| Project/Area Number |
13650360
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | NUMAZU COLLEGE OF TECHNOLOGY |
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Principal Investigator |
TOHYAMA Kazuyuki NUMAZU COLLEGE OF TECHNOLOGY, DIGITAL ENGINEERING, ASSOCIATE PROFESSOR, 電子制御工学科, 助教授 (40197851)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2002: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2001: ¥2,500,000 (Direct Cost: ¥2,500,000)
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| Keywords | Polyethylene / electroluminescence / dissipation current / Dielectric property / high field / space charge / 3-terminal electrode system / insulation / 無極性高分子フィルム / 損失電流波形観測 / 誘電特性 |
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| Research Abstract |
Polymeric insulators are widely used in high voltage devices such as capacitors, cables and transformers. Electroluminescence (EL), the emission of light in insulation materials subjected to high electric stress, is known to occur much before partial discharge inception. EL emission has been linked to the space charge region in the polymeric insulation. At high ac fields, charge injection from the electrodes into the insulation becomes dominant and the dissipation current becomes nonlinear due to the space charge in the insulation. In this research, in order to carry out the simultaneous measurement of EL emission and dissipation current, the sample for observing these phenomena under uniform high electric filed has been developed. By using this sample, simultaneous measurement has been carried out. As results of these experiments, it was found that at the onset of EL emission the dissipation current waveform deviates from its sinusoidal characteristics and starts to show harmonics. The increase in the third harmonic of the dissipation could indicate a change in the conduction mechanism.
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