Testing of nano-insulation materials: Some ideas, some experiences

Brockschmidt, Mario; Pohlmann, Friedhelm; Kempen, Stefan; Gröppel, Peter

doi:10.1109/eic.2011.5996209

Cited by 9 publications

(3 citation statements)

References 2 publications

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“…Similar results for improved corona resistance of epoxy composites featuring inorganic nanofillers such as silica have been reported in the past [26][27][28]. However, in some cases, very high nano-silica contents of 26 wt% and above [27] were needed to attain improvements comparable to those observed in this study, by incorporating 1 wt% of TGIB-POSS in epoxy.…”

Section: Resistance To Corona Dischagesupporting

confidence: 91%

“…However, in some cases, very high nano-silica contents of 26 wt% and above [27] were needed to attain improvements comparable to those observed in this study, by incorporating 1 wt% of TGIB-POSS in epoxy. Thus, it is assumed that by dispersing POSS at a molecular level in epoxy, and because of the formation of covalent bonds Figure 6.…”

Section: Resistance To Corona Dischagesupporting

confidence: 77%

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Nanostructured epoxy/POSS composites: enhanced materials for high voltage insulation applications

Heid

Fréchette

David

2015

IEEE Trans. Dielect. Electr. Insul.

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In this study, the dielectric and thermal properties of nanostructured epoxy/POSS (Polyhedral Oligomeric Silsesquioxanes) composites were investigated, using a reactive Triglycidylisobutyl-POSS (TGIB-POSS) additive from 1 up to 10 wt%. POSS has been successfully dispersed at a molecular level for low content composites, which show a remarkably improved resistance to corona discharges, with up to 60% less eroded sample volume, along with significantly increased dielectric breakdown strengths and thermal conductivities. Epoxy/POSS composites containing 5 wt% and more of the POSS additive exhibit agglomerations, which have been observed by SEM. Furthermore, dielectric spectroscopy revealed additional interfacial loss peaks for such composites containing 5 wt% POSS and more, in addition to the α-and β-peaks known for epoxy.

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Section: Resistance To Corona Dischagesupporting

confidence: 91%

Section: Resistance To Corona Dischagesupporting

confidence: 77%

Nanostructured epoxy/POSS composites: enhanced materials for high voltage insulation applications

Heid

Fréchette

David

2015

IEEE Trans. Dielect. Electr. Insul.

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“…This paper concerns electromagnetic method, and particularly recording of UV and visible radiation. The properties of electromagnetic radiation emitted during the PD depend on the type of insulating material and parameters of the propagation medium and the environment surrounding the area of PD generation, such as pressure, temperature, and humidity [14,15].…”

Section: Metrological Parameters Of the Measuring Systemmentioning

confidence: 99%

Diagnosis of High Voltage Insulators Made of Ceramic Using Spectrophotometry

Frącz

Urbaniec

Turba

et al. 2016

Journal of Spectroscopy

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The paper presents results of comparative analysis of optical signals emitted by partial discharges occurring on three types of high voltage insulators made of porcelain. The research work consisted of diagnosis of the following devices: a long rod insulator, a cap insulator, and an insulating cylinder. For optical signal registration a spectrophotometer was applied. All measurements were performed under laboratory conditions by changing the value of partial discharges generation voltage. For the cylindrical insulator also the distance between high voltage and ground electrodes was subjected for investigation as a factor having influence on partial discharges. The main contribution which resulted from the studies is statement that application of spectrophotometer enables faster recognition of partial discharges, as compared to standard methods.

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