Results 31 to 40 of about 799 (256)

Research on the variation of dielectric properties of oil‐paper insulation for power equipment over a wide temperature range

High Voltage
The main part of oil‐immersed power equipment is oil‐paper insulation. At lower ambient temperatures, transformer oil will become viscous. As a result, compared to those at room temperature or operating temperature, the frequency domain dielectric ...
Mingze Zhang, Muhe Yu, Wen Zhou, Yilin Liang, Shengjie Lei, Yunbo Shi, Limin Qu   +6 more
doaj   +1 more source

A two-dimensional transient fluid-thermal coupling method for temperature rising calculation of transformer winding based on finite element method

AIP Advances, 2020
In order to study the characteristics of the temperature variation in oil-immersed power transformer windings during operation, a two-dimensional transient fluid-thermal coupling calculation method for the transient temperature rising of transformer ...
Gang Liu, Shichang Rong, Weige Wu, Xiaohan Wang, Lin Li   +4 more
doaj   +1 more source

Method for assessing unevenness of cellulose insulation layers aging of power transformers winding

Electrical engineering & Electromechanics, 2022
Introduction. Improving the methods of estimating the insulation aging of the oil-immersed power transformer windings is an urgent task for transformer condition monitoring systems.
M. O. Poliakov, V. V. Vasylevskyi
doaj   +1 more source

Reliability Analysis and Overload Capability Assessment of Oil-Immersed Power Transformers [PDF]

Energies, 2016
Smart grids have been constructed so as to guarantee the security and stability of the power grid in recent years. Power transformers are a most vital component in the complicated smart grid network. Any transformer failure can cause damage of the whole power system, within which the failures caused by overloading cannot be ignored. This research gives
Chen Wang, Jie Wu, Jianzhou Wang, Weigang Zhao   +3 more
openaire   +2 more sources

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

A review on the research progress and future development of nano‐modified cellulose insulation paper

IET Nanodielectrics, 2022
Focussing on the insulating material of power transformer—cellulose insulation paper, this paper first introduces the basic characteristics and engineering application background of insulation paper.
Chao Tang, Rui Chen, Jinzhu Zhang, Xiao Peng, Binghao Chen, Liusheng Zhang   +5 more
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source

Analysis of Factors Affecting Temperature Rise of Oil-immersed Power Transformer

Journal of Physics: Conference Series, 2020
Abstract The key factors that affect the operation state of power transformer include thermal problem and insulation problem. It is of great significance to pay attention to the factors affecting the temperature rise characteristics of transformer to ensure its stable operation. The temperature rise characteristic model of transformer is
Cheng-chao Sun, Chi Xiao, Jun Hou, Liang Kong, Jian Ye, Wen-jian Yu   +5 more
openaire   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture

Advanced Functional Materials, EarlyView.
This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li, Zhangzheng Xiao, Zheng Yan, Adnan Raza Altaf, Qun Song, Dingding Yao, Afshan Sohail, Yixin Wang, Wenxiu Ma, Shanjun Li, Yaohui Chen, Peiwen Liu, Kai Zhang   +12 more
wiley   +1 more source