The development of the way of measuring the leakage current to evaluate the deterioration of the insulation material in the snowy cold region

雪寒地区漏电流测量评估绝缘材料劣化程度的方法研究

• 批准号: 13650324
• 负责人: HASEGAWA Seiichi
• 金额: $ 1.15万
• 依托单位: AKITA NATIONAL COLLEGE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650324/
• 关键词: polymeric insulation material; leakage current; dry-band arc discharge; scintillation discharge; harmonic component; tracking deterioration; erosion; hydrophobicity; 吸水現象; 積雪地域; 凍結; トラッキング破壊; 接触角

This research was done for the purpose of evaluating the deterioration of the polymeric insulation material used under snowy cold condition by the measurement of leakage current. Leakage current magnitude in wet and contaminated condition is one of significant indicators to assess electrical performances of outdoor insulators during operation.. However, because conductive current and discharge current flow alternately and intermittently on the surface of the polymeric insulator, therefore these magnitudes change seriously. So it is difficult to evaluate the deterioration of the insulator only by that level. It seems that apart from the leakage current magnitudes, the shape of the waveform, namely high frequency components, also can provide useful information the state of the polymeric insulator surface. In this research we employ IEC587 test for measuring leakage current. Tests have been carried out under -20〜+25℃ in a laboratory chamber.Early stage of this test, polymer surfaces resist being wetted and allow extremely low leakage current. At this time minute glow discharges are scattered on the surface of the material. With the test duration, the polymer surfaces gradually transfer to wet and allow leakage current to develop. As for this discharge, polymeric insulation material does final tracking deterioration. Leakage current has high frequency components at this time. This harmonic component shows that failure of the polymeric insulation material will happen soon.When silicon rubber suffers the damage of the discharge, the type of the failure is not tracking breakdown, and becomes erosion. Not only erosion makes it lose the insulation function of the silicon rubber but also its structure is destroyed. When leakage current is interrupted once, erosion will appear on the silicon rubber.

这项研究是用于通过泄漏电流测量的聚合物材料材料材料材料材料材料，在操作过程中。大幅度变化，因此仅通过该水平的泄漏量来使泄漏量降低。测量在实验室中的25°C。 BER遭受排放的损害，失败并不是在跟踪硅橡胶的功能。

项目成果

Seiichi HASEGAWA et al.: "The Analysis of Surface Leakage Current flowing on Polymer Insulating Materials"Bulletin of Akita National College of Technology. Vol.38. 36-42

Seiichi HASEGAWA 等人：“高分子绝缘材料上流动的表面漏电流的分析”秋田国立工业大学通报。

長谷川誠一: "ポリマー絶縁材料の表面性状におよぼす吸水の影響"秋田工業高等専門学校研究紀要. 第35号. 17-21 (2000)

长谷川精一：“吸水率对高分子绝缘材料表面性能的影响”秋田工业大学研究公报第35. 17-21号（2000年）。

Seiichi HASEGAWA: "Characteristics of Leakage Current on Polymeric Insulating Material Surfaces"Bulletin of Akita National College of Technology. Vol.36. 25-29

长谷川精一：《高分子绝缘材料表面漏电流的特性》秋田国立工业大学通报。

長谷川誠一他: "ポリマー絶縁材料表面を流れる漏れ電流の分析"秋田工業高等専門学校研究紀要. 第38号. 36-42 (2003)

长谷川精一等人：“高分子绝缘材料表面流动的漏电流分析”秋田工业大学研究公报第38. 36-42号（2003年）。

長谷川誠一: "ポリマー絶縁材料表面における漏れ電流の特性"秋田工業高等専門学校研究紀要. 第36号. 25-29 (2001)

长谷川精一：《高分子绝缘材料表面漏电流的特性》秋田工业大学研究公报第36. 25-29号（2001年）。