustic Wave Phenomena Research
- Dielectric materials and actuators
- Thermal Analysis in Power Transmission
- Microwave Dielectric Ceramics Synthesis
- High Entropy Alloys Studies
- Structural Load-Bearing Analysis
- Hydrogels: synthesis, properties, applications
- Conducting polymers and applications
- Lightning and Electromagnetic Phenomena
- Evacuation and Crowd Dynamics
- Smart Materials for Construction
- Advanced Antenna and Metasurface Technologies
- Advanced Materials and Mechanics
- Electrical Contact Performance and Analysis
- Advanced ceramic materials synthesis
- Flame retardant materials and properties
- Fire Detection and Safety Systems
- Millimeter-Wave Propagation and Modeling
State Grid Corporation of China (China)
2016-2024
North China Electric Power University
2024
China Electric Power Research Institute
2024
National Grid (United States)
2022-2023
Institute of Electrical Engineering
2020
Beijing University of Technology
2018-2019
Global Energy Interconnection Research Institute North America
2019
Flexible sensors have been tremendously attractive in wearable electronics, soft robots and human-machine interaction devices. In this work, conductive silicon rubber (CSR) filled with silver-coated-glass fiber (AGF) carbon (CF) was embedded into polydimethylsiloxane (PDMS) matrix to fabricate a flexible strain sensor (FSS) 3D-printing (3DP) process. It found that the addition of CF plasticizer synergistically formed support-structure which guaranteed CSR be extruded out easily 3DP The...
Si3N4 ceramic materials have great potential in the field of insulation SF6 gas ultra-high-voltage transmission and transformation equipment due to their excellent performance thermal stability. In this paper, Y2O3-Al2O3 was used as a sintering aid prepare high-density (>99%) ceramics through two-step pressureless liquid-phase sintering, mechanism influence addition on microstructure electrical properties studied. The results showed that increasing content could increase grain size...
Abstract With increasing concerns about noise pollution, the pursuit of highly dependable piezoelectric acoustic sensors for real‐time monitoring has come to forefront scientific research. Lead‐based perovskite films, exemplified by lead zirconate titanate Pb(Zr,Ti)O 3 (PZT), surpass traditional materials such as ZnO and AlN in their properties, promising substantial advancements next‐generation sensor technologies. However, toxic nature PZT poses formidable environmental human health risks....
Mn[Formula: see text]-modified [Formula: text] ceramics were prepared via a solid-state reaction approach. Results of detailed characterizations revealed that the addition has influence on grain size, and all samples exhibit pure perovskite structure. As content manganese increases, volume tetragonal phase increases. The with 1.5 mol.% show high electro-strain 0.151% at 2 kV/mm. Therefore, this study provides new insight into role in tailoring electrical properties Sm-PMN-PT by acceptor doping.
In this work, the effects of magnetic field induction on electrical and electromagnetic shielding properties conductive silicon rubbers (CSRs) filled with Ni-coated carbon fibres (Ni/CFs) have been investigated. When intensity is above threshold value 0.10 T during vulcanisation, it beneficial to their property that volume resistivity decreases from 48.7 Ω·cm 1.57 Ω·cm, owing orientation alignment Ni/CFs in CSRs (40 phr). Moreover, aids induction, prepared lower amount Ni-CF filler can...
In this study, two existing fire stopping systems of the valve hall in converter station were selected, and heat transfer process key areas was simulated by ANSYS software under condition a hydrocarbon temperature rise curve. The main thermal parameters, such as field, flux, gradient, obtained, characteristics measuring points tested through Fire Test Furnace one-dimensional conduction model. simulation results show that Model 2 exhibits superior resistance performance compared to 1, maximum...
ABSTRACT A series of low‐carbon fly ash cenosphere plates was prepared using solid waste based cementitious material as binder through a simple process; meanwhile, effects cenosphere's particle size and distribution on microstructure properties were investigated. In the range 20–200 mesh, decreases, sound absorption performance decreases while strength improves. Appropriate grading can effectively improve compressive strength, but it will lead to significant decrease in performance. Samples...
The effects of geometric parameters and constituent material on the flexural wave bandgap a locally resonant double-layer metamaterial plate are investigated using finite element method. Reasonable obtained through optimization; then, made ABS with added aluminum mass blocks is designed. results show that it can open low-frequency (112--124 Hz) at subwavelength size. modeled as an equivalent spring-mass system, frequency range negative density for dynamic consistent width bandgap. generation...
Most previous works concentrated on burning characteristics of pool fire using common fuels such as heptane, propane, biodiesel, and diesel, whereas for transformer oil are barely involved, although is arguable more practical importance in power system. This study performed a series experiments to the open confined spaces. Three fuel thicknesses five initial temperatures changed space. The essential parameters mass loss rate, flame height, plume temperature obtained analyzed. Moreover, three...
This study first conducted surface modification of Ag-plated Tetrapod-like zinc oxide (T-ZnO) whiskers with the use dopamine and prepared T-ZnO (T-ZnO@Ag) by means chemical plating, in which AgNO3 solutions different concentrations were used during preparation. Micro-structures T-ZnO@Ag powders examined to evaluate effect concentration on Ag plating performance. Subsequently, conductive Si rubber samples prepared, as fillers, effectiveness related electromagnetic shielding was investigated...
This paper developed a method for preparing ultrasound-responsive microgels based on reversible addition fragmentation chain transfer-hetero Diels–Alder (RAFT-HAD) dynamic covalent bonding. First, styrene cross-linked network was successfully prepared by (DA) reaction between phosphoryl dithioester and furan using double-ended diethoxyphosphoryl dithiocarbonate (BDEPDF) RAFT reagent-mediated (St) polymerization, with dienophile linker copolymer of furfuryl methacrylate (FMA) St as the...
The aging behavior and life prediction of rubber composites are crucial for ensuring high-voltage transmission line safety. In this study, commercially available ethylene-propylene-diene monomer (EPDM) spacer were chosen investigated to elucidate the structure performance changes under various conditions. results showed an increased C=O peak intensity with increasing time, suggesting intensified oxidation ethylene propylene units. Furthermore, surface morphology commercial EPDM displayed...
Abstract The wall bushings of the converter transformer are often sealed with rock wool for fire prevention, but resistance is not enough hydrocarbon 1 h, which leads to frequent fires in station. In this paper, calcium silicate-bound vermiculite lightweight materials a density less than 900 kg/m 3 were prepared by static hydrothermal autoclaving reaction silicate-rich powder as raw material, expanded aggregate, and fiber reinforced. effect material ratio on bulk density, strength, high...
Abstract Cable trenches and oil-filled equipment areas are prone to electric fires, damaging the power equipment. Fire separation is an effective method prevent spread of cable fire reduce damage grid. In this paper, high-temperature resistance safety new low-carbon inorganic building materials used in transforming stations tested evaluated. It found that floating bead composite geopolymer can meet requirement duration not less than 3 hours with heating curve substation protection...
Abstract The construction of a new power system puts forward higher requirements for the fire safety equipment. Fiber cement board is kind fire-proof material cable trenches in electric fields, but it cannot meet requirement protection. In order to high grade trench substation, Ettringite-rich separating was prepared by using metallurgical slag-sulphoaluminate cementitious system. temperature behavior samples studied calcination test, thermal analysis and microstructure observation. results...