Study on increase of electrostatic charging tendency of insulating oil and the diagnosis on streaming electrification

Tsuchic, M.; Hosokawa, N.; Isaka, Susumu; Miyao, H.; Ishii, T.; Kobayashi, S.; Kobayashi, Tomoyuki; Ono, Takao; Ōkubo, H.

doi:10.1109/icdl.1999.798918

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Although the streaming electrification characteristics of flowing mineral oil in a transformer have been reported for a long time, data for silicone oil is scarce [4][5][6][7][8]. So, as part of a basic study, we have investigated the streaming electrification characteristics of flowing silicone oil at room temperature and studied the series for streaming electrification of insulators obtained from the differences between the equivalent work functions of the insulators [9].…”

Section: Introductionmentioning

confidence: 98%

Effect of temperature on the streaming electrification characteristics of silicone oil

Ishikawa

Yasuda

Igarashi

et al. 2009

IEEE Trans. Dielect. Electr. Insul.

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We have investigated the performance of silicone oil as an insulating medium with the aim of developing environmentally-friendly, flame-retardant electric power equipment. We have studied the streaming electrification characteristics of silicone oil during flow, with regard to its use in the cooling of electric power equipment, at temperatures from 30 to 130 °C. The effects of the insulator material on the charge density in the oil and on the accumulated charge density in the insulator were investigated. We use four kinds of insulators, including aramid paper, in these experiments. The silicone oil was negatively charged by streaming electrification, in contrast to conventional mineral oil. The magnitude of the accumulated charge density in the insulator was influenced by the kind of insulator. It was also found that the charge density in the silicone oil and the accumulated charge density in the insulator changed with increasing temperature. Moreover, we investigated the effect of the kinematic viscosity on the streaming electrification by performing experiments using oils with kinematic viscosities of 20 cSt and 50 cSt. We have considered the optimum combinations of silicone oil and insulator material.

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Section: Introductionmentioning

confidence: 98%

Effect of temperature on the streaming electrification characteristics of silicone oil

Ishikawa

Yasuda

Igarashi

et al. 2009

IEEE Trans. Dielect. Electr. Insul.

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“…To date, the streaming electrification characteristics have been investigated using mineral oil [4][5][6][7][8]. However, there exists no comparable information for silicone oil.…”

Section: Introductionmentioning

confidence: 99%

Streaming Electrification Characteristics of Silicone Oil

Nakajima

Miyahara

Ishikawa

et al. 2008

IEEE Trans. Dielect. Electr. Insul.

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We present a study of the performance of silicone oil as an environmentally friendly and flame retardant insulating medium for electric power equipment. We have investigated the streaming electrification characteristics for flowing silicone oil for cooling of electric power equipment. As the initial step, the electric charge density accumulated in silicone oil and on the surface of the insulator is investigated simultaneously. We have used 5 types of insulating material for the experiment, including aramid paper. Silicone oil becomes negatively charged by streaming electrification, in contrast to conventional mineral oil, and the magnitude of the electric charge density on the insulating material is influenced by the kind of insulating material. As the second step, the streaming electrification characteristics of silicone oil were further examined using an insulator for which the work function is known. Based on these results, streaming electrification for various kinds of insulator and silicone oil is evaluated with respect to the work function. We consider the optimum combination of silicone oil and insulating material.

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Investigation of charge behavior in flowing transformer oil/pressboard composite insulation system by electro-optic field measurement

Ōkubo

Hashiba²,

Katō³

et al.

Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on In

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Study on increase of electrostatic charging tendency of insulating oil and the diagnosis on streaming electrification

Cited by 4 publications

References 4 publications

Effect of temperature on the streaming electrification characteristics of silicone oil

Effect of temperature on the streaming electrification characteristics of silicone oil

Streaming Electrification Characteristics of Silicone Oil

Investigation of charge behavior in flowing transformer oil/pressboard composite insulation system by electro-optic field measurement

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