Influence of the Groove on Barrier Surface on Creeping Discharge Characteristics in N2 Gas under .MU.s Pulse Voltage

Ueno, H.; Kawano, T.; Sakamoto, Naoki; Nakayama, Hiroshi

doi:10.1541/ieejfms.123.1010

Cited by 1 publication

(1 citation statement)

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“…It has been reported that surface roughness or scratches of insulators affect partial discharge (PD) spreading on insulator surface [1] [2] . We developed surface potential distribution measuring system with the vibrating reed electrometer to inquire the PD spreading after the exposure of the PDs on insulator surface.…”

Section: Introductionmentioning

confidence: 99%

Restrain effect of partial discharge spreading by insulator surface barriers

Ishida

Nagao

2008

2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)

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We have made researches on the internal partial discharge degradation phenomena of dielectric materials. In this paper, we investigate that the restrain effect of partial discharge spreading on the insulator surface by scratch or dielectric barriers. We prepared a few types of specimen for experiment to study the restrain effect of partial discharges on insulator. The 1mm thick and 50 x 50 mm square plates made of polymethyl methacrylate (PMMA) were used for the experiments. One specimen had a scratch on the surface of PMMA. Another specimen had a couple of parallel polyimide tapes in the one side of the surface for the dielectric barriers. Each tape was pasted horizontally around center of the specimen and the interval of tapes was about 5 to 20 mm. From the experimental results, following conclusions were obtained. The dielectric barriers restrain the spreading of partial discharge on insulators surface. However, the restrain effects of barriers were weakened if the irradiating position of PD close to the dielectric barriers.

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Section: Introductionmentioning

confidence: 99%