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| 天然酯绝缘油纸系统低温耐压特性研究 |
| Pressure resistance characteristics of natural ester insulating oil-paper system at low temperature |
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| DOI：10.12166/j.zgyz.1003-7969/2020.02.010 |
| 中文关键词: 天然酯绝缘油 绝缘纸板 低温 击穿电压 |
| 英文关键词:natural ester insulating oil insulated cardboard low temperature breakdown voltage |
| 基金项目:国网山东省电力公司科技项目(2018A-007) |
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| 中文摘要: |
| 为研究低温条件下天然酯绝缘油、改性天然酯绝缘油以及其绝缘油纸系统的耐压特性，对大豆油基天然酯绝缘油、棕榈油基改性天然酯绝缘油以及其绝缘油纸系统在-20～10 ℃进行耐压试验。结果表明：两种绝缘油及对应的油纸系统工频击穿电压在-20～10 ℃内随温度的变化曲线都呈U型，击穿电压的极小值分布在-10～0 ℃区间内，棕榈油基改性天然酯绝缘油击穿电压最小值对应温度略低于大豆油基天然酯绝缘油；油纸系统中击穿电压波动范围较纯绝缘油小很多，且比较稳定。 |
| 英文摘要: |
| In order to study the pressure resistance characteristics of natural ester insulating oil, modified natural ester insulating oil and their insulating oil-paper system at low temperature,the pressure resistance test was carried out on soybean oil-based natural ester insulating oil, palm oil-based modified natural ester insulating oil, and their insulating oil-paper systems at -20 -10 ℃. The results showed that the breakdown voltage curve of the two natural ester insulating oils and the corresponding oil-paper systems were U-shaped with the temperature changing at -20-10 ℃. The minimum breakdown voltage distributed within the temperature range of -10-0 ℃. The minimum breakdown voltage of palm oill-based modified natural ester insulating oil corresponds to a slightly lower temperature than soybean oil-based natural ester insulating oil. The breakdown voltage fluctuation range of insulating oil-paper system was much smaller than that of pure insulating oil and was relatively stable. |
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