Results 41 to 50 of about 24,218,867 (287)

Recognition of Aging Stage of Oil–Paper Insulation Based on Surface Enhanced Raman Scattering and Kernel Entropy Component Analysis

IEEE Access, 2019
This study explores the method of applying surface enhanced Raman scattering (SERS) in diagnosing the aging stage of oil-paper insulation equipment in the power system, which provides access to the on-line mornitoring of electrical equipment.
Dingkun Yang, Weigen Chen, Weiran Zhou, Jingxin Zou, Zhou Fan   +4 more
doaj   +1 more source

Multidimensional Heat‐Path Engineering in Thermal Interface Materials for High‐Performance Electronics

Advanced Materials Technologies, EarlyView.
This review presents multidimensional heat‐path engineering for thermal interface materials, showing how internal heat transport, interfacial contact and bondline formation, and processing‐defined pathway architectures together determine bonded‐joint thermal performance.
Jinsoo Na, Jaeho Seo, Sungwoo Yang, Wonjin Lee, James Sangmin Choo, Sangjae Kim, Sanghyun Park, Juhyuk Park   +7 more
wiley   +1 more source

Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer

IEEE Access, 2023
Recently, Polarization Depolarization current (PDC) measurement is widely accepted time domain spectroscopy-based method for assessing the insulation condition. Various performance parameters like Dissipation factor (%tan $\delta $ ), Paper Moisture (%pm), Dielectric Adsorption Ratio (DAR), Polarization index (PI) etc. can be estimated by
Alok Kumar, Deepak Mishra 0006, Arijit Baral   +2 more
openaire   +3 more sources

Linking Polyelectrolyte Modification and Enzyme‐Catalyzed Phenolic Acid Functionalization of Cellulose Fiber for Functional Foams

Advanced Materials Technologies, EarlyView.
Cellulose fibers functionalized using cationic poly(Dimethyldiallylammonium chloride) (polyDADMAC) and laccase‐mediated ferulic acid system are processed into foams using different surfactants (Anionic, cationic, and non‐ionic). Fiber–surfactant interactions influence foam stabilization and porous structure formation during convective drying, producing
Abirami Senthil, Sara Wallstén, Paul Christakopoulos, Ulrika Rova, Io Antonopoulou   +4 more
wiley   +1 more source

Harnessing Phase Separation for the Development of High‐Performance Hydrogels

Advanced Science, EarlyView.
ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao, Yiming Ma, Baihao Shao, Molly M. Stevens   +3 more
wiley   +1 more source

Time-Dependent Electric Field Distribution in Layered Paper-Oil Insulation [PDF]

, 2019
Layered paper–oil insulation is used in several types of HVDC equipment. In order to better understand breakdown mechanisms and optimize the design, it is important to understand the electric field distribution in the insulation.
Håkonseth, Gunnar, Ildstad, Erling
core   +2 more sources

Assessing Ageing Condition of Mineral Oil-Paper Insulation by Polarization/Depolarization Current

, 2011
Accurately assessing the ageing status of oil-paper insulation in transformer is essential and important. Polarization and Depolarization Current (PDC) technique is effective in assessing the condition of oil-paper insulation system.
Liao, R, Hao, J, Yang, L, Ma, Z, Chen, G
core   +1 more source

Wafer‐Scale Dendritic Nanoporous Platinum Films for Neural Electrodes

Advanced Science, EarlyView.
Wafer‐scale dendritic nanoporous platinum films with intrinsic nanoscale porosity are synthesized by suraface‐confined wet chemistry and transferred onto flexible substrates to create tissue‐conformal neural electrodes. The ultrathin films combine mechanical flexibility with electrochemical stability, enabling low‐impedance, high‐capacitance interfaces
Kyeongbin Kang, Joosung Oh, Soumen Dutta, Sun Woo Jang, Byeong Su Gu, Woosung Cho, Mingyu Kwak, Sunguk Hong, Seongjae Lee, Hyo Kyoung Jeon, Juwan Han, Keehoon Kim, Sung‐Min Park, Unyong Jeong, In Su Lee   +14 more
wiley   +1 more source

Effect of thermally aged oil on space charge dynamics in oil/paper insulation system

, 2011
The formation of space charge in oil/paper insulation system can lead to material degradation in the high electrical field region and affect system reliability.
Hao, Jian, Liao, Ruijin, Chen, George
core   +1 more source

AC/DC Superimposed Breakdown Characteristics and Electric Field Simulation Analysis of Oil-Paper Insulation in Converter Transformers

EAI Endorsed Transactions on Energy Web
This study investigates the electric field distribution and breakdown characteristics of oil-paper insulation in a 500 kV converter transformer under AC/DC superimposed voltages. The electric field distribution within the winding end insulation structure
Xiaofan Huang, Jun Yan, Aiqiang Pan, Yufan Zhang   +3 more
doaj   +1 more source