Quantifying the Effect of Catalysts on the Lifetime of Transformer Oil

Polanský, Radek; Hahn, Pavel; Kadlec, Petr; Moravcová, Daniela; Prosr, Pavel

doi:10.3390/app10041309

Cited by 14 publications

(3 citation statements)

References 35 publications

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“…The insulation system is the most temperature-sensitive component of a transformer. For this reason, according to many authors, the lifetime of a transformer is the same as the lifetime of its insulation system [25][26][27].…”

Section: Effects Of Increased Temperature In the Transformermentioning

confidence: 99%

The Tools and Parameters to Consider in the Design of Power Transformer Cooling Systems

Goscinski,

Nadolny,

Nawrowski

et al. 2023

Energies

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Transformers are the most important elements of electric power systems. Many conditions must be met for power transformers to work properly. One of them is a low operating temperature. This condition will be met if the transformer cooling system is properly designed. One of the components of a cooling system is insulating liquid. The heat transfer coefficient α of liquid determines its ability to cool the transformer. The higher its value, the more effectively the liquid transfers heat to the environment. This article describes the influence of the position of the heat source, which is usually in the windings of the transformer, on the coefficient α value of the insulating liquid. The vertical and horizontal positions of the heat source were analyzed. The coefficient α was analyzed at different points of the heat source. The tests were carried out for mineral oil and various esters. Heat transfer coefficient measurements were carried out for various surface heat loads of the heat source. It has been proven that, in the case of a horizontal heat source, the coefficient α has a value several dozen percent higher than in the case of a vertical source. It has been proven that the coefficient α has different values in different places of the heat source. Regardless of the location, the highest value of the coefficient α occurred in the lower part of the heat source.

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Section: Effects Of Increased Temperature In the Transformermentioning

confidence: 99%

The Tools and Parameters to Consider in the Design of Power Transformer Cooling Systems

Goscinski,

Nadolny,

Nawrowski

et al. 2023

Energies

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“…Conductor gas-sensitive sensors are influenced by the combination of morphological structure and electron motion, e.g., crystal structure, particle size, dimensionality, morphology, specific surface area, etc. [10][11][12]. Palladium (Pd) catalysts have been chosen as the preferred material for the preparation of thin sensor films or dopants to modulate their active surfaces, and much work has been done to develop sensing materials with good electrical response to detect target gases or adsorbents with strong adsorption capacity to remove these impurities.…”

Section: Introductionmentioning

confidence: 99%

Pd/C-Based Sensor for Gas Sensing in Transformer Oil

et al. 2023

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The detection of dissolved gas in transformer oil is of vital importance to diagnose the early fault and monitor the security and stability of power systems. In this work, distinct Pd/C, Pd/C-R and Pd/NC were synthesized and evaluated. XRD and XPS characterizations show that both Pd0 and PdII are presented over the surface of carbon host for Pd/C, while poor gas-sensitive properties were presented for Pd0 in H2-reduced Pd/C-R sample. High content of cationic PdII species are synthesized by nitrogen doping of the carbon surface for Pd/NC. The experimental results showed that the gas-sensitive performances of H2/CO/C2H2 gases is facilitated over the developed Pd/NC material. This study can provide reference for the rapid detection and fault diagnosis of faulty gases in transformers.

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“…• PCBs Analysis; Despite the prohibition of PCBs production all over the world, the lubrication storage locations and sites accumulated large quantities in transformers and capacitors [1,23,24].…”

Section: Introductionmentioning

confidence: 99%

Transformer Oil Generation and Regeneration Techniques Based on Recent Developments (A Review)

Hassanpour

2021

Int. J. Petrol. Technol.

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With regard to the wide application of Transformer Oils (TO) as an energy stream on an industrial scale with fast progress towards green TO generation and regeneration technologies, the current review takes into investigation the TO generation industries based on the screening step of industrial projects by Iranian evaluator teams of in-charge organizations. The present review encompassed the TO generation and regeneration technologies from traditional, typical, and recently developed practices in this regard. The technologies extended to introduce green TO generation practices in connection with fossil fuel resources. By the way, a comparison has been done based on technologies posed for TO with the used motor oil reprocessing techniques and used lubricant oil regeneration technologies. To sum up, the current review comprised basic knowledge to select the best technologies for decision-making models in future industrial developments. The prominent achievement of the current review can be mentioned to the aggregation of industrial data for further processing in decision-making theory, criteria, and alternatives selections.

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Quantifying the Effect of Catalysts on the Lifetime of Transformer Oil

Cited by 14 publications

References 35 publications

The Tools and Parameters to Consider in the Design of Power Transformer Cooling Systems

The Tools and Parameters to Consider in the Design of Power Transformer Cooling Systems

Pd/C-Based Sensor for Gas Sensing in Transformer Oil

Transformer Oil Generation and Regeneration Techniques Based on Recent Developments (A Review)

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