Investigation on bubbling phenomenon in oil-paper insulation

Gao, Meng; Zhang, Qiaogen; Ding, Yuqin; Wang, Tonglei; Ni, Heli; Yuan, Weixiong

doi:10.1109/tdei.2017.006471

Cited by 38 publications

(17 citation statements)

References 16 publications

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“…The charged particles and heat produced by ionisation will accelerate the decomposition of the oil in the pores of the pressboard and the decomposition will produce gas composed of CH 4 , C 2 H 2 etc., so that the pores are filled with gas instead of oil. With on-going PD development, the bubbles will burst from within the pressboard, and then become attached to the surface of the pressboard, and further spread to the oil [31,34].…”

Section: Simulation Analysis Of Electric Field In Pd Processmentioning

confidence: 99%

Effect of the oil‐paper insulation aging on partial discharge characteristics in a hemispherical surface model

Wang

Zhang

Jiang

et al. 2019

IET Science, Measurement & Technology

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Section: Simulation Analysis Of Electric Field In Pd Processmentioning

confidence: 99%

Effect of the oil‐paper insulation aging on partial discharge characteristics in a hemispherical surface model

Wang

Zhang

Jiang

et al. 2019

IET Science, Measurement & Technology

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“…For this reason, in order to detect oil aging, the research is carried out at different frequencies. Then, the impedance of the device decreases and, consequently, the gain increases, expressed, as shown earlier (4), as a logarithmic function.…”

Section: Operating Principles Of the New Methodsmentioning

confidence: 63%

“…In addition, moisture content accelerates paper degradation [3]. Besides, it contributes to lower the temperature at which, bubbles form [4]. It is well known that bubbles give rise to partial discharges.…”

Section: Introductionmentioning

confidence: 99%

Transformer Oil Diagnosis Based on a Capacitive Sensor Frequency Response Analysis

et al. 2021

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“…Across systems, however, the temperature dependence on energy input differs, and as the energy inputs are not stated, a comparison between systems is not possible. [12,18,[35][36][37] Przybylek [39] 144.6 125.8 174.0 147.9 Koch & Tenbohlen [18] 156.3 180.7 174.8 207.2 Perkasa [36] 140.0 146.7 161.4 166.0…”

Section: Discussionmentioning

confidence: 99%

“…After 2001, several studies have been carried out to develop further understanding of bubble formation in Kraft paper-mineral oil systems [18,[34][35][36][37]. A thorough comparison of the experimental conditions and foci is found in [38].…”

Section: Later Experimental Workmentioning

confidence: 99%

Analysing the power transformer temperature limitation for avoidance of bubble formation

et al. 2019

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Failure of a transformer is a costly incident which can impact power system operation and result in loss of supply to customers. Transformers can fail through a number of mechanisms, one of which is from the formation of bubbles within the insulation. Currently, the loading guidance is set to avoid certain overload temperatures as high temperature is the main cause of bubbles forming. This paper analyses the limit set within the loading guides, comparing the most commonly cited temperature limit of 140°C with values taken from across the full spectra of available studies in literature. It is concluded that there is sufficient evidence for further investigation into formation of bubbles from transformer insulation as employing a single temperature limit may be inadequate. Use of a single temperature value is unsuitable, given the wide range of potential scenarios that the transformer fleet can present. It has become the go-to rationale that the moisture content of the solid insulation is the key driver for transformer bubbling temperature. This is true, however, it is shown that other factors such as solid insulation aged condition (determined through degree of polymerisation value) and the insulation type are also important considerations.

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Investigation on bubbling phenomenon in oil-paper insulation

Cited by 38 publications

References 16 publications

Effect of the oil‐paper insulation aging on partial discharge characteristics in a hemispherical surface model

Effect of the oil‐paper insulation aging on partial discharge characteristics in a hemispherical surface model

Transformer Oil Diagnosis Based on a Capacitive Sensor Frequency Response Analysis

Analysing the power transformer temperature limitation for avoidance of bubble formation

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