PC和PET油中电热老化过程中聚合度和介损特性分析

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Abstract Power transformer plays a crucial role in the generation, transmission, transformation and distribution system. The reliability and operational efficiency of power system is directly related to its performance and quality. So it is very significant to explore new polymer materials instead of insulating paper to improve electric field distribution and insulation structure. This will be very beneficial to make transformer large-capacity and compact, and there is a very good application prospects. In this paper, two kinds of high-temperature resistance polymer materials-polycarbonate(PC) and polyester(PET) are chosen as the candidates for comparison with paper. They are put in the transformer oil with electrical-thermal aging for 300 days under 90℃, 110℃ and 130℃ respectively. The tests for the degree of polymerization(DP) and dielectric loss factor are studied, combined with the physical properties and electron microscope scanning(SEM) to decide whether they can be used in oil-immersed transformer.

Key words： Oil-immersed transformer polymer materials electrical-thermal aging DP dielectric loss factor SEM

Received: 10 April 2013 Published: 27 June 2014

PACS:	TM855
	TM210.142

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	Yang Kai
	Wang Wei
	Du Jiazhen
	Li Fuping
	Gu Jiefeng

Cite this article:

Yang Kai,Wang Wei,Du Jiazhen等. Analysis on DP and tanδ Characteristics of PC and PET in the Electrical-Thermal Aging Process in Oil[J]. Transactions of China Electrotechnical Society, 2014, 29(4): 282-289.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I4/282

[1] 廖瑞金, 杨丽君, 郑含博, 等. 电力变压器油纸绝缘热老化研究综述[J]. 电工技术学报, 2012, 27(5): 1-12.
Liao Ruijin, Yang Lijun, Zheng Hanbo, et al. Reviews on oil-paper insulation thermal aging in power transformers[J]. Transactions of China Electrotechnical Society, 2012, 27(5): 1-12.
[2] 张镱议, 廖瑞金, 杨丽君, 等. 基于云理论的电力变压器绝缘状态评估方法[J]. 电工技术学报, 2012, 27(5): 13-20.
Zhang Yiyi, Liao Ruijin, Yang Lijun, et al. An assessment method for insulation condition of power transformer based upon cloud model thermal aging in power transformers[J]. Transactions of China Electrote- chnical Society, 2012, 27(5): 13-20.
[3] 武中利, 杨建, 朱永利, 等. 基于粗糙集理论和支持向量机的变压器故障诊断[J]. 电力系统保护与控制, 2010 , 38(18): 80-83.
Wu Zhongli, Yang Jian, Zhu Yongli, et al. Power transformer fault diagnosis based on rough set and support vector mach[J]. Power System Protection and Control, 2010, 38 (18): 80-83.
[4] 黄晶, 周宁, 马建伟, 等. 基于故障树分析的电力变压器可靠性跟踪方法[J]. 电力系统保护与控制, 2010, 40 (19): 72-77.
Huang Jing, Zhou Ning, Ma Jianwei, et al. Reliability tracing technique for power transformers using the fault tree analysis method[J]. Power System Protection and Control, 2010, 40(19): 72-77.
[5] 任静, 黄家栋. 基于免疫RBF神经网络的变压器故障诊断[J]. 电力系统保护与控制, 2010, 38(11): 6-9.
Ren Jing, Huang Jiadong. Transformer fault diagnosis based on immune RBF neural network[J]. Power System Protection and Control, 2010, 38(11): 6-9.
[6] 路宝民, 原丽. 牵引变压器绝缘老化特性研究[J]. 变压器, 1997, 34(6): 19-23.
Lu Baomin, Yuan Li. Research oil the characteristic of insulation aging for traction transformer[J]. Transformer, 1997, 34(6): 19-23.
[7] 唐超, 廖瑞金, 黄飞龙, 等. 电力变压器绝缘纸热老化的击穿电压特性[J]. 电工技术学报, 2010, 25(17): 1-8.
Tang Chao, Liao Ruijin, Huang Feilong, et al. The breakdown voltage of power transformer insulation paper after thermal aging[J]. Transactions of China Electrotechnical Society, 2010, 25(17): 1-8.
[8] 尹克宁. 采用高温绝缘材料的液浸式变压器[J]. 电力设备, 2004, 5(5): 19-23.
Yin Kening. Liquid immersed transformer with high temperature insulating material[J]. Electrical Equipment, 2004, 5(5): 19-23.
[9] 顾小虎. 耐高温绝缘结构液浸式变压器的特性[J]. 电器工业, 2005(3): 43-44.
Gu Xiaohu. Properties of high temperature resistant insulation structure liquid immersion type transformer [J]. China Electrical Equipment Industry, 2005(3): 43-44.
[10] 王洋, 张东林. 电气绝缘系统及绝缘材料耐热性的新概念[J]. 大电机技术, 2009(4): 30-32.
Wang Yang, Zhang Donglin. The new concept of thermal endurance of electrical insulation system and insulating material[J]. Large Electric Machine and Hydraulic Turbine, 2009(4): 30-32.
[11] Marty Fox. New high temperature insulation for oil-filled transformer[J]. International Symposium Electrical Insulation, 1994: 567-569.
[12] Yue Caipeng, Wang Wei, Chen Guanghui, et al. Study on dielectric properties of polymer material in mineral oil under electro-thermal aging[C]. Asia-Pacific Power and Energy Engineering Conference, Shanghai, China, 2012.
[13] Wang Wei, Yang Kai, et al. Study on aging characteristics of oil-immersed paper and polymer material based on dielectric loss[C]. Conference on Electrical Insulation and Dielectric Phenomena, Montreal, Canada, 2012: 882-885.
[14] 张欲晓, 李胜利, 王梦君, 等. 变压器绝缘纸的聚合度变化规律[J]. 高电压技术, 2011, 37(10): 2458- 2463.
Zhang Yuxiao, Li Shengli, Wang Mengjun, et al. Degree of polymerization of insulation paper in the transformer[J]. High Voltage Engineering, 2011, 37(10): 2458-2463.
[15] 魏建林, 张冠军, 董明, 等．化学反应动力学预测油纸绝缘变压器老化寿命[J]. 高电压技术, 2009, 35(3): 544-550.
Wei Jianlin, Zhang Guanjun, Dong Ming, et al. Application of kinetics of chemical reaction in aging lifetime evaluation of oil-paper insulated transformers [J]. High Voltage Engineering, 2009, 35(3): 544-550.
[16] 浦鸿汀, 张先禹, 张庆伟. 用快速特性粘度法研究聚碳酸酯的热降解机理[J]. 建筑材料学报, 2004, 7(3): 360-363.
Pu Hongting, Zhang Xianyu, Zhang Qingwei. Studies on thermal degradation mechanism of polycarbonate by rapid intrinsic viscosity method[J]. Journal of Building Materials, 2004, 7(3): 360-363.
[17] 杜振霞, 饶国瑛, 南爱玲. 聚碳酸酯分子量及其分布、热稳定性研究[J]. 高分子材料科学与工程, 2001, 17(2): 53-56.
Du Zhenxia, Rao Guoying, Nan Ailing. Studies of the molecular weight and its distribution, thermal stability of PC[J]. Polymer Materials Science and Engineering, 2001, 17(2): 53-56.
[18] 彭辉. 聚酯的特性黏度与聚合度[J]. 聚酯工业, 2004, 17(3): 5-6.
Peng Hui. Relation between intrinsic viscosity and polymerization degree of PET[J]. Polyester Industry, 2004, 17(3): 5-6.
[19] 雷铭. 电力设备诊断手册[M]. 北京: 中国电力出版社, 2001.
[20] Heywood R J, Stevens G C, Ferguson C, et al. Life assessment of cable paper using slow thermal rampmethods[J]. Thermochimica Acta, 1999, 332(2): 189-195.
[21] Paolo Calvini. The influence of levelling-off degree of polymerisation on the kinetics of cellulose degradation[J]. Cellulose, 2005, 12(4): 445-447.
[22] 杨丽君, 廖瑞金, 孙会刚, 等. 变压器油纸绝缘热老化特性及特征量研究[J]. 电工技术学报, 2009, 24(8): 27-33.
Yang Lijun, Liao Ruijin, Sun Huigang, et al. Investigation on properties and characteristics of oil-paper insulation in transformer during thermal degradation process[J]. Transactions of China Electrote- chnical Society, 2009, 24(8): 27-33.
[23] 吴广宁, 周力任, 郭小霞, 等. 采用tanδ 表征变频电机绞线对绝缘老化特性的研究[J]. 高电压技术, 2010, 36(7): 1625-1629.
Wu Guangning, Zhou Liren, Guo Xiaoxia, et al. Aging characteristics of inverter-fed motor twisted pair using tanδ [J]. High Voltage Engineering, 2010, 36(7): 1625-1629.
[24] 廖瑞金, 袁泉, 唐超, 等. 不同老化因素对油纸绝缘介质频域谱特性的影响[J]. 高电压技术, 2010, 36(7): 1612-1618.
Liao Ruijin, Yuan Quan, Tang Chao, et al. Influence of different aging conditions on characteristics of frequency domain spectroscopy of oil-paper insulation medium[J]. High Voltage Engineering, 2010, 36(7): 1612-1618.
[25] Verma P, Roy M, Verma A, et al. Assessment of degradation of transformer insulation paper by SEM and X-RD techniques[C]. IEEE International Conference Solid Dielectrics(ICSD2004), Toulouse, France, 2004: 657- 660.
[26] Okamoto T, Meshitsuka G. Determination of the surface layer of kraft pulp fibers by field emission scanning electron microscopy[J]. Japan TAPPI Journal, 2003, 57: 1532-1536.