An online condition assessment and diagnosis system for traction transformers based on dissolved hydrogen analysis

Zhang, Jun; Wu, Guangning; Sheng, Jinlu; Zhou, Lijun; Tong, Laisheng

doi:10.1109/elinsl.2004.1380471

Cited by 2 publications

(2 citation statements)

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“…However, a furan test is not a routine or periodic testing item for power transformer; it is usually employed as a post-diagnostic technique [4,13]. It should be pointed out that it is difficult to derive an exact DP value correlation from the furan content.…”

Section: B4 Others Parametersmentioning

confidence: 99%

“…However, assessing whether a transformer is aged or not based on only one kind of test technology or some kinds of combined test results may be an impossible mission yet, since aging process and intrinsic mechanism are very complicated and still opaque up to now [2][3][4]. A possible optional way may be selecting parameters which are most closely related to insulation aging, then optimizing hierarchy between them and scoring or ranking.…”

Section: Introductionmentioning

confidence: 99%

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Aging Assessment of Power Transformer Using Multi-parameters

Li¹,

Tang²,

Wu³

et al. 2013

ijeei

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Abstract:As the population of transformers in service increases and their operating time extends, much attention has been focused on their availability and reliability. However, insufficient research work concentrates on how to evaluate transformer's aging condition, although huge progress has been made on the techniques of fault diagnosis and condition assessment of transformer in past decades. This paper presents the concept of Aging Index (AI), which is a practical tool that combines the results of routine inspections, and site and laboratory testing to estimate the aging condition of oil-immersed transformers. Further, frequency domain spectroscopy (FDS) as a novel non-destructive testing technique to estimate remained life expectancy is included in aging evaluation system. Moreover, a software system based on transformer's electrical and thermal parameters is developed correspondingly, by using a multi-parameters analytic approach. This system would dedicate to decision-making and replacement planning and has good application prospects.

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Section: B4 Others Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%