Results 91 to 100 of about 75,526 (309)

Detection Technique of Partial Discharges at Impulse Voltage with Appropriate Filter Settings for Signal Separation

Energies, 2019
Due to the increased utilization of electric converters feeding rotating high voltage motors, their insulation is subject to transient impulse and high frequency oscillating voltages.
Karsten Backhaus, Lena Elspaß, Konstantin Pasche   +2 more
doaj   +1 more source

Separation of sources in radiofrequency measurements of partial discharges using time-power ratio maps.

ISA transactions, 2015
Partial discharges measurement is one of the most useful tools for condition monitoring of high-voltage (HV) equipment. These phenomena can be measured on-line in radiofrequency (RF) with sensors such as the Vivaldi antenna, used in this paper, which ...
Ricardo Albarracín, Guillermo Robles, J. Martínez-Tarifa, J. Ardila-Rey   +3 more
semanticscholar   +1 more source

Synergistic Enhancement of Electrical‐Thermal Properties in KH550/G‐POSS Functionalized BN/Epoxy Composites for High‐Frequency Transformer Insulation

Advanced Science, EarlyView.
A BN@G‐POSS/EP nanocomposite is developed for high‐frequency transformer insulation in power electronic transformers. Through synergistic interface engineering, it simultaneously enhances thermal conductivity, reduces viscosity, and improves electro‐thermal stability.
Jun Jiang, Shaojie Luo, Dezhi Cui, Zeya Huang, Shuai Jiang, Renli Fu, Yuan Wang   +6 more
wiley   +1 more source

Partial discharge and interference discrimination in gas-insulated systems using electric and magnetic sensors

International Journal of Electrical Power & Energy Systems
The correct identification of partial discharges (PDs) is instrumental for the maintenance plan in gas-insulated systems (GIS). However, onsite PD measurements are difficult, especially in HVDC systems, where partial discharges can be confused with ...
Christian Mier, Armando Rodrigo Mor, Tianming Luo, Peter Vaessen   +3 more
doaj   +1 more source

Modelling of partial discharge characteristics in electrical tree channels: Estimating the PD inception and extinction voltages

IEEE Transactions on Dielectrics and Electrical Insulation, 2018
Partial discharge (PD) characteristics are inherently linked to associated electrical tree growth characteristics. This paper employs both phase-resolved patterns and pulse-sequence analysis (PSA) to study PDs in a short branch-tree grown from a metallic needle tip.
Lv, Zepeng, Rowland, Simon; id_orcid 0000-0003-0811-1509, Chen, Siyuan, Zheng, Hualong, Wu, Kai   +4 more
openaire   +3 more sources

Finite-difference time-domain simulation of partial discharges in a gas insulated switchgear

, 2016
It is important to estimate the current magnitude and charge amount of a partial discharge (PD) in a gas-insulated switchgear (GIS). In this study, electromagnetic fields generated by a PD in an 84 kV-class three-phase GIS for testing have been measured ...
Hiroki Tanaka, Daiki Tanahashi, Y. Baba, N. Nagaoka, N. Okada, Hideto Ohki, Takeuchi Masayasu   +6 more
semanticscholar   +1 more source

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

Advanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su, Yanda Zhu, Hao Peng, Manman Li, Xuzihan Zhang, Meixiao Wu, Siyuan Zhang, Yuhan Zeng, Jiwen Liao, Ming Luo, Hetaishan Huang, Yutong Wang, Sean Li, Wenxian Li   +13 more
wiley   +1 more source

Evaluation of Partial Discharge Separation Techniques

IEEE Access
Partial discharge (PD) analysis is widely recognized as a valuable technique for detecting faults and evaluating the condition of electrical system assets. However, its practical application poses significant challenges.
Joao Victor Jales Da Silva Melo, George Rossany Soares De Lira, Edson Guedes Da Costa, Pablo Bezerra Vilar, Antonio Francisco Leite Neto, Igor Monteiro Abreu Dos Santos, Hebert Santos Crispim, Fernando Do Nascimento Madia   +7 more
doaj   +1 more source

Allosteric Inhibition of Polycomb Repressive Complex 2 by an EZH2‐Selective Small Molecule Inhibitor

Advanced Science, EarlyView.
The study characterizes C36, a highly selective EZH2/PRC2 inhibitor that acts via a novel allosteric mechanism. Unlike previous inhibitors, C36 inhibits EZH2/PRC2 by disrupting the allosteric communication between EZH2 and EED in a SAM‐noncompetitive manner.
Ting Cao, Dongdong Liu, Haishan Gao, Chenyang Qin, Wen Zhang, Ziyun Lu, Dongxia Tan, Yuxiu Qu, Yusong Liu, Zhiran Zou, Hongtao Yu, Wei Qi   +11 more
wiley   +1 more source

All‐Flex Plasma Patch for In Vivo Delivery of Reactive Species

Advanced Science, EarlyView.
A fully flexible plasma patch enables stable, conformal treatment on complex biological surfaces and enhances transdermal delivery of reactive species. This platform achieves significant tumor suppression in vivo and reveals coordinated regulation of calcium signaling, metabolism, and programmed cell death, providing a promising strategy for safe and ...
Luxiang Zhao, Abulaihaiti Tuergong, Hanshu Yang, Shuang Xue, An Yan, Mingzhen Wang, Weilong Song, Wenzhe Si, Ruixue Wang   +8 more
wiley   +1 more source