2007 IEEE International Conference on Solid Dielectrics 2007
DOI: 10.1109/icsd.2007.4290739
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Abstract: Three areas of considerable progress are identified in the area of polymeric insulation since the mid 1990s (i.e. since the inception of the Eric O. Forster Memorial Lectures): the understanding of ageing, the measurement of space charge, and the development of nanodielectrics. The paper proposes a typology to distinguish and define electrical ageing, degradation and breakdown. With reference to the principal theories of thermo-ageing, it is concluded that there is little direct evidence for ageing even though… Show more

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Cited by 56 publications
(40 citation statements)
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References 74 publications
(71 reference statements)
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“…Nanodielectrics, defined as composites containing nanofillers (i.e., fillers with at least one dimension less than 100 nm) embedded in a dielectric matrix (e.g., a polymer), have great potential for serving this purpose as they can present superior dielectric properties compared to conventional dielectrics and dielectric microcomposites [4][5][6][7][8][9][10][11]. XLPE-based nanodielectrics containing silica nanoparticles can present improvements in several key dielectric properties over neat XLPE, such as increased dielectric breakdown strength, enhanced voltage endurance, enhanced partial-discharge resistance and reduced space charge accumulation [12][13][14][15][16].…”
Section: Introductionmentioning
confidence: 99%
“…Nanodielectrics, defined as composites containing nanofillers (i.e., fillers with at least one dimension less than 100 nm) embedded in a dielectric matrix (e.g., a polymer), have great potential for serving this purpose as they can present superior dielectric properties compared to conventional dielectrics and dielectric microcomposites [4][5][6][7][8][9][10][11]. XLPE-based nanodielectrics containing silica nanoparticles can present improvements in several key dielectric properties over neat XLPE, such as increased dielectric breakdown strength, enhanced voltage endurance, enhanced partial-discharge resistance and reduced space charge accumulation [12][13][14][15][16].…”
Section: Introductionmentioning
confidence: 99%
“…It starts from a void in macroscopic scale somewhere in dielectric. The process is very fast (<< 1 s) at only one location, then the dielectric could not be used anymore [18].…”
Section: The Spatio-temporal Relation Between Ageing Degradation Andmentioning
confidence: 99%
“…Under a variety of field stresses, the breakdown suffered by dielectric material presents a very strong time-dependent relationship, so it can be divided into five or more kinds by breakdown speed as shown in Table 1 [18]. The three formers are known as the short-term breakdown, the others are degradation [19][20].…”
Section: The Spatio-temporal Relation Between Ageing Degradation Andmentioning
confidence: 99%
“…Strong hydrogen bonding between the silica surface silanols and silicone oil has been noted previously, but the silicone oil likely exists as a partial monolayer on the surface as the excess has been washed off in a good solvent. 37 'Spike' breakdown, because of its sudden, high slope, is estimated by the authors to possess greater electronic character than the other I-V types because of its abrupt nature relative to thermal processes; 10,38 however, given the limited time resolution of our experiments, conclusive evidence of this character is not presented. The complex nature of the 'Spike-Ohmic' and 'Discharge' I-V types probably consist of both electronic and thermal breakdown mechanisms operating simultaneously, although 'Discharge' may also represent other pre-breakdown phenomena, such as those associated with avalanche quenching.…”
Section: B Weibull Analysismentioning
confidence: 69%