Results 81 to 90 of about 1,761 (214)

Effect of different contents of nano-SiO2 particles on water diffusion behavior in insulating oil

AIP Advances, 2019
As an important component of the internal insulation system in a transformer, insulating oil will gradually age during the long-term operation of the transformer, which will lead to a degradation of its insulation performance.
Qian Wang, Shiling Zhang, Wenxin Tian, Xiong Liu, Dongyuan Du, Chao Tang   +5 more
doaj   +1 more source

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

High Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang, Shuqi Zhang, Yikun Zhao, Yichen Wang, Zongliang Zhang, Jinhua Zhang   +5 more
wiley   +1 more source

Dynamic Behaviour of Bubbles in Oil Under Electrothermal Ageing

High Voltage, EarlyView.
ABSTRACT During long‐term operation of converter transformers, the internal oil–pressboard insulation undergoes irreversible degradation. Partial discharge in the weakened insulation will cause the formation of a large number of bubbles in the insulating oil.
Hongbin Wu, Zhaoyang Kang, Ze Li, Zhongyu Zhao, Shuqi Li, Fuqiang Ren, Hongshun Liu, Qingquan Li   +7 more
wiley   +1 more source

Development of Mixed Insulation Oil as Alternative Liquid Dielectric: A Review

CSEE Journal of Power and Energy Systems
Use of traditional mineral oil (MO) as a liquid insulation in transformers has spanned more than 130 years. However, MO has poor heat resistance, a low ignition point, and is a non-renewable resource, which does not meet development requirements for high-
Jian Hao, Jingwen Zhang, Wenyu Ye, Ruijing Liao, Lijun Yang   +4 more
doaj   +1 more source

Study on Impurity Particle Detection in Transformer Oil Based on Microflow Imaging Method

High Voltage, EarlyView.
ABSTRACT The concentration of particles in transformer oil has a significant influence on its electrical performance, making oil cleanliness a critical parameter in the operation and maintenance of power transformers. However, the light obstruction (LO) method recommended by current standards has inherent limitations, including low sensitivity to ...
Chen Chen, Lijun Yang, Wu Zhao, Zhengyu Chen, Xinxi Yu, Yong Li, Ruijin Liao   +6 more
wiley   +1 more source

Electrifying the Future: Second- and Third-Generation Derived Oils for Transformers

Energies
The reliability of power transmission and distribution depends on the proper functioning of power transformers, which use conventional mineral oil as an insulating fluid.
Arputhasamy Joseph Amalanathan, Susaimanickam Anto, Maciej Zdanowski   +2 more
doaj   +1 more source

Deterioration Law of Mechanical Properties of Insulation Pressboard Under Multifield Coupled Ageing

High Voltage, EarlyView.
ABSTRACT Converter transformers can experience progressive deterioration of their oil–pressboard insulation under elevated temperature, combined AC–DC electrical stress and persistent mechanical vibration. This study investigates how mechanical vibration affects the mechanical properties of insulation pressboard and clarifies the associated microscopic
Jiayi Chen, Guan Wang, Zihao Li, Zhongyu Zhao, Kuo Yan, Hongshun Liu   +5 more
wiley   +1 more source

Studi Penggunaan Metil Ester Minyak Sawit sebagai Minyak Isolasi Peralatan Listrik

Jurnal Nasional Teknik Elektro, 2014
This paper discusses experimental results on some parameters of palm methyl ester as insulating oil. Destillations are firstly made to obtained the composition of oil that provide the optimal compromise among measured parameters.
Abdul Rajab, Andi Pawawoi, Aminudin Sulaeman, Didin Mujahidin   +3 more
doaj  

The Missing Link in Australia's Critical Minerals Strategy: The Case for Establishing a Sovereign Resources Fund

Economic Papers: A journal of applied economics and policy, EarlyView.
Australia possesses the highest per capita endowment of critical minerals and other natural resources in the world. These minerals are essential for decarbonising the global economy. Australia stands out for having among the most sustainable and responsible mining practices globally.
Russell Smyth, Joaquin Vespignani
wiley   +1 more source

Advances in Floating Solar Desalination Systems

Water and Environment Journal, EarlyView.
This review critically classifies floating solar desalination systems into five main categories and compares their thermal performance, productivity and technological limitations. Membrane‐based and multieffect systems showed the highest efficiencies, while traditional designs remain limited by heat losses and scaling.
Daiane Silva de Abreu Benedito, Kênia Kelly Freitas Sarmento, Vanessa Rosales Conserva, Keila Machado de Medeiros, Carlos Antônio Pereira de Lima   +4 more
wiley   +1 more source