交联聚乙烯热老化与绝缘性能的关联关系

doi:10.11930/j.issn.1004-9649.202003216

中国电力 ›› 2020, Vol. 53 ›› Issue (9): 118-124.DOI: 10.11930/j.issn.1004-9649.202003216

• 高压电缆及附件关键技术专栏 • 上一篇下一篇

交联聚乙烯热老化与绝缘性能的关联关系

赵莉华¹, 杨兰¹, 李巍巍², 吴惟庆¹, 任俊文¹

1. 四川大学电气工程学院，四川成都 610065;
2. 国网四川省电力公司电力科学研究院，四川成都 610065

收稿日期:2020-03-30 修回日期:2020-05-14 发布日期:2020-09-09
作者简介:赵莉华(1968—)，女，副教授，从事高压开关设备状态监测、电能质量研究，E-mail：tyorika@163.com;任俊文(1988—)，男，通信作者，博士，从事高电压与绝缘技术研究，E-mail：myboyryl@scu.edu.cn
基金资助:
四川省电力公司科技项目(交联聚乙烯电力电缆火灾早期特征研究，52199718001Q)；中国博士后科学基金资助项目(2018M643475)

Relationship Between Thermal Aging and Insulation Properties of XLPE

ZHAO Lihua¹, YANG Lan¹, LI Weiwei², WU Weiqing¹, REN Junwen¹

1. College of Electrical Engineering, Sichuan University, Chengdu 610065, China;
2. State Grid Sichuan Electric Power Research Institute, Chengdu 610065, China

Received:2020-03-30 Revised:2020-05-14 Published:2020-09-09
Supported by:
This work is supported by the Science and Technology Project of Sichuan Electric Power Company (Research on the Early Fire Characteristics of XLPE Power Cables, No. 52199718001Q), the Postdoctoral Science Foundation of China (No.2018M643475)

摘要/Abstract

摘要： 为研究交联聚乙烯（cross-linked polyethylene，XLPE）绝缘材料的热分解活化能、电气特性和力学特性随热老化程度变化的规律，对交流电力电缆绝缘用XLPE材料在110 ℃下开展加速热老化实验。采用热失重（thermogravimtric analyzer, TGA）测试手段，对XLPE在20~600 ℃的热分解行为进行研究；采用交流击穿测试、宽频介电谱测试及体积电阻率测试，研究老化后XLPE试样的电气特性；采用拉伸实验测试，研究老化后XLPE试样的力学特性。结果表明：热老化使得XLPE的交联结构和结晶状态被破坏，XLPE活化能呈减小趋势。由于氧化反应快速进行，使得XLPE分子链发生断裂，交联结构变弱，导致XLPE绝缘材料严重劣化，其活化能、击穿强度、体积电阻率、弹性模量和断裂伸长率随老化时间增长呈下降趋势，而介电常数、介电损耗和电导率呈增加趋势。

关键词: XLPE, 热老化, 活化能, 电气特性, 力学特性

Abstract: In order to study the crossed-linked polyethylene (XLPE) insulation material in thermal decomposition activation energy, electrical and mechanical properties changing with thermal aging degree, accelerated thermal aging tests were carried out at 110 ℃ on XLPE insulation material for AC cables. The thermal decomposition behavior of XLPE at 20~600 ℃ was studied by thermogravimtric analyzer (TGA) test. The electrical properties of the aged XLPE samples were studied by AC breakdown testing, broadband dielectric spectrum testing and volume resistivity testing; and the mechanical properties of the aged XLPE samples were studied by tensile test. The results show that the crosslinking structure and crystalline state of XLPE are destroyed by thermal aging, and the activation energy of XLPE tends to decrease. Due to the rapid oxidation reaction, the XLPE molecular chain breaks and the cross-linking structure weakens, resulting in serious deterioration of XLPE insulation materials. The activation energy, breakdown strength, volume resistivity, elastic modulus and elongation at break tend to decrease with the increase of aging time, while the dielectric constant, dielectric loss and conductivity tend to increase.

Key words: XLPE, thermal aging, activation energy, electrical properties, mechanical properties

赵莉华, 杨兰, 李巍巍, 吴惟庆, 任俊文. 交联聚乙烯热老化与绝缘性能的关联关系[J]. 中国电力, 2020, 53(9): 118-124.

ZHAO Lihua, YANG Lan, LI Weiwei, WU Weiqing, REN Junwen. Relationship Between Thermal Aging and Insulation Properties of XLPE[J]. Electric Power, 2020, 53(9): 118-124.

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https://www.electricpower.com.cn/CN/Y2020/V53/I9/118

参考文献

[1] 朱爱荣, 曹晓珑. 交联聚乙烯绝缘材料热稳定性分析[J]. 电线电缆, 2006(1): 34–36
ZHU Airong, CAO Xiaolong. Analysis of the thermal stability of XLPE insulation[J]. Wire & Cable, 2006(1): 34–36
[2] LI H, LI J Y, LI W W, et al. Fractal analysis of side channels for breakdown structures in XLPE cable insulation[J]. Journal of Materials Science: Materials in Electronics, 2013, 24(5): 1640–1643.
[3] LI W W, LI J Y, YIN G L, et al. Frequency dependence of breakdown performance of XLPE with different artificial defects[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2012, 19(4): 1351–1359.
[4] LI H, LI J, WANG Q, et al. Investigation of dielectric and mechanical properties of undegassed XLPE cable with thermal treatment[J]. High Voltage Engineering, 2015, 41(4): 1237–1242.
[5] 霍瑞美. 交联聚乙烯热老化监测及快速热寿命评估[D]. 上海: 上海交通大学, 2014.
HUO Ruimei. Research on thermal aging monitoring and fast prediction on the life of XLPE[D]. Shanghai: Shanghai Jiao Tong University, 2014.
[6] 王丽梅. 110 kV电压等级交联聚乙烯绝缘材料老化特性研究[D]. 哈尔滨: 哈尔滨理工大学, 2013.
WANG Limei. Study on aging characteristics of 110 kV insulating cross-linked polyethylene materials[D]. Harbin: Harbin University of Science and Technology, 2013.
[7] 张佳庆, 张博思, 王刘芳, 等. 电线电缆带电燃烧研究进展[J]. 材料导报, 2017, 31(15): 1–9, 35
ZHANG Jiaqing, ZHANG Bosi, WANG Liufang, et al. The state of the art of combustion behavior of live wires and cables[J]. Materials Reports, 2017, 31(15): 1–9, 35
[8] XIE A S, ZHENG X Q, LI S T, et al. Investigations of electrical trees in the inner layer of XLPE cable insulation using computer-aided image recording monitoring[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2010, 17(3): 685–693.
[9] CHISHOLM N, MAHFUZ H, RANGARI V K, et al. Fabrication and mechanical characterization of carbon/SiC-epoxy nanocomposites[J]. Composite Structures, 2005, 67(1): 115–124.
[10] GWAILY S E, BADAWY M M, HASSAN H H, et al. Natural rubber composites as thermal neutron radiation shields: I. B4C/NR composites[J]. Polymer Testing, 2002, 21(2): 129–133.
[11] NISHII K, KIMURA K, ISHIZUKA M, et al. Polyamide resin composition and housing for electronic equipment: US5470909[P]. 1995-11-28.
[12] 欧阳本红, 赵健康, 陈铮铮, 等. 老化方式对交流交联聚乙烯电缆空间电荷分布的影响[J]. 高电压技术, 2012, 38(8): 2123–2128
OUYANG Benhong, ZHAO Jiankang, CHEN Zhengzheng, et al. Influence of aging mode on space charge distribution of AC XLPE cables[J]. High Voltage Engineering, 2012, 38(8): 2123–2128
[13] 胡丽斌, 陈杰, 李陈莹, 等. XLPE电缆绝缘加速热老化特性[J]. 绝缘材料, 2020, 53(2): 59–63
HU Libin, CHEN Jie, LI Chenying, et al. Accelerated thermal ageing characteristics of XLPE cable insulation.[J]. Insulating Materials, 2020, 53(2): 59–63
[14] 刘继平, 王浩鸣, 唐庆华, 等. 热老化对直流XLPE绝缘性能的影响研究[J/OL]. 电力系统及其自动化学报: 1-7[2020-07-13]. https://doi.org/10.19635/j.cnki.csu-epsa.000339.
LIU Jiping, WANG Haoming, TANG Qinghua, et al. Study on the effect of thermal aging on the insulation performance of DC XLPE[J/OL]. Proceedings of the CSU-EPSA: 1-7[2020-07-13]. https://doi.org/10.19635/j.cnki.csu-epsa.000339.
[15] 李欢, 李建英, 马永翔, 等. 不同温度热老化条件下交联聚乙烯电缆绝缘热性能和力学性能的劣化趋势研究[J]. 绝缘材料, 2018, 51(1): 57–63
LI Huan, LI Jianying, MA Yongxiang, et al. Degradation trend of thermal and mechanical properties of XLPE cable insulation thermal ageing at different temperatures[J]. Insulating Materials, 2018, 51(1): 57–63
[16] 康茹雪. 环境压力对非碳化黑色ABS热解、着火性能及CO释放影响研究[D]. 合肥: 中国科学技术大学, 2017.
KANG Ruxue. Study on the influence of environment pressure on pyrolysis, ignition performance and CO release of non-charring black ABS[D]. Hefei: University of Science and Technology of China, 2017.
[17] 朱江. 基于多场耦合的电力电缆温度场仿真及其监测系统研究[D]. 北京: 华北电力大学(北京), 2017.
ZHU Jiang. Research on monitoring system and temperature field simulation of power cable based on multi field coupling[D]. Beijing: North China Electric Power University, 2017.
[18] 兰莉. 温度对聚合物绝缘中空间电荷行为的影响[D]. 上海: 上海交通大学, 2015.
LAN Li. Effect of temperature on space charge distribution in polymer insulation[D]. Shanghai: Shanghai Jiao Tong University, 2015.
[19] 刘飞. 35 kV及以下XLPE电力电缆绝缘老化评估研究[D]. 上海: 上海交通大学, 2014.
LIU Fei. Evaluation of the insulation aging of 35 kV and below XLPE power cables[D]. Shanghai: Shanghai Jiao Tong University, 2014.

交联聚乙烯热老化与绝缘性能的关联关系

Relationship Between Thermal Aging and Insulation Properties of XLPE

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Relationship Between Thermal Aging and Insulation Properties of XLPE

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