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Analytical methods for assessing paper degradation In transformers [PDF]
, 2006 Power transformers are essential equipments for distributing electricity. However, maintenance of these equipments is necessary to ensure long working life and to avoid catastrophic incidents.
Christofidis, Stavros
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Energy 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
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IET 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
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Quantitative prediction of aging state of oil-paper insulation based on Raman spectroscopy
AIP 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
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Influences of Corrosive Sulfur on Copper Wires and Oil-Paper Insulation in Transformers
Energies, 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
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Space charge characteristics of multi-layer oil-paper insulation under different DC voltages [PDF]
, 2009 In this paper, space charge in oil-paper insulation system has been investigated using the pulsed electroacoustic (PEA) technique. A series of measurements were carried out when the insulation system was subjected to different applied voltages.
M Fu +7 more
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High 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
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Frequency Domain Diagnostics of Transformer Insulation
Приборы 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
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EFFECT OF THERMAL AGEING ON THE OIL-PAPER INSULATION
Acta Electrotechnica et Informatica, 2014 Insulation system is one of the most important part of electrical devices. This insulation system is usually composed by solid part and liquid part. Oil impregnated insulation paper is used in transformers for many years. There are a lot of factors which have significant influence on the insulation system during the life time of electrical devices ...
Lukáš LISOŇ +2 more
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High Voltage, 2021 This study extensively investigated the ageing characteristics and lifetime model of oil–paper insulation for oil‐immersed paper condenser bushing. The accelerated thermal and electrothermal ageing experiments of oil‐immersed paper condenser bushing were
Sihang Gao, Lijun Yang, Tingjing Ke
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