全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

应用油中酸值评估不同老化程度绝缘纸中水分含量

DOI: 10.13336/j.1003-6520.hve.2015.01.016, PP. 115-122

Keywords: 绝缘油,绝缘纸,热老化,酸值,水分,饱和溶解度,平衡曲线

Full-Text   Cite this paper   Add to My Lib

Abstract:

变压器油纸绝缘老化会影响水分在油纸中的分布情况,为此,应用绝缘油中酸值作为老化的特征参数以定量描述老化对水分分布的影响。对4组油纸绝缘试样进行不同程度的加速热老化试验,结果表明油纸绝缘老化导致油中水分的饱和溶解度不断增加,并促使绝缘纸中水分向绝缘油中转移。根据试验测量结果,引入与油中酸值相关的平移因子m,建立了绝缘油中水分饱和溶解度与油中酸值和温度的数学表达式;根据Freundlich等温吸附方程式建立了绝缘纸中水分质量分数与油中水分质量分数、油中酸值和温度的数学表达式,拟合得到吸附平衡常数c和系数n与温度的关系式。应用以上研究成果可以更准确有效地评估不同老化程度的绝缘纸中水分质量分数,具有重要工程应用价值。

References

[1]  Wang M, Vandermaar A J, Srivastava K D. Review of condition assessment of power transformers in service[J]. IEEE Electrical Insulation Magazine, 2002, 18(6): 12-25.
[2]  周利军,李先浪,王晓剑,等. 基于回复电压曲线的油纸绝缘状态评估[J]. 高电压技术,2014,40(2):489-496. ZHOU Lijun, LI Xianlang, WANG Xiaojian, et al . Status assessment of oil-paper insulation based on recovery voltage method[J]. High Voltage Engineering, 2014, 40(2): 489-496.
[3]  吕 玮,吴广宁,周利军,等. 采用介电频谱法分析评估油纸绝缘的微水质量分数[J]. 高电压技术,2010,36(12):3015-3020. LÜ Wei, WU Guangning, ZHOU Lijun, et al . Analysis on moisture in oil-paper insulation using frequency domain spectroscopy[J]. High Voltage Engineering, 2010, 36(12): 3015-3020.
[4]  Emsley A M, Xiao X, Heywood R J, et al . Degradation of cellulosic insulation in power transformers, part 3: effect of oxygen and water on aging in oil[J]. IEE Proceedings-Science, Measurement and Technology, 2000, 147(3): 115-119.
[5]  刘 君,吴广宁,周利军,等. 变压器油纸绝缘微水扩散暂态的电介质频率响应[J]. 中国电机工程学报,2013,33(1):171-178. LIU Jun, WU Guangning, ZHOU Lijun, et al . Dielectric frequency response of oil-paper composite insulation with transient moisture equilibrium[J]. Proceedings of the CSEE, 2013, 33(1): 171-178.
[6]  吴广宁,王晓剑,李先浪,等. 有机酸对油纸绝缘热老化及频域介电谱特性的影响[J]. 高电压技术,2014,40(5):1424-1432. WU Guangning, WANG Xiaojian, LI Xianlang, et al . Influence of organic acids on thermal aging and frequency domain dielectric spectroscopy characteristics of oil-paper insulation[J]. High Voltage Engineering, 2014, 40(5): 1424-1432.
[7]  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.
[8]  Zaengl W S. Dielectric spectroscopy in time and frequency domain for HV power equipment I.theoretical considerations[J]. IEEE Electrical Insulation Magazine, 2003, 19(5): 5-19.
[9]  Ekanayake C. Diagnosis of moisture in transformer insulation application of frequency domain spectroscopy[D]. Goteborg, Sweden: Chalmers University of Technology, 2006: 25-26.
[10]  周利军,李先浪,吴广宁,等. 油纸绝缘电介质响应低频弥散的极化机理[J]. 高电压技术,2013,39(8):1873-1880. ZHOU Lijun, LI Xianlang, WU Guangning, et al . Low frequency dispersion mechanism of dielectric response for oil-paper insulation diagnosis[J]. High Voltage Engineering, 2013, 39(8): 1873-1880.
[11]  Oommen T V. Moisture equilibrium charts for transformer insulation dying practice[J]. IEEE Transactions on Power Apparatus System, 1984, 103(10): 3063-3067.
[12]  Arakelian V G, Fofana I. Water in oil-filled, high voltage equipment, part I: states, solubility and equilibrium in insulating materials[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2007, 23(4): 15-27.
[13]  Arakelian V G, Fofana I. Water in oil-filled, high voltage equipment, part II: water content as physiochemical tools for insulation condition diagnosis[J]. IEEE Electrical Insulation Magazine, 2007, 23(5): 15-25.
[14]  周利军,汤 浩,张血琴,等. 油纸绝缘微水扩散的暂态分布模型[J]. 中国电机工程学报,2008,28(7):134-140. ZHOU Lijun, TANG Hao, ZHANG Xueqin, et al . Disequilibrium moisture partition in oil-paper insulation[J]. Proceedings of the CSEE, 2008, 28(7): 134-140.
[15]  周利军,汤 浩,吴广宁,等. 油纸绝缘微水扩散的稳态分布[J]. 高电压技术,2007,33(8):27-30. ZHOU Lijun, TANG Hao, WU Guangning, et al . Equilibrium moisture distribution in oil-paper insulation[J]. High Voltage Engineering, 2007, 33(8): 27-30.
[16]  Przybylek P. The influence of temperature and aging of cellulose on water distribution in oil-paper insulation[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2013, 20(2): 552-556.
[17]  王 伟,马志青,李成榕,等. 纤维素老化对油纸绝缘水分平衡的影响[J]. 中国电机工程学报,2012,32(31):100-105,224. WANG Wei, MA Zhiqing, LI Chengrong, et al . Impact of cellulose aging on moisture equilibrium of oil-pressboard insulation[J]. Proceedings of the CSEE, 2012, 32(31): 100-105, 224.
[18]  Lundgaard L E, Hansen W, Ingebrugtsn S. Aging of mineral of impregnated cellulose by acid catalysis[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008, 15(5): 540-546.
[19]  Lundgaard L E, Hansen W, Ingebrugtsn S, et al . Aging of kraft paper by acid catalyed hydrolysis[C]∥2005 IEEE International Conference on Dielectric Liguids. Coimbra, Portugal: IEEE, 2000: 381-384.
[20]  郝 建. 变压器油纸绝缘热老化的时频域介电和空间电荷特性研究[D]. 重庆:重庆大学,2012:3-4. HAO Jian. Study on time/frequency domain dielectric spectroscopy and space charge characteristics of transformer oil-paper insulation thermal aging[D]. Chongqing, China: Chongqing University, 2012: 3-4.
[21]  黄金保. 纤维素快速热解机理的分子模拟研究[D]. 重庆:重庆大学,2010:33-34. HUANG Jinbao. Molecular simulation study of pyrolysis mechanism of cellulose[D]. Chongqing, China: Chongqing University, 2010: 33-34.
[22]  Fofana I, Borsi H, Gockenbach E. Fundamental investigations on some transformer liquids under various outdoor conditions[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2001, 8(6): 1040-1047.
[23]  廖瑞金,唐 超,杨丽君,等. 电力变压器用绝缘纸热老化的微观结构及形貌研究[J]. 中国电机工程学报,2007,27(33):59-64. LIAO Ruijin, TANG Chao, YANG Lijun, et al . Research on the microstructure and morphology of power transformer insulation paper after thermal aging[J]. Proceedings of the CSEE, 2007, 27(33): 59-64.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133