Results 1 to 10 of about 6,433 (219)

Study on Fretting Wear Mechanism between Transformer Oil - Immersed Insulation Papers [PDF]

open access: yesCailiao Baohu, 2022
In order to analyze the influence of transformer vibration on the winding oil - immersed insulation paper, the friction and wear tester UMT - 2 was used to test the such paper based on the damage phenomenon of transformer winding oil - immersed ...
SHI Xiao - wan, YAN Ming - yin, ZHAO Jing
doaj   +1 more source

Improved NSGA Multi-objective Optimization Based Oil-Paper Insulation Status Assessment Method

open access: yesZhongguo dianli, 2023
Oil-paper is an important component of oil-immersed power transformers, and its insulation reliability is crucial for maintaining transformer stable operation. In this paper, FDS tests on aged and damp oil-paper insulation samples are conducted, so as to
Peng ZHANG   +5 more
doaj   +1 more source

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

open access: yesIET 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   +5 more
doaj   +1 more source

Evaluation Method of Aging State of Oil-Paper Insulation Based on Isothermal Decay Current

open access: yesJournal of Harbin University of Science and Technology, 2023
The stable operation of the transformer is an important guarantee for maintaining the safety of the power grid. It is very important to accurately assess the insulation state of oil-paper insulation of transformer.
LIUHeqian   +6 more
doaj   +1 more source

Research on influence factors of micro-bubbles generation mechanism in oil paper insulation of 1000 kV transformers

open access: yesEnergy Reports, 2022
The 1000 kV transformer is one of the most important equipment in ultra high voltage (UHV) power grid, and its service life largely depends on the state of its oil paper insulation system. Especially when micro-bubbles appear in oil paper insulation, the
Zhaoliang Gu   +6 more
doaj   +1 more source

Power transformer oil–paper insulation degradation modelling and prediction method based on functional principal component analysis

open access: yesIET Science, Measurement & Technology, 2022
This study is for the case where the available data of power transformer oil–paper insulation is limited to a small amount furfural data, to solve the problems in oil–paper insulation degradation modelling, such as few samples available, unknown function
Yuehan Qu   +4 more
doaj   +1 more source

Influences of Corrosive Sulfur on Copper Wires and Oil-Paper Insulation in Transformers

open access: yesEnergies, 2011
Oil-impregnated paper is widely used in power transmission equipment as a reliable insulation. However, copper sulphide deposition on oil-paper insulation can lead to insulation failures in power transformers. This paper presents the influences of copper
Jian Li   +3 more
doaj   +1 more source

Quantitative prediction of aging state of oil-paper insulation based on Raman spectroscopy

open access: yesAIP Advances, 2021
Accurate monitoring of insulation aging of oil-paper insulation power equipment such as oil-immersed transformers is a key and difficult point in the field of high voltage research.
Xingang Chen   +5 more
doaj   +1 more source

Comparison of AC breakdown characteristics on insulation paper (pressboard) immersed by three-element mixed insulation oil and mineral oil

open access: yesHigh Voltage, 2019
Insulation oil is an important dielectric in power devices, and many studies on mixed insulation oil have been conducted in recent years to improve the performance of insulation oils.
Dawei Feng   +5 more
doaj   +1 more source

Frequency Domain Diagnostics of Transformer Insulation

open access: yesПриборы и методы измерений, 2019
The first part of paper deals with the base information about diagnostics of power transformers. In this part are presented differently insulating methods, for example method of recovery voltage method, method of polarization and depolarization currents ...
M. Gutten   +6 more
doaj   +1 more source

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