A new diagnosis of the XLPE insulation with water treeing by space charge measurements with the thermal step method and water nuclear magnetic resonance imaging

Castellon, J.; Agnell, S.; Toureille, A.; Platbrood, G.; Tits, Y.; Adriaensens, Peter; Carleer, Robert; Vangulick, D.

doi:10.1109/ceidp.2005.1560738

Cited by 1 publication

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“…As well as for the flat specimens discussed in Section II B, a similar experiment was done in order to evaluate the effect of water trees on space charge accumulation in 50 cm and 70 m long cable specimens. 54 The smaller sample has been tested by using the OCT (a thermal step of −30 • C), while the longer one was studied using IHT. The presence of water trees, as for flat specimens, results in a greater accumulation of charge for both samples.…”

Section: The Thermal Step Methods For Cablesmentioning

confidence: 99%

Contributed Review: Review of thermal methods for space charge measurement

Imburgia

Romano

Caruso

et al. 2016

Review of Scientific Instruments

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Decay of space charge in conjugated polymers measured using pyroelectric current transients J. Appl. Phys. 93, 2884 (2003) The space charge accumulation phenomenon has garnered great interest over the last two decades because of the increased use of direct current in high voltage electrical systems. In this context, a significant relevance has been achieved by the thermal methods, used for solid dielectrics. This paper presents a review of this non-destructive measurement system used for the measurement of space charge. The thermal pulse method, the thermal step method, and the laser intensity modulation method are described. For each configuration, the principle of operation, the thicknesses analyzed, and the spatial resolution are described, reporting also the main related applications. Published by AIP Publishing. [http://dx

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Section: The Thermal Step Methods For Cablesmentioning

confidence: 99%