Results 1 to 10 of about 68,301 (120)

Dielectric Properties and 3D-Printing Feasibility of UV-Curable Resin/Micron Ceramic Filler Composites

open access: yesAdvances in Polymer Technology, 2022
To prepare high-permittivity composite materials for dielectrically functional gradient materials (d-FGMs) by the stereolithographic 3D-printing technique, three ceramic powders (i.e., alumina, barium titanate, and strontium titanate) are selected as ...
Yijia Fu   +5 more
doaj   +1 more source

Multicomponent SF6 decomposition product sensing with a gas-sensing microchip

open access: yesMicrosystems & Nanoengineering, 2021
A difficult issue restricting the development of gas sensors is multicomponent recognition. Herein, a gas-sensing (GS) microchip loaded with three gas-sensitive materials was fabricated via a micromachining technique.
Jifeng Chu   +7 more
doaj   +1 more source

Hybrid piezo/triboelectric nanogenerator for stray magnetic energy harvesting and self‐powered sensing applications

open access: yesHigh Voltage, 2021
Stray magnetic fields with a fixed frequency of 50/60 Hz are ubiquitous in buildings, factories, and power system equipment. Researchers are increasingly focusing on harvesting electrical energy from stray magnetic fields to provide sustainable energy ...
Aijun Yang   +9 more
doaj   +1 more source

Effect of Ni2O3 Doping on the Electrical Properties and Intrinsic Defect Concentration of ZnO Varistor Ceramics [PDF]

open access: yesE3S Web of Conferences, 2020
With the development of high voltage transmission, there is an urgent need to develop ZnO varistor ceramics with high anti-aging properties. The key is to manipulate the intrinsic defect concentration of ZnO varistor ceramics precisely.
Guo Qirui   +4 more
doaj   +1 more source

Electrical field distribution of 35 KV Igla under polluted and ice-covered situation at power frequency

open access: yesThe Journal of Engineering, 2019
Lightning striking on power system may lead to severe accident and huge losses, which is the reason why line arresters are needed. During operation, the electrical field concentration in line arrester may lead to ablation and accelerated aging of ...
Guo Jie   +4 more
doaj   +1 more source

Characteristics of the Partial Discharge in the Development of Conductive Particle-Initiated Flashover of a GIS Insulator

open access: yesEnergies, 2020
Conductive particles are one of the most important defects which can greatly degrade the performance of gas-insulated metal-enclosed switchgear (GIS). Many efforts have been made to clarify the influence on the withstand voltage, understand the flashover
Junping Zhao   +4 more
doaj   +1 more source

Design and short‐circuit current breaking test verification of a 72.5 kV single‐break fast vacuum circuit breaker

open access: yesIET Generation, Transmission & Distribution, 2022
Fast clearing of a short‐circuit fault is vital to increase the transmission capacity of power grid transmission lines and improve the transient stability of a power system.
Chen Guan   +8 more
doaj   +1 more source

Polypropylene nanocomposite for power equipment: a review

open access: yesIET Nanodielectrics, 2018
Polypropylene (PP), with high breakdown strength, low dissipation and good processibility, is one of the most widely used dielectric material for power equipment, especially in power capacitors and power cables.
Lu Cheng   +7 more
doaj   +1 more source

Capacitive making of double‐break vacuum circuit breaker: Transverse magnetic field contacts are superior to axial magnetic field contacts

open access: yesIET Generation, Transmission & Distribution, 2022
Previous studies mainly focused on the behaviours of single‐break vacuum circuit breakers (VCBs) in switching capacitor banks. The prestrike characteristics of double‐break VCBs subjected to axial magnetic fields (AMFs) and transverse magnetic fields ...
Yun Geng   +6 more
doaj   +1 more source

Reinforcement influence on non-autoclave foam cement concrete strength characteristics/Armavimo įtaka putų cementbetonio stiprumo charakteristikoms

open access: yesJournal of Civil Engineering and Management, 2000
The volume and surface reinforcement treatment influence on 900–1000 kg/m3 density non-autoclave foam cement concrete strength characteristics are discussed in this paper. Carbon fibres of a length up to 5 mm and diameter of 4, 6-7.7 mkm were used for
Marijonas Sinica   +3 more
doaj   +1 more source

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