| 微氧作用下天然酯变压器油热老化特性研究 |
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| 引用本文： | 张宗喜,刘睿,聂鸿宇,龙震泽,赵莉华,安建国,任俊文. 微氧作用下天然酯变压器油热老化特性研究[J]. 电测与仪表, 2021, 58(12): 63-68. DOI: 10.19753/j.issn1001-1390.2021.12.009 |
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| 作者姓名： | 张宗喜 刘睿 聂鸿宇 龙震泽 赵莉华 安建国 任俊文 |
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| 作者单位： | 国网四川省电力科学研究院,成都610072;国网广元供电公司,四川广元628000;四川大学电气工程学院,成都610065 |
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| 基金项目： | 国家电网有限公司科技项目资助(521997180018)；“特高压工程技术(昆明、广州)国家工程实验室”开放基金资助 |
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| 摘 要： | 天然酯变压器油因不饱和脂肪酸含量较高而易氧化,而变压器因储油罐与空气作用或密封设备产生泄漏等原因,会导致油中溶解微量的氧气.基于此,文章研究了微氧作用下天然酯变压器油的热老化特性,并分析了不同老化时间下油样的电气性能、油色谱特性以及两者之间的皮尔逊相关系数.结果 表明:适时微氧作用能在一定程度上延缓天然酯变压器油电气性能的降低;天然酯变压器油纸绝缘热老化的特征气体为CO2和C2 H6;天然酯变压器油的电气性能与油色谱中CO2-C2H6(油样中溶解的CO2与C2H6的百分比之差)之间存在强相关性.
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| 关 键 词： | 天然酯绝缘油 微氧作用 热老化 电气性能 油色谱 |
| 收稿时间： | 2019-12-15 |
| 修稿时间： | 2019-12-15 |
Study on Thermal Aging Characteristics of Natural Ester Transformer Oil under Micro-Oxygen |
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| Zhang Zongxi,Liu Rui,Nie Hongyu,Long Zhenze,Zhao Lihu,An Jianguo and Ren Junwen. Study on Thermal Aging Characteristics of Natural Ester Transformer Oil under Micro-Oxygen[J]. Electrical Measurement & Instrumentation, 2021, 58(12): 63-68. DOI: 10.19753/j.issn1001-1390.2021.12.009 |
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| Authors: | Zhang Zongxi Liu Rui Nie Hongyu Long Zhenze Zhao Lihu An Jianguo Ren Junwen |
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| Affiliation: | Sichuan Electric Power Research Institute,Sichuan Electric Power Research Institute,State Grid Guangyuan Power Supply Company,Sichuan Electric Power Research Institute,College of Electrical Engineering,Sichuan University,Chengdu,College of Electrical Engineering,Sichuan University,Chengdu,College of Electrical Engineering,Sichuan University,Chengdu |
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| Abstract: | Natural ester transformer oil is easy to oxidize due to its high content of unsaturated fatty acid, while the transformer will dissolve a small amount of oxygen in the oil due to the effect of oil tank and air or leakage of sealing equipment. Based on this, the thermal aging characteristics of natural ester transformer oil under micro-oxygen were studied, the electrical properties, oil chromatogram characteristics and Pearson correlation coefficient of the oil samples under different aging time are analyzed. The results show that the electrical properties of natural ester transformer oil can be delayed to some extent by the action of timely micro-oxygen; the characteristic gases of thermal aging of oil-paper insulation of natural ester transformer are CO2 and C2H6; there is a strong correlation between the electrical properties of natural ester transformer oil and CO2-C2H6 (the percentage difference between dissolved CO2 and C2H6 in oil samples) in the oil chromatogram. |
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| Keywords: | natural ester insulation oil, Microoxygenation, thermal aging, electrical properties, oilchromatograp |
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