Monitoring power transformers oils deterioration using structured laser illumination planar imaging

Regnima, Guy-Oscar; Bétié, A.; Koffi, Thomas; Bagui, Olivier K.; Fofana, I.; Kouacou, Abaka; Zoueu, Jérémie T.

doi:10.1016/j.measurement.2017.08.019

Cited by 14 publications

(6 citation statements)

References 16 publications

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“…Il reste que les voies qu'offre cet espace sont parsemées de pièges où des individus, en embuscade, sont prêts à couper la route aux autres (Regnima, 2014). La cybercriminalité est de plus en plus présente dans la vie des citoyens.…”

Section: Discussion Et Conclusionunclassified

“…Dans le même sens, Freyssinet, (2010), tout en faisant une photographie de la lutte contre la cybercriminalité, soutient qu'une lutte contre la cybercriminalité passe par une évolution des législations et le développement technologique des mesures de sécurisation. Regnima (2014) tente de montrer un parallèle entre la piraterie en haute mer des siècles passés et la cybercriminalité. Ce parallèle vise à indiquer que ces phénomènes ne sont ni spontanés ni azimut mais obéissent à une rationalité cachée qu'il faut déchiffrer pour rendre les luttes contre ces phénomènes plus efficaces.…”

Section: Introductionunclassified

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Parents Et ‘‘Broutage’’ À Abidjan

Akadjé¹,

Zady²,

Azi³

2017

ESJ

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Numerical revolution has created a new form of delinquency. The cyber-criminality, known as internet «browsing », has become a real criminal activity for some young men. The family, as the first cell for socialization and the melting pot for all social behaviors, seems to be more appropriate to know the parents' perception of «browsing ». The objective of this study is to understand, know, and explain the attitude and the behavior of the parents concerning «browsing ». Through a ground research and the qualitative and quantitative method, the study reveals parents negative perception concerning «browsing » with Yopougon. To reduce the practice of «browsing » , it is compulsory to involve and engage parents in the campaign of sensitization.Keywords: Attitude, «browsing » cyber-criminality, youth, parents, perception RésuméLa révolution numérique a entrainé une nouvelle forme de délinquance. La cybercriminalité, connue sous la forme du « Broutage », est une pratique à laquelle certains jeunes en ont fait une activité criminelle. La famille constituant la première cellule de socialisation et le creuset de toutes conduites sociales, il paraît opportun d'étudier la perception des parents vis-à-vis du « broutage ». Cette étude a donc pour objectif connaître la perception des parents vis-à-vis de la pratique du « broutage ». A travers une enquête de terrain et par la méthode qualitative et quantitative, l'étude révèle la perception négative des parents vis-à-vis de la pratique du « broutage » à Yopougon. Pour réduire la pratique du « broutage », il est nécessaire d'impliquer et d'engager les parents dans les campagnes de sensibilisation.

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Section: Discussion Et Conclusionunclassified

Section: Introductionunclassified

Parents Et ‘‘Broutage’’ À Abidjan

Akadjé¹,

Zady²,

Azi³

2017

ESJ

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“…This technique has already proven its effectiveness in classifying the quality of mineral oils, according to Regnima et al. [9]. It was also used by Bagui et al.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, this structured illumination imaging technique allows selectively encoding the incident photons, then carrying out frequency decoding in the acquired images. This principle makes it possible to overcome the multiple scattering of photons and rigorously determine diffuse media's optical properties [9,15,16].…”

Section: Introductionmentioning

confidence: 99%

Using structured laser illumination planar imaging (SLIPI) as a new technique to monitor the degradation of biodegradable oils in electrical power transformers

Koffi

Kassi

Koné

et al. 2022

IET Generation Trans & Dist

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The aging process of the insulating oils of an electrical transformer is initiated as soon as the transformer is put into service. The quality of these oils must therefore be rigorously evaluated to have reliable and exploitable data for decision‐making. In general, the decision is to continue monitoring, reclaiming/regenerating, or replacing the oil in extreme cases. Thus, early diagnosis of power transformer oils helps prevent potential breakdowns that could considerably impact the electrical energy transmission and distribution network. This research used an imaging technique called SLIPI (Structured Laser Illumination Planar Imaging) to accurately determine the extinction coefficient in different samples of optically dense biodegradable oils (natural and synthetic esters). The variation in the extinction coefficient as a function of the aging of these biodegradable oils under test has been investigated. The results indicate that the SLIPI is reliable as a diagnostic tool for biodegradable oils in power transformers. This technique could therefore be an alternative solution to the conventional monitoring methods.

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“…In a high-voltage power system, power transformers mainly work for electricity generation and transmission with high expense [ 1 ]. It is critical to ensure the safety and reliability of power transformers during the operation for industrial production [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Low Working Temperature of ZnO-MoS2 Nanocomposites for Delaying Aging with Good Acetylene Gas-Sensing Properties

Wang

Chen

et al. 2020

Nanomaterials

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The long-term stability and the extension of the use time of gas sensors are one of the current concerns. Lowering the working temperature is one of the most effective methods to delay aging. In this paper, pure MoS2 and ZnO-MoS2 nanocomposites were successfully prepared by the hydrothermal method, and the morphological characteristics were featured by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Pure MoS2 and ZnO-MoS2 nanocomposites, as a comparison, were used to study the aging characteristic. The sensing properties of the fabricated gas sensors with an optimal molar ratio ZnO-MoS2 (Zn:Mo = 1:2) were recorded, and the results exhibit a high gas-sensing response and good repeatability to the acetylene detection. The working temperature was significantly lower than for pure MoS2. After aging for 40 days, all the gas-sensing response was relatively attenuated, and pure MoS2 exhibits a faster decay rate and lower gas-sensing response than nanocomposites. The better gas-sensing characteristic of nanocomposites after aging was possibly attributed to the active interaction between ZnO and MoS2.

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Monitoring power transformers oils deterioration using structured laser illumination planar imaging

Cited by 14 publications

References 16 publications

Parents Et ‘‘Broutage’’ À Abidjan

Parents Et ‘‘Broutage’’ À Abidjan

Using structured laser illumination planar imaging (SLIPI) as a new technique to monitor the degradation of biodegradable oils in electrical power transformers

Low Working Temperature of ZnO-MoS2 Nanocomposites for Delaying Aging with Good Acetylene Gas-Sensing Properties

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