水分对油纸绝缘热老化速率及热老化特征参量的影响

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (464 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In this paper, a aging test is designed, in which the insulating papers with the initial moisture contents of 1%, 3%, 5% were aged in transformer oil at 110℃ and 130℃ respectively. The influences of the different initial moisture contents on the oil-paper insulation thermal aging rate are studied systematically. This paper also analyes the variation trends of some aging indicators including degree of polymerization of insulation paper, water content in paper, and water, furfural, acid content in oil during the aging process. The results indicate that, water can accelerate thermal aging rate of the oil-paper insulation, and the lower the temperature the greater the impact factor of water content to accelerate aging. The water content in both oil and paper are fluctuant during the aging process, the fluctuation amplitude in oil and paper have a good positive correlation, and the relationship is related to the initial moisture content. Water can affect the proliferation and the distribution ratio of the aging characteristic products such as furfural and acid in the oil-paper system. Therefore, to make the assessment insulation state and insulation damp effect more accurate, this paper suggests that the global relationship of the fluctuations trend between oil and paper water content and the fluctuation amplitude should be take into consideration, as well as the impact of water when using the traditional characteristic parameters such as furfural, acid in oil to assess the oil-paper insulation state and fault diagnosis.

Key words： Water oil-paper insulation thermal aging power transformer thermal aging rate aging characteristic indicators

Received: 04 December 2009 Published: 20 March 2014

PACS:

TM835

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Liao Ruijin
	Sun Huigang
	Yin Jianguo
	Gong Jing
	Yang Lijun
	Zhang Yiyi

Cite this article:

Liao Ruijin,Sun Huigang,Yin Jianguo等. Influence on the Thermal Aging Rate and Thermal Aging Characteristics Caused by Water Content of Oil-Paper Insulation[J]. Transactions of China Electrotechnical Society, 2012, 27(5): 34-42.

URL:

http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I5/34

[1] 廖瑞金, 冯运, 杨丽君, 等. 油纸绝缘老化特征产物生成速率研究[J]. 中国电机工程学报, 2008, 28(10): 142-147.
Liao Ruijin, Feng Yun, Yang Lijun, et al. Study on generation rate of characteristic products of oil-paper insulation aging[J]. Proceedings of the CSEE, 2008, 28(10): 142-147.
[2] 廖瑞金, 杨丽君, 孙才新, 等. 基于局部放电主成分因子向量的油纸绝缘老化状态统计分析[J]. 中国电机工程学报, 2006, 26(14): 114-119.
Liao Ruijin, Yang Lijun, Sun Caixin, et al. Aging condition assessment of oil-paper based on principal component and factor analysis of patical discharge[J]. Proceedings of the CSEE, 2006, 26(14): 114-119.
[3] 杨丽君, 廖瑞金, 孙会刚, 等. 油纸绝缘热老化特性及生成物的对比分析[J]. 中国电工程学报, 2008, 28(22): 53-58.
Yang Lijun, Liao Ruijin, Sun Huigang, et al. Contrasting analysis and investigation on properties and products of oil-paper during thermal aging process[J]. Proceedings of the CSEE, 2008, 28(22): 53-58.
[4] 廖瑞金, 梁帅伟, 周天春, 等. 天然酯-纸绝缘热老化速度减缓及其原因分析[J]. 电工技术学报, 2008, 23(9): 32-37.
Liao Ruijin, Liang shuaiwei, Zhou tianchun, et al. Comparison for the mineral oil-paper and the nature ester-paper insulation degradation and cause analysis[J]. Transactions of China ElectrotechnicaL Society, 2008, 23(9): 32-37.
[5] 刘玉仙. 油纸绝缘变压器中水分的聚积及其对热老化寿命的影响[J]. 变压器, 2004, 41(2): 8-12.
Liu Yuxian. Water accululation in oil-paper insulation transformer and its influence to life time[J]. Transformer, 2004, 41(2): 8-12.
[6] Koji ota, Masaki miura, Mototaka Sone, et al. Conduction of water clusters in modified aged oil[J]. Electrical Engineering in Japan, 2003, 145(2): 21-27.
[7] Itahashi S, Mitsui H, Sato T, et al. State of water in hydrocarbon liquids and its effect on conductivity[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1995, 2(6): 1117-1122.
[8] Bitam-Megherbi F, Osmani S, Megherbi M. The moisture effect on dielectric losses of insulating paper[C]. 2004 IEEE International Conference on Solid Dielectrics (ICSD 2004), Toulouse, France, 2004.
[9] Fabre J, Pichon A. Deteriorating processes and products of paper in oil application to transformers [C]. Proceedings of CIGRE Conference, Paris, France, 1960.
[10] Emsley A M, Xiao X, Heywood R J, et al. Degradation of cellulosic insulation in power transformers. Part 3: Effects of oxygen and water on ageing in oil[J]. IEE Proceedings-Science Measurement and Technology, 2000, 147(3): 115-119.
[11] Lundgaard Lars E, Hansen Walter, Linhjell Dag. Aging of oil-impregnated paper in power transformers[J]. IEEE Transactions on Power Delivery, 2004, 19(1): 230.
[12] Oommen T V. Moisture equilibrium in paper-oil systems[C]. Electrical/Electronics Insulation Conference, Chicago, USA, 1983.
[13] Du Y, Zahn M, Lesieutre B C, et al. Moisture equilibrium in transformer paper-oil systems[J]. IEEE Electrical Insulation Magazine, 1999, 15(1): 11-20.
[14] Zhou L J, G N Wu, J Liu. Modeling of transient moisture equilibrium in oil-paper insulation[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008, 15(3): 872-878.
[15] Patrick J Baird, Henryk Herman, Gary C Stevens, et al. Spectroscopic measurement and analysis of water andoil in transformer insulating paper[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2006, 13(1): 293-308.
[16] 陈伟根, 甘德刚, 刘强. 变压器油中水分在线监测的神经网络计算模型[J]. 高电压技术, 2007, 33(5): 73-78.
Chen Weigen, Gan Degang, Liu Qiang. On-line monitoring model based on neural network for moisture content in transformer oil[J]. High Voltage Engineering, 2007, 33(5): 73-78.
[17] 毕鹏翔, 张文元, 秦少臻, 等. 变压器固体绝缘状况的监测方法[J]. 高电压技术, 2000, 26(3): 47-51.
Bi Pengxiang, Zhang Wenyuan, Qin Shaozhen, et al. Methods for monitoring the condition of insulation in power trans- formers[J]. High Voltage Engneering, 2000, 26(3): 47-51.
[18] Emsley A M, Stevens G C. Review of chemical indicators of degradation of cellulosic electrical paper insulation in oil-filled transformers[J]. IEE Proceedings-Science, Measurement Technology, 1994, 141(5): 324-334.
[19] Pradhan M K, Ramu T S. On the estimation of elapsed life of oil-immersed power transformers[J]. IEEE Transactions on Power Delivery, 2005, 20(3): 1962-1969.
[20] David Allan. Recent advances in the analysis and interpretation of aged insulation from operating power transformers [C]. Proceedings of the 5th International Conference on Properties and Applications of Dielectric Materials, Seoul, Korea, 1997: 202-205.
[21] Lundgaard L E, Hansen W, Linhjell D, et al. Aging of oil-impregnated paper in power transformers[J]. IEEE Transations on Power Delivery, 2004, 19(1): 230-239.
[22] Emsley A M, Xiao X, Heywood R J, et al. Degradation of cellulosic insulation in power transformers. Part 2: Formation of furan products in insulating oil[J]. IEE Proceedings-Science, Measurement and Technology, 2000, 147(3): 110-114.
[23] Burton P J, Carballeira M, Fuller C W. Application of liquid chromatography to the analysis of electrical insulating materials[C]. Interational Conference on Large High Voltage Electric Systems, Paris, France, 1988.
[24] Chendong X, Qiming F. To estimate the aging status of transformers by furfural concentration in the oil[C]. CIGRE Study Committee 33 Colloquium, Leningrad, Moscow, 1991.