Results 71 to 80 of about 6,484 (263)

A New Technique to Estimate the Degree of Polymerization of Insulation Paper Using Multiple Aging Parameters of Transformer Oil

IEEE Access, 2019
Transformer insulation paper is a key indicator for transformer remaining operational life. Paper decomposition is evaluated using the degree of polymerization (DP) which calls for samples of insulation paper from operating transformers. Since collecting
Shijun Li, Zhao Ge, Ahmed Abu-Siada, Liuqing Yang, Shengtao Li, Kiyoshi Wakimoto   +5 more
doaj   +1 more source

Do Commodity Prices and Energy Markets Drive Asymmetric Volatility in Biodiversity Finance?

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines symmetric and asymmetric volatility spillovers among biodiversity finance, commodity prices, and energy markets using daily data from 2019 to 2025. We apply the Diebold–Yilmaz time–domain connectedness model, Baruník–Křehlík frequency–domain decomposition, and an asymmetric spillover framework.
Ijaz Younis, Maqsood Ahmad, Himani Gupta, Kun Su, Waheed Ullah Shah   +4 more
wiley   +1 more source

Evaluation of paper insulation of power transformers based on the content of 2-furfural in mineral oil corrected to a reference temperature of 20ºc [PDF]

Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2019
The reliability of power transformers operation largely depends on the insulation system condition, especially on the condition of paper insulation.
Vasović Valentina, Mihajlović Draginja, Janković Jelena, Lukić Jelena   +3 more
doaj  

Investigation of ageing process in paper-oil insulation with visible range

Известия высших учебных заведений: Проблемы энергетики, 2017
The aging of paper-oil insulation is determined by changing the value of its degree of polymerization. Used today ways to assess the degree of polymerization of paper-oil insulation of high voltage equipment has the following disadvantages: labor input ...
V. K. Kozlov, A. K. Sabitov, B. R. Nizamutdinov   +2 more
doaj   +1 more source

Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective

Carbon Energy, EarlyView.
ABSTRACT Graphene has garnered significant attention as a promising material with great potential for contributing to sustainable energy initiatives, such as RE100 (100% renewable energy initiative) and CF100 (100% carbon‐free initiative). This review aims to explore the potential of graphene for advancing renewable energy applications by highlighting
Niraj Kumar, Seul‐Yi Lee, Roop L. Mahajan, Soo‐Jin Park   +3 more
wiley   +1 more source

Energy‐Efficient Induction Carbonization: Tailoring Pore Structures in Hard Carbon Anodes Toward Enhanced Electrochemical Performance

Carbon Energy, EarlyView.
ABSTRACT Hard carbon (HC) is currently the predominant anode material for sodium‐ion batteries; however, its practical application is still limited by insufficient initial Coulombic efficiency (ICE) and plateau capacity. Meanwhile, conventional HC production relies on energy‐intensive carbonization processes with considerable carbon emissions. Here, an
Yanghao Jin, Mengwei Sun, Ziyi Shi, Dumindu Pasan Siriwardena Thanaweera Achchige, Huiting Liu, Hanmin Yang, Yaprak Subasi, Ritambhara Gond, Yazhe Wang, Habtom Desta Asfaw, Yun Tian, Manuel Baumann, Marcel Weil, YongGang Yao, Haiping Yang, Reza Younesi, Pär G. Jönsson, Weihong Yang, Tong Han   +18 more
wiley   +1 more source

Environment Friendly Sustainable End‐Of‐Life Solutions for Plastic Components in Indian Automotive Industries

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Growing concerns about the environmental and social consequences of plastics around the world, manufacturing industries are associated with business are focusing on sustainable end‐of‐life options‐based solutions which aim at increasing the product life cycle.
Sivakumar Kirupanandan, Deepak Mathivathanan, Jayakrishna Kandasamy, Michele Mosca   +3 more
wiley   +1 more source

Crystallization of Cathode Active Material Precursors from Tartaric Acid Solution

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
This work investigates a novel approach for closing the gap between recycling and production of lithium‐ion battery cathode material. The new concept is based on antisolvent crystallization of metal carboxylates, which can be directly used as precursors in production of cathode material.
Chunyan Ma, Mona Mohamoud, Tiaan Punt, Jinlong Li, Michael Svärd, Kerstin Forsberg   +5 more
wiley   +1 more source

Research on Nonlinear Variations of Frequency Domain Dielectric Characteristics of Typical Oil-paper Insulation Model

Journal of Harbin University of Science and Technology
Oil-paper insulation is the main insulation system for oil immersed power equipment. Accurately evaluating its aging status is crucial for the power grid operation and maintenance department to formulate maintenance strategies.
XU Minhu, ZHANG Jian, YANG Hongda, ZHANG Peng, LEI Shengjie, MA Chenyang, WANG Bingjie, ZHANG Mingze   +7 more
doaj   +1 more source

Space Charge Behavior in Paper Insulation Induced by Copper Sulfide in High-Voltage Direct Current Power Transformers

Energies, 2015
The main insulation system in high-voltage direct current (HVDC) transformer consists of oil-paper insulation. The formation of space charge in insulation paper is crucial for the dielectric strength.
Ruijin Liao, Ende Hu, Lijun Yang, Yuan Yuan   +3 more
doaj   +1 more source