电缆本体中空间电荷的测量与特性

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (623 KB)
输出: BibTeX | EndNote (RIS)

摘要交联聚乙烯(XLPE)电力电缆本体中的空间电荷在其绝缘的老化和击穿过程中扮演着重要角色,因此研究电缆本体绝缘中空间电荷的分布具有重要的意义。研制了一套电缆本体空间电荷电声脉冲法的测量装置,通过升流器实现了电缆线芯温度的控制,模拟了电缆在实际运行过程中线芯的温度随流通电流的大小而变化的状态。利用该套装置研究了常温和不同线芯温度下电缆本体中空间电荷的分布特性。研究发现：电缆本体中的空间电荷随着加压时间的增加而增多,随着温度的升高而减少且上电极与下电极之间的时间差随之增加。短路处理可以消除绝缘中空间电荷,但消除过程缓慢且不彻底。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王伟
	孙辉
	李富平
	顾杰峰
	杜家振

关键词 ： XLPE电缆, 空间电荷, 电声脉冲法, 温度

Abstract：The space charge in the actual cross-linked polyethylene(XLPE) cable plays an important role in aging and breakdown of insulation. So it is important to research the distribution of space charge in cable’s insulation. In this paper a new space charge measurement device is developed, which can be used for actual cable based on the principle of pulsed electro-acoustic method(PEA). The temperature of cable core is controlled with current-lifting device to simulate the cable operation state that the temperature of cable core varied with the magnitude of the current flowing. The distribution characteristics of space charge in cable under normal temperature and different temperature are analyzed with above measurement device. Test results show that the space charge in cable increases with the rise of applying DC voltage time, and decreases with rise of the temperature of cable, and also the time difference between top electrode and ground electrode increases with the rise of the temperature of cable. The space charge in insulation can be eliminated after a short circuit. However, the process of elimination is slow and space charge cannot be completely eliminated.

Key words： XLPE cable space charge pulsed electro-acoustic method temperature

收稿日期: 2013-06-20 出版日期: 2015-03-23

PACS:

TM247

基金资助:国家重点基础研究发展计划(973计划) 资助项目(2009CB724506)

作者简介: 王伟男,1960年生,教授,硕士生导师,研究方向为高压电气设备在线监测与状态诊断技术。孙辉男,1988年生,硕士,研究方向为高压电气设备在线监测与状态诊断技术。

引用本文:

王伟, 孙辉, 李富平, 顾杰峰, 杜家振. 电缆本体中空间电荷的测量与特性[J]. 电工技术学报, 2015, 30(1): 255-260. Wang Wei, Sun Hui, Li Fuping, Gu Jiefeng, Du Jiazhen. Space Charge Measurement and Characteristics in the Actual Cable. Transactions of China Electrotechnical Society, 2015, 30(1): 255-260.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I1/255

[1] 孙红梅, 罗隆福, 陆佳政, 等. 110/220kV XLPE电缆绝缘在线监测方法的研究[J]. 高电压技术, 2004, 30(1): 28-30. Sun Hongmei, Luo Longfu, Lu Jiazheng, et al. Research on solution of on-line monitoring of 110/220kV XLPE cable insulation[J]. High Voltage Engineering, 2004, 30(1): 28-30.
[2] 万利, 陶文彪. 浅谈特高压直流输电[J]. 科教文汇, 2011(8): 102-103. Wan Li, Tao Wenbiao. An analysis of UHVDC[J]. The Science Education Article Collects, 2011(8): 102-103.
[3] 刘君, 吴广宁, 周凯, 等. 基于电声脉冲法的空间电荷测量装置[J]. 高电压技术, 2009, 35(3): 607-612. Liu Jun, Wu Guangning, Zhou Kai, et al. Space charge measurement device based on PEA method[J]. High Voltage Engineering, 2009, 35(3): 607-612.
[4] 王雅群, 尹毅, 李旭光, 等. 等温松弛电流用于10kV XLPE电缆寿命评估的方法[J]. 电工技术学报, 2009, 9(24): 33-37. Wang Yaqun, Yin Yi, Li Xuguang, et al. The method of lifetime evaluation on 10KV XLPE cables by isothermal relaxation current[J]. Transactions of China Electrotechnical Society, 2009, 9(24): 33-37.
[5] 李吉晓, 张冶文, 郑飞虎, 等. 交联聚乙烯中空间电荷分布及其机理研究[J]. 应用科学学报, 2001, 19(4): 283-287. Li Jixiao, Zhang Yewen, Zheng Feihu, et al. Distribu- tion of space charge and analysis of trap levels in cross-linked polyethylene[J]. Journal of Applied Sciences, 2001, 19(4): 283-287.
[6] Lim F N, Fleming R J. Space charge accumulation in power cable XLPE insulation[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1999, 6(3): 273-281.
[7] Chen G, Davies A E, Xi B. Charge formation and decay in ?-irradiated low-density polyethylene[C]. Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials. Xi’an, China, 2000: 443-446.
[8] 郑飞虎, 张冶文, 肖春. 聚合物电介质的击穿与空间电荷的关系[J]. 材料科学与工程学报, 2006, 24(2): 316-320. Zheng Feihu, Zhang Yewen, Xiao Chun. Relationship between breakdown in polymer dielectrics and space charge[J]. Journal of Materials Science & Engineering, 2006, 24(2): 316-320.
[9] Bambery K R, Fleming R J. Space charge accumula- tion in two power cable grades of XLPE[J]. IEEE Trans on Dielectrics and Electrical Insulation, 1998, 5(1): 103-109.
[10] 王伟, 高超飞, 孙辉, 等. 电缆本体空间电荷电声脉冲法测量装置的研制[J]. 高电压技术, 2011, 37(6): 1349-1354. Wang Wei, Gao Chaofei, Sun Hui, et al. Development of cable space charge measurement device using pulsed electro-acoustic method[J]. High Voltage Engineering, 2011, 37(6): 1349-1354.
[11] 蔡川, 李旭光, 尹毅, 等. 空间电荷测量信号恢复中的频域反卷积技术及实现[J]. 电工技术学报, 2009, 10(24): 165-168. Cai Chuan, Li Xuguang, Yin Yi, et al. Frequency domain deconvolution technique and its implementation in the recovery of the space charge signal[J]. Transactions of China Electrotechnical Society, 2004, 10(24): 165-168.
[12] 周凯, 吴广宁, 刘君, 等. 基于电声脉冲法的空间电荷直接测量仪的研制[J]. 仪器仪表学报, 2008, 29(10): 2110-2115. Zhou Kai, Wu Guangning, Liu Jun, et al. Development of space charge direct measurement device for polymer insulation based on PEA[J]. Chinese Journal of Scientific Instrument, 2008, 29(10): 2110-2115.
[13] Li Y, Takada T. Progress in space charge measurement of solid insulating materials in Japan[J]. IEEE Electrical Insulation Magazine, 1994, 10(5): 16-28.
[14] 王宁华, 高斌, 周远翔, 等. 一个实用电声脉冲法的空间电荷测量系统[J]. 电测与仪表, 2004, 41(11): 12-16. Wang Ninghua, Gao Bin, Zhou Yuanxiang, et al. A practical space charge testing system realized by the pulse electro-acoustic method[J]. Electrical Measure- ment & Instrumentation, 2004, 41(11): 12-16.
[15] 尹毅, 韩社教, 屠德民. 固体绝缘中空间电荷测量装置的研制和应用[J]. 中国电机工程学报, 2000, 20(8): 1-5. Yin Yi, Han Shejiao, Tu Demin. Developing and application of apparatus of space charge measurement in solid insulation materials[J]. Proceedings of the CSEE, 2000, 20(8): 1-5.
[16] 吴琼, 朱永华, 顾金, 等. 塑料绝缘直流高压电缆中空间电荷测量技术的研究[J]. 电线电缆, 2011(3): 22-25. Wu Qiong, Zhu Yonghua, Gu Jin, et al. Research of space charge measurement polymer-insulated HVDC cable[J]. Electric Wire & Cable, 2011(3): 22-25.
[17] Hozumi N, Okamoto K, Imajo T. Space charge distribution measurement in a long size XLPE cable using the pulsed electroacoustic method[C]. Conference Record of the IEEE International Symposium on Electrical Insulation, Baltimore, MD USA, 1992: 294-297.
[18] Hozumi N, Takeda T, Suzuki H, et al. Space charge behavior in XLPE cable insulation under 0.2-1.2 MV/cm DC fields[J]. IEEE Transactions on Dielectrics Insulation, 1998, 5(1): 82-90.
[19] Kanno T, Uozumi T, Inoue Y. Measurement of space charge distribution in XLPE cable insulation at high temperature[C]. Conference Record of the 1998 IEEE International Symposium on Electrical Insulation. Arlinton, Virginia, USA, 1998: 85-88.
[20] 王新生, 屠德民, 刘国福, 等. 直流电场和热处理对XLPE电缆中空间电荷的影响[J]. 电线电缆, 1997(2): 2-8. Wang Xinsheng, Tu Demin, Liu Guofu, et al. Space charge in XLPE power cable under DC electrical stress and heat treatment[J]. Electric Wire & Cable, 1997(2): 2-8.
[21] Suh K S, Koo J H, Lee S H, et al. Origin of heterocharge in polyethylene[C]. Proceedings of the 4th International Conference on Properties and Applications of Dielectric Materials. Brisbane, Australia, 1994: 5-8.
[22] Wang X S, Huang Y Q, Tu D M. Trap density as an indication of electrical ageing degree in polymers[C]. Proceedings of the 4th International Conference on Properties and Applications of Dielectric Materials. Brisbane, Australia, 1994: 740-743.
[23] Li Y, Yasuda M, Takada T. Influence on spatial charge distribution of cross-linking agent residues in XLPE[C]. Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials. Waseda, Japan, 1991: 1210-1213．
[24] 廖瑞金, 李伟, 杨丽君, 等. 不同热老化程度油纸绝缘介质在直流电场中的空间电荷特性[J]. 高电压技术, 2011, 37(9): 2197-2203. Liao Ruijin, Li Wei, Yang Lijun, et al. Space charge properties under DC voltage of oil-paper insulation materials during thermal aging[J]. High Voltage Engineering, 2011, 37(9): 2197-2203.
[25] 李童. 温度可控的空间电荷测量装置的研制[D]. 北京：华北电力大学, 2009.